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Books > Science & Mathematics > Chemistry > Organic chemistry > Polymer chemistry

Electroactive Polymer Electrochemistry - Part 2: Methods and Applications (Paperback, Softcover reprint of the original 1st ed.... Electroactive Polymer Electrochemistry - Part 2: Methods and Applications (Paperback, Softcover reprint of the original 1st ed. 1996)
Michael E.G. Lyons
R2,664 Discovery Miles 26 640 Ships in 18 - 22 working days

The development of "tailormade" electrode surfaces using electroactive polymer films has been one of the most active and exciting areas of electrochemistry over the last 15 years. The properties of these materials have been examined by a wide range of scientists from a variety of perspectives, and now electroactive polymer research is considered to be a reasonably mature area of research endeavor. Much is now understood about the fundamental mechanism of conduction in these materials. A wide range of electrochemical techniques may be used to probe the conductivity processes in these materials, and more recently, a number of in situ spectroscopic techniques have been used to further elucidate the structure of these materials. The in situ spectroscopies and allied techniques have also been used to obtain correlations between structure and redox activity. The applications found for electroactive polymers are many and varied, and range from thin film amperometric chemical and biological sensors, electrocatalytic systems, drug delivery devices, and advanced battery systems through to molecular electronic devices. The research literature on electroactive polymers is truly enormous and can daunt even the most hardened researcher. The vast quantity of material reported in the literature can also intimidate beginning graduate students. Hence the present book. The original idea for this book arose as a result of a series of lectures on chemically modified eiectrodes and electroactive polymers given by the writer to final-year undergraduates at Trinity College Dublin.

Surface Phenomena and Additives in Water-Based Coatings and Printing Technology (Paperback, Softcover reprint of the original... Surface Phenomena and Additives in Water-Based Coatings and Printing Technology (Paperback, Softcover reprint of the original 1st ed. 1991)
Mahendra K. Sharma
R4,019 Discovery Miles 40 190 Ships in 18 - 22 working days

Water-based technology has undergone revolutionary changes during the past two decades. Interest in the properties and uses of water-based coatings, paints and inks has continued to grow since the establishment of the Clean Air Act of 1970. The present book is devoted to recent developments and trends in water-based coating and ink technology. This volume is divided in three broad catagories: (1) Additives and Water-based Coating/Ink Systems, (2) Surface Modifications and Wettability, and (3) Ink/Coating Formulations and Their characterization. The role of various additives to improve the performance and properties of water-based coatings with special reference to surface phenomena such as wettability, adhesion, surface energies, dispersion stability, particle size and size distribution are presented in these sections. This volume documents the proceedings of the International symposium on Surface Phenomena and Additives in Water-Based Coatings and Printing Technology sponsored by the 21st Annual Meeting of the Fine Particle Society (FPS). This meeting was held in San Diego, california, AUgust 21-25, 1990. The symposium upon which this volume is based was organized in four sessions emphasizing several basic and applied aspects of water-based coatings and printing technology. Major topics discussed include advances in water-based technology, water-based flexo and gravure inks, hydrophobically-modified cellulosic thickeners, organosilicones, uv curable silicone release coatings, surface characterization of Ti02 pigments, polymer substrates, flexographic plates and coating films, pigment wetting and dispersing agents, hydrotrope effect in emulsion polymers, film thickness control, particle size measurements, rheological properties, and statistically designed mixtures for ink formulations.

Transitions in Oligomer and Polymer Systems (Paperback, Softcover reprint of the original 1st ed. 1994): Hans-Georg Kilian,... Transitions in Oligomer and Polymer Systems (Paperback, Softcover reprint of the original 1st ed. 1994)
Hans-Georg Kilian, Martin Pietralla
R1,367 Discovery Miles 13 670 Ships in 18 - 22 working days

This volume contains the proceedings of the 28th Europhysics Conference on Macromolecular Physics held in Ulm, Germany, in September 1993. The topic covers a broad scope within the field of polymer science. In its early days, interest was focused on the nature of the melt and of the glass transition. The latter phenomen underwent a pronounced renewal with the advent of the mode coupling theory, and polymers constitute only one class of substances within this context. Consequently, this volume considers the glass transition from different points of view. It is the aim of this publication to demonstrate the state of the art of this evolution by a balanced presentation of the subject that considers experimental work, theory, and computer stimulation techniques.

Ultracentrifugation (Paperback, Softcover reprint of the original 1st ed. 1994): M.D. Lechner Ultracentrifugation (Paperback, Softcover reprint of the original 1st ed. 1994)
M.D. Lechner
R1,387 Discovery Miles 13 870 Ships in 18 - 22 working days

Ultracentrifugation contains the proceedings of the VIII. same-named symposium held in 1993, at Osnabruck, FRG. The volume presents the current concepts in analytical ultracentrifugation (AUC) including: . biochemical and biophysical applications . characterization of polyelectrolytes, synthetic polymers, gels and lattices . modern, fully computerized analytical ultracentrifuge Optima XL-A . future technical developments."

Ceramic Matrix Composites - Second Edition (Paperback, 2nd ed. 2003): Krishan K. Chawla Ceramic Matrix Composites - Second Edition (Paperback, 2nd ed. 2003)
Krishan K. Chawla
R5,619 Discovery Miles 56 190 Ships in 18 - 22 working days

After an introductory chapter, the processing, microstructure, and properties of various ceramic materials, reinforcements, and their composites are described. A separate chapter is devoted to processing of ceramic reinforcements, with a special emphasis on fibers. Processing of ceramic matrix composites is the next chapter, which includes novel techniques such as sol-gel processing and ceramics from polymeric precursors. The next four chapters cover the subjects of interface region in ceramic composites, mechanical and physical properties, and the role of thermal stresses and the important subject of toughness enhancement. Laminated composites made of ceramics are described in a separate chapter. Finally, a chapter is devoted to various applications of ceramic matrix composites. Throughout the text, the underlying relationships between the components of the triad: processing, microstructure, and properties are brought out. An exhaustive list of references and suggested reading is provided.

Commercial Polymer Blends (Paperback, Softcover reprint of the original 1st ed. 1998): L.A. Utracki Commercial Polymer Blends (Paperback, Softcover reprint of the original 1st ed. 1998)
L.A. Utracki
R10,206 Discovery Miles 102 060 Ships in 18 - 22 working days

3 In 1992 the annual world production of plastics reached 102 x 1()6m at a value of 3 over US$300 billion, while that of steel was 50 x1()6m ata value ofUS$l25 billion (Table 1. 1). Furthermore, from 1980 to 1990, plastics production increased by 62%, while thatofsteeldecreasedby 21%. Considering theunevenpolymerconsumption around theworld,polymerproductionwillhave toincreasebya factor often before currently recorded levels ofplastics sales in developed countries willbe universally reached. Polymers are the fastest growing structural materials. In addition, the polymer blend segment of the plastics industry increases at a rate about three times higher than thewhole. The aim of thisbook is to trace the historicalevolution of the polymer blends industry. Table 1. 1 World production of steel and plastics for 1992 Production Steel Plastics 410 102* Production volume (Mt/year) 3 Production volume (M(m )/year) 51 102 Production value (billion US$/year) 125 310 Growth from 1980to 1990 (%) -21 -1;62 ,. 121 Mt/year in 1996 A polymer (from the Greek poly = manyand meros = units) is a substancecomposed ofmacromoleculesbuiltby covalentlyjoiningatleast50 molecular segments, called mel'S. The word polymer was introduced in 1832 by Jons Jacob Berzelius for sub- stances thatmayhaveidenticalchemicalcompositionbutdifferinmolecularweight (e. g. , acetylene, benzene and styrene, having the formula CnH with n == 2,6and 8, n respectively). During the years 1859-1863, Louren~o reported that condensation of ethylene glycol with ethylene dibromide resulted in a mixture of ethers, whose members, separated by distillation, were identified as HD-(C2l4D-)n-H with n == 2 to 6 (Stahl, 1981).

Deformation and Fracture of High Polymers (Paperback, Softcover reprint of the original 1st ed. 1973): H. Kausch Deformation and Fracture of High Polymers (Paperback, Softcover reprint of the original 1st ed. 1973)
H. Kausch
R2,800 Discovery Miles 28 000 Ships in 18 - 22 working days
Alternating Copolymers (Paperback, Softcover reprint of the original 1st ed. 1985): J.M.G. Cowie Alternating Copolymers (Paperback, Softcover reprint of the original 1st ed. 1985)
J.M.G. Cowie
R4,008 Discovery Miles 40 080 Ships in 18 - 22 working days

Examination of the early literature attests to the fact that the study of copolymerization was initiated when polymer science was in its infancy. It has continued to grow to a subject of major importance and has been a source of interest to both academic and industrialist alike. The wide spectrum of structures and properties available in the statistical copolymer has made this a fruitful field of exploration, but one particular and more restricted form which has held its own fascination for many is the limiting case of the strictly alternating copolymer. This is formed, in the ideal situation, when two monomers in a reaction mixture add consecutively to create a polymer chain with a regular {ABABAB} structure, irrespective of the monomer feed ratio. When this happens the resulting copolymer will always have the same composition, a feature which can be advantageous but also somewhat restrictive, as the ability to vary the properties is then limited. Within a series entitled Speciality Polymers it seems appropriate then to deal with this subject, particularly as no previous attempt has been made to draw together the various facets of alternating copolymerization into one volume. It also seems timely to present a more unified picture of the subject which will also illustrate the progress made.

Fluoropolymers 2 - Properties (Paperback, Softcover reprint of the original 1st ed. 2002): Gareth G. Hougham, Patrick E... Fluoropolymers 2 - Properties (Paperback, Softcover reprint of the original 1st ed. 2002)
Gareth G. Hougham, Patrick E Cassidy, Ken Johns, Theodore Davidson
R6,539 Discovery Miles 65 390 Ships in 18 - 22 working days

The fluorine atom, by virtue of its electronegativity, size, and bond strength with carbon, can be used to create compounds with remarkable properties. Small molecules containing fluorine have many positive impacts on everyday life of which blood substitutes, pharmaceuticals, and surface modifiers are only a few examples. Fluoropolymers, too, while traditionally associated with extreme high performance applications have found their way into our homes, our clothing, and even our language. A recent American president was often likened to the tribology of PTFE. Since the serendipitous discovery of Teflon at the DuPont Jackson Laboratory in 1938, fluoropolymers have grown steadily in technological and marketplace importance. New synthetic fluorine chemistry, new processes, and new apprecia tion of the mechanisms by which fluorine imparts exceptional properties all contribute to accelerating growth in fluoropolymers. There are many stories of harrowing close calls in the fluorine chemistry lab, especially from the early years, and synthetic challenges at times remain daunting. But, fortunately, modem techniques and facilities have enabled significant strides toward taming both the hazards and synthetic uncertainties, In contrast to past environmental problems associated with fluorocarbon refrigerants, the exceptional properties of fluorine in polymers have great environmental value. Some fluoropolymers are enabling green technologies such as hydrogen fuel cells for automobiles and oxygen selective membranes for cleaner diesel combustion.

Organofluorine Chemistry - Principles and Commercial Applications (Paperback, Softcover reprint of the original 1st ed. 1994):... Organofluorine Chemistry - Principles and Commercial Applications (Paperback, Softcover reprint of the original 1st ed. 1994)
R.E. Banks, B.E. Smart, J.C. Tatlow
R7,735 Discovery Miles 77 350 Ships in 18 - 22 working days

During the past fifteen years commercial interest in compounds containing carbon fluorine bonds has burgeoned beyond all expectations, mainly owing to business opportunities arising from work on biologically active fluoroorganics-particularly agrochemicals, the relentless search for new markets for fluoropolymers and fluoro carbon fluids, developments in the field of medical diagnostics, and the drive to find replacements for ozone-depleting CFCs and Halon fire-extinguishing agents. Judging the situation to warrant the publication of a comprehensive collection of up-to-date reviews dealing with commercial organofluorine compounds within a single volume of manageable size (and hence reasonable cost), we were delighted to be invited by Plenum Publishing Corporation to produce a suitable book. In order to provide an authentic and wide-ranging account of current commercial applications of fluoroorganic materials, it clearly was necessary to assemble a sizeable team of knowledgeable contributing authors selected almost entirely from industry. Through their efforts we have been able to produce an almost complete coverage of the modem organofluorochemicals business in a manner designed to attract a reader ship ranging from experts in the field, through chemists and technologists currently unaware of the extent of industrial involvement with fluoroorganics, to students of applied chemistry. Promised chapters dedicated to perfluoroolefin oxides and 18F labeling of radiopharmaceuticals failed to materialize. This is somewhat unfortunate in view of our aim to achieve comprehensive coverage of the subject.

Inorganic and Organometallic Macromolecules - Design and Applications (Paperback, 2008 ed.): Alaa S Abd-El-Aziz, Charles E.... Inorganic and Organometallic Macromolecules - Design and Applications (Paperback, 2008 ed.)
Alaa S Abd-El-Aziz, Charles E. Carraher, Charles U. Pittman, Martel Zeldin
R2,705 Discovery Miles 27 050 Ships in 18 - 22 working days

This important work is based on the editors' symposium at the 2005 ACS meeting in Washington, DC. The contents include an emphasis on main-group polymers, including boron. The chapters are not simply journal articles, but have real added value as the editors have reviewed the general area by placing the work into a larger perspective. This book will be required reading for scientists in a number of disciplines including chemical engineers and physics researchers.

Spectroscopy: NMR, Fluorescence, FT-IR (Paperback, Softcover reprint of the original 1st ed. 1984): C. W. Frank, J. L. Koenig,... Spectroscopy: NMR, Fluorescence, FT-IR (Paperback, Softcover reprint of the original 1st ed. 1984)
C. W. Frank, J. L. Koenig, E. D. V. Meerwall, S N Semerak
R2,629 Discovery Miles 26 290 Ships in 18 - 22 working days
Manual of Plastics Analysis (Paperback, Softcover reprint of the original 1st ed. 1998): T. R Crompton Manual of Plastics Analysis (Paperback, Softcover reprint of the original 1st ed. 1998)
T. R Crompton
R5,206 Discovery Miles 52 060 Ships in 18 - 22 working days

Reviewing over 100 chemical and physical methods for analysis of polymers, Manual of Plastics Analysis is so detailed and comprehensive that chemists can apply the methods - many previously unpublished - directly from the book. A genuine laboratory manual, the volume supplies prodigious amounts of up-to-date information on all types of polymers, polymer additives, volatiles, adventitious impurities, monomers, metals, and pigments. Extremely well-suited for classroom teaching, research, or industrial applications, the book contains numerous tables and figures, as well as many chemical equations illustrating its analytical techniques.

Water-Soluble Polymers - Proceedings of a Symposium held by the American Chemical Society, Division of Organic Coatings and... Water-Soluble Polymers - Proceedings of a Symposium held by the American Chemical Society, Division of Organic Coatings and Plastics Chemistry, in New York City on August 30-31, 1972 (Paperback, Softcover reprint of the original 1st ed. 1973)
N. Bikales
R2,727 Discovery Miles 27 270 Ships in 18 - 22 working days

Water-soluble polymers have been attracting increasing atten tion because of their utility in industrial applications of great current concern. Perhaps preeminent among these is their ability to flocculate suspended solids, e.g., wastes in municipal sew age-treatment plants or pulp in papermaking. other important appli cations are to aid in so-called secondary recovery of petroleum, to reduce turbulent friction of water, and as components of water-based finishes developed in response to environmental con straints. Some water-soluble polymers have shown interesting bio logic activity, which is being investigated further. This book is based on papers presented at a symposium held by the American Chemical Society, Division of Organic Coatings and Plastics Chemistry, in New York City on 30-31 August 1972. The large attendance and the favorable response of the audience con firmed not only our view of the importance of the field but also the need to bring these topics together. The chapters in this book are generally enlarged and more detailed, with more complete bibliographies, than the papers presented at the Symposium. They include not only the important applications described above, but also descriptions of new syntheses and characterization methods."

Crystal Chemistry of Condensed Phosphates (Paperback, Softcover reprint of the original 1st ed. 1995): A. Durif Crystal Chemistry of Condensed Phosphates (Paperback, Softcover reprint of the original 1st ed. 1995)
A. Durif
R5,853 Discovery Miles 58 530 Ships in 18 - 22 working days

In this reference, the author thoroughly reviews the current state of condensed phosphate chemistry. A unique feature of this volume is an examination of the recent developments in X-ray structural techniques, reporting on fundamental results obtained through their use. Enhanced by comprehensive tables reporting crystal data, chapters identify and characterize more than 2,000 compounds. Additional features include a concise survey of the historical development of condensed phosphate chemistry; the presently accepted classification system; a review of each family of condensed phosphates and much more.

Unusual Properties of New Polymers (Paperback, Softcover reprint of the original 1st ed. 1983): Akihiro Abe, Ann-Christine... Unusual Properties of New Polymers (Paperback, Softcover reprint of the original 1st ed. 1983)
Akihiro Abe, Ann-Christine Albertsson, Karel Du sek, Jan Genzer, Shiro Kobayashi, …
R1,378 Discovery Miles 13 780 Ships in 18 - 22 working days
Adhesive Bonding (Paperback, Softcover reprint of the original 1st ed. 1991): L. H. Lee Adhesive Bonding (Paperback, Softcover reprint of the original 1st ed. 1991)
L. H. Lee
R5,232 Discovery Miles 52 320 Ships in 18 - 22 working days

For several years, I have been responsible for organizing and teaching in the fall a short course on "Fundamentals of Adhesion: Theory, Practice, and Applications" at the State University of New York at New Paltz. Every spring I would try to assemble the most pertinent subjects and line up several capable lecturers for the course. However, there has always been one thing missing-an authoritative book that covers most aspects of adhesion and adhesive bonding. Such a book would be used by the participants as a main reference throughout the course and kept as a sourcebook after the course had been completed. On the other hand, this book could not be one of those "All you want to know about" volumes, simply because adhesion is an interdisciplinary and ever-growing field. For the same reason, it would be very difficult for a single individual, especially me, to undertake the task of writing such a book. Thus, I relied on the principle that one leaves the truly monumental jobs to experts, and I finally succeeded in asking several leading scientists in the field of adhesion to write separate chapters for this collection. Some chapters emphasize theoretical concepts and others experimental techniques. In the humble beginning, we planned to include only twelve chapters. However, we soon realized that such a plan would leave too much ground uncovered, and we resolved to increase the coverage. After the book had evolved into thirty chapters, we started to feel that perhaps our mission had been accomplished.

Permeability of Plastic Films and Coatings - To Gases, Vapors, and Liquids (Paperback, Softcover reprint of the original 1st... Permeability of Plastic Films and Coatings - To Gases, Vapors, and Liquids (Paperback, Softcover reprint of the original 1st ed. 1974)
Harold Hopfenberg
R1,496 Discovery Miles 14 960 Ships in 18 - 22 working days
Dynamics of Soft Matter - Neutron Applications (Paperback, 2012 ed.): Victoria Garcia Sakai, Christiane Alba-Simionesco,... Dynamics of Soft Matter - Neutron Applications (Paperback, 2012 ed.)
Victoria Garcia Sakai, Christiane Alba-Simionesco, Sow-Hsin Chen
R5,189 Discovery Miles 51 890 Ships in 18 - 22 working days

Dynamics of Soft Matter: Neutron Applications provides an overview of neutron scattering techniques that measure temporal and spatial correlations simultaneously, at the microscopic and/or mesoscopic scale. These techniques offer answers to new questions arising at the interface of physics, chemistry, and biology. Knowledge of the dynamics at these levels is crucial to understanding the soft matter field, which includes colloids, polymers, membranes, biological macromolecules, foams, emulsions towards biological & biomimetic systems, and phenomena involving wetting, friction, adhesion, or microfluidics. Emphasizing the complementarities of scattering techniques with other spectroscopic ones, this volume also highlights the potential gain in combining techniques such as rheology, NMR, light scattering, dielectric spectroscopy, as well as synchrotron radiation experiments. Key areas covered include polymer science, biological materials, complex fluids and surface science.

Metallized Plastics 1 - Fundamental and Applied Aspects (Paperback, Softcover reprint of the original 1st ed. 1989): K.L.... Metallized Plastics 1 - Fundamental and Applied Aspects (Paperback, Softcover reprint of the original 1st ed. 1989)
K.L. Mittal, J. R. Susko
R2,653 Discovery Miles 26 530 Ships in 18 - 22 working days

This volume chronicles the proceedings of the Symposium on Metallized Plastics: Fundamental and Applied Aspects held under the auspices of the Dielectrics and Insulation Division of the Electrochemical Society in Chicago, October 10-12, 1988. This was the premier symposium on this topic and if the comments from the attendees are any barometer of the success of a symposium then it was a grand success. Concomitantly, it has been decided to hold it on a regular basis (at intervals of 18 months) and the second event in this series is planned as a part of the Electrochemical Society meeting in Montreal, Canada, May 6-10, 1990. Metallized plastics find a legion of applications ranging from mundane to very sophisticated. A complete catalog of the various technological applications of metallized plastics will be prohibitively long, so here some eclectic examples should suffice to show why there is such high tempo of R&D activity in the arena of metallized plastics, and all signals indicate that this high tempo will continue unabated. For example, polymeric films are metallized for packaging (food and other products) purposes, and the applications of metallized plastics in the automotive industry are quite obvious. In the field of microelectronics and computer technology, insulators are metallized for interconnection and other functional purposes. Also plastics are metallized to provide electromagnetic shielding.

Mineral Scale Formation and Inhibition (Paperback, Softcover reprint of the original 1st ed. 1995): Z. Amjad Mineral Scale Formation and Inhibition (Paperback, Softcover reprint of the original 1st ed. 1995)
Z. Amjad
R5,189 Discovery Miles 51 890 Ships in 18 - 22 working days

This book documents the proceedings of the symposium, "Mineral Scale Formation and Inhibition," held at the American Chemical Society Annual Meeting August 21 to 26, 1994, in Washington, D. C. The symposium, sponsored by the Division of Colloid and Surface Chemistry, was held in honor of Professor George H. Nancollas for his pioneering work in the field of crystal growth from solution. A total of 30 papers were presented by a wide spectrum of scientists. This book also includes papers that were not presented but were in the symposium program. The separation of a solid by crystallization is one of the oldest and perhaps the most frequently used operations in chemistry. Because of its widespread applicability, in recent years there has been considerable interest exhibited by academic and industrial scientists in understanding the mechanisms of crystallization of sparingly soluble salts. The salt systems of great interest in industrial water treatment area (i. e., cooling and boiler) include carbon ates, sulfates, phosphates, and phosphonates of alkaline earth metals. Although not as common as calcium carbonate and calcium sulfate, barium and strontium sulfates have long plagued oil field and gas production operations. The build-up of these sparingly soluble salts on equipment surfaces results in lower heat transfer efficiency, increased corrosion rates, increased pumping costs, etc. In the laundry application, insoluble calcium carbonate tends to accumulate on washed fabrics and washing equipment parts, resulting in undesirable fabric-encrustation or scaling."

Mass Spectrometry of Polymers - New Techniques (Paperback, 2012 ed.): Minna Hakkarainen Mass Spectrometry of Polymers - New Techniques (Paperback, 2012 ed.)
Minna Hakkarainen
R5,143 Discovery Miles 51 430 Ships in 18 - 22 working days

Emerging Mass Spectrometric Tools for Analysis of Polymers and Polymer Additives, by Nina Aminlashgari and Minna Hakkarainen. Analysis of Polymer Additives and Impurities by Liquid Chromatography/Mass Spectrometry and Capillary Electrophoresis/Mass Spectrometry, by Wolfgang Buchberger and Martin Stiftinger. Direct Insertion Probe Mass Spectrometry of Polymers, by Jale Hacaloglu Mass Spectrometric Characterization of Oligo- and Polysaccharides and Their Derivatives, by Petra Mischnick. Electrospray Ionization-Mass Spectrometry for Molecular Level Understanding of Polymer Degradation, by Minna Hakkarainen.

Advances in Polymer Friction and Wear (Paperback, Softcover reprint of the original 1st ed. 1974): Lieng-Huang Lee Advances in Polymer Friction and Wear (Paperback, Softcover reprint of the original 1st ed. 1974)
Lieng-Huang Lee
R2,730 Discovery Miles 27 300 Ships in 18 - 22 working days

Polymers and polymer composites have been increasingly used in place of metals for various industries; namely, aerospace, automotive, bio-medical, computer, electronhotograohy, fiber, and rubber tire. Thus, an understanding of the interactions between polymers and between a polymer and a rigid counterface can enhance the anplications of polymers under various environments. In meet ing this need, polymer tribology has evolved to deal with friction, lubrication and wear of polymeric materials ann to anSwer some of the problems related to polymer-polymer interactions or nolymer rigid body interactions. The purpose of this first International Symposium was to introduce advances in studies of polymer friction and wear, especially in Britain and the U. S. S. R. Most earlier studies of the Fifties were stimulated by the growth of rubber tire industries. Continuous research through the Sixties has broadened the base to include other polymers such as nylon, polyolefins, and poly tetra fluoroethylene, or PTFE. However, much of this work was published in engineering or physics journals and rarely in chemistry journals: presumably, the latter have always considered the work to be too applied or too irrelevant."

BIOACTIVE ANALYTES, Including CNS Drugs, Peptides, and Enantiomers (Paperback, Softcover reprint of the original 1st ed. 1986):... BIOACTIVE ANALYTES, Including CNS Drugs, Peptides, and Enantiomers (Paperback, Softcover reprint of the original 1st ed. 1986)
E. Reid, Bryan Scales, I.D. Wilson
R1,476 Discovery Miles 14 760 Ships in 18 - 22 working days
Handbook of Thermoplastics Injection Mould Design (Paperback, Softcover reprint of the original 1st ed. 1993): P.S. Cracknell,... Handbook of Thermoplastics Injection Mould Design (Paperback, Softcover reprint of the original 1st ed. 1993)
P.S. Cracknell, R.W. Dyson
R1,368 Discovery Miles 13 680 Ships in 18 - 22 working days

Injection moulding is one of the most important methods of manufacturing plastics products. Through the development of sophisticated micro processor control systems, the modern injection moulding machine is capable of producing precision mouldings with close tolerances in large numbers and with excellent reproducibility. This capability, however, is often limited by the lack of a proper appreciation of mould design. The mould, or tool as it is often called, is at the heart of the injection moulding process. Its basic function is to accept the plastic melt from the injection unit and cool it to the desired shape prior to ejection. It is not, however, simply a matter of the mould having an impression of the shape to be moulded. Many other factors have to be taken into account - for example, the ability to fill the mould impression properly and efficiently without inducing weaknesses in the moulding and the efficient cooling of the moulding in order to maximise production rates without diminishing the quality of the moulding. In addition, the type of mould, gate and runner system, and ejection system which will best meet the needs of a particular job specification have to be determined. In our experience lack of attention to such factors leads to the mould limiting the ability of the injection moulding machine and preventing the process as a whole from achieving its true potential.

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