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Cellulose Acetate - Properties, Uses and Preparation (Hardcover): Calvin Roberson Cellulose Acetate - Properties, Uses and Preparation (Hardcover)
Calvin Roberson
R5,281 R4,817 Discovery Miles 48 170 Save R464 (9%) Ships in 12 - 17 working days

Cellulose Acetate: Properties, Uses and Preparation presents data on thermodynamic characteristics (heat capacity, enthalpy, entropy, and Gibbs function) from 4 to 580 K cellulose acetates and cellulose nitrates, as well as the major plasticizers for these polymers, the temperatures of their relaxation and phase transitions, the effect of plasticizers on these characteristics of cellulose acetate and cellulose nitrate and the solubility of plasticizers in polymers. Cellulose diacetate has been used in the design of sorption matrices for the fluorescent analysis of polyaromatic and heterocyclic compounds. Thus, the physicochemical properties of cellulose diacetate solutions in a binary acetone-water solvent were analyzed along with the morphological, surface-energy, physicochemical and physicomechanical characteristics of film matrices in comparison with fiber ones. Additionally, the authors examine how the growth of CO2 emissions efforts led to the necessity for green material solutions that fit into a sustainable development policy and low environmental impact. The major barriers to produce cellulose-based products from agricultural residues are the heterogeneity of the raw material, the experimental conditions reproducibility, the heterogeneous phase of the synthesis reaction, the difficulty of purification, the effluent disposal, and the control of the product quality. In the closing study, the authors provide a comprehensive review of electrospun nanofibres from different types of polymers with synthesized montmorillonite clays. Loading activated natural bentonite clay into any type of polymer can improve the adsorption property of electrospun nanofibres, but the bentonite clay must be well dispersed, suspended and loaded to achieve any benefit. This study may pave the way for further use of electrospun nanofibres loaded with clay in a wide variety of environmental and medical applications.

Marriage Ain't for Punks - A No-Nonsense Guide to Building a Lasting Relationship (Paperback): Calvin Roberson Marriage Ain't for Punks - A No-Nonsense Guide to Building a Lasting Relationship (Paperback)
Calvin Roberson
R493 R444 Discovery Miles 4 440 Save R49 (10%) Ships in 10 - 15 working days

Beloved marriage counsellor Pastor Cal Roberson captivates millions of viewers with his eccentric personality and unabashed yet effective marriage advice-and Marriage Ain't for Punks is no different. This book is a relationship game changer. It's a straightforward and unapologetic dive into why people fail or struggle at one of the most popular and sought-after unions in society. Even though some marriages look like a hot mess, don't give up hope, because it is transparency, honesty, and downright fearlessness that make a great marriage. A good relationship is about refusing to allow pettiness to destroy the loving connection that partners truly seek to find with each other. Those with healthy marriages are not weaklings. They are not quitters. They know that Marriage Ain't for Punks!

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