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Synthetic polymers based on long chain molecules have been
investigated intensively for over 50 years. They have found
important applications as plastics, fibres, rubbers and other
materials. The chain molecules may be simple linear structures or
they may be branched or cross-linked. During the past decade, sharp
fractions of the first synthetic cyclic polymer have been prepared.
These fractions of cyclic poly(dimethyl siloxane) consist of ring
molecules containing hundreds of skeletal bonds. Some of their
properties have been found to be quite different from those of the
corresponding linear polymers. Synthetic cyclic polymers, including
cyclic polystyrene, have joined the naturally occurring circular
DNAs as examples of substantially large ring molecules. This book
aims to review current knowledge of cyclic polymers and biological
ring macromolecules. In addition, it discusses theories of cyclic
macromolecules and describes cyclization processes involving long
chain molecules. Since 1865, when Kekule proposed a simple ring
structure for benzene, larger and larger ring molecules have been
synthesized in the laboratory and discovered in nature. Many more
examples are to be expected in the future. In time, large ring
molecules should take their proper place alongside long chain
molecules as one of the two possible constituent structural units
of polymers."
Cyclic Polymers (Second Edition) reviews the many recent advances
in this rapidly expanding subject since the publication of the
first edition in 1986. The preparation, characterisation,
properties and applications of a wide range of organic and
inorganic cyclic oligomers and polymers are described in detail,
together with many examples of catenanes and rotaxanes. The
importance of large cyclics in biological chemistry and molecular
biology is emphasised by a wide coverage of circular DNA, cyclic
peptides and cyclic oligosaccharides and polysaccharides.
Experimental techniques and theoretical aspects of cyclic polymers
are included, as well as examples of their uses such as ring
opening polymerisation reactions to give commercially important
materials. This book covers a wide range of topics which should be
of interest to many scientific research workers (for example, in
polymer science, chemistry and molecular biology), as well as
providing a reference text for undergraduate and graduate students.
Cyclic Polymers (Second Edition) reviews the many recent advances
in this rapidly expanding subject since the publication of the
first edition in 1986. The preparation, characterisation,
properties and applications of a wide range of organic and
inorganic cyclic oligomers and polymers are described in detail,
together with many examples of catenanes and rotaxanes. The
importance of large cyclics in biological chemistry and molecular
biology is emphasised by a wide coverage of circular DNA, cyclic
peptides and cyclic oligosaccharides and polysaccharides.
Experimental techniques and theoretical aspects of cyclic polymers
are included, as well as examples of their uses such as ring
opening polymerisation reactions to give commercially important
materials. This book covers a wide range of topics which should be
of interest to many scientific research workers (for example, in
polymer science, chemistry and molecular biology), as well as
providing a reference text for undergraduate and graduate students.
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