Effects of Monomer Unit Arrangement on the Properties of Copolymers
In recent years, an increasing awareness has arisen of the importance of structure as opposed to mere composition in determining the properties of copolymers (1–8). The physical properties of polymers are by far their most important attribute in regard to their practical utilization. An understanding of the relationship between the physical properties and molecular structure of polymers is essential to the polymer scientist who desires to synthesize new materials or to modify and process existing polymers. It is apparent that one can obtain unique properties in a polymeric material that can not be obtained in a homopolymer or a random copolymer by combining presently available monomers and polymers in unusual ways. There are at least four ways to formulate a polymeric material with new and useful properties (1) develop new monomers (2) develop new methods and techniques of polymerization (3) combine existing commercial monomers in such a way that the resulting material has certain superior properties and (4) combine existing polymers in an unusual way to achieve unique properties.
KeywordsBlock Copolymer Impact Strength Graft Copolymer Random Copolymer Copolymer Chain
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