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Titlebook: Heat-Resistant Polymers; Technologically Usef J. P. Critchley,G. J. Knight,W. W. Wright Book 1983 Springer Science+Business Media New York

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Polymers with Aromatic Rings in the Chain,it is arguably the simplest of the aromatic ring systems, its investigation has played an important part in the development of heat-resistant polymers. Commercial products based on polyphenylenes have appeared from time to time but have met with only limited success, due in the main to difficulties in fabrication.
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east for short time periods, at temperatures from 150°C. The greatest problem which arises in writing a monograph on such materials is the tremendous amount of data that is available. More than 2000 references have been published on one heat-resistant polymer system alone over a period of little mor
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le in “The Seven Vagabonds,” “The Canterbury Pilgrims,” “Ethan Brand” and “The Ambitious Guest” using Wendy Brown’s theorization of tolerance and Judith Shklar concept of citizenship to show that Hawthorne presented a view of citizenship and hospitality that differed from the same prevalent ideas of his age.
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Polymers with Heterocyclic Rings in the Chain,these materials involved introducing a degree of tractability into the system. In the case of highly conjugated aromatic polymers, as has already been seen, flexible (hinge) groups—linking the rings—led to increases in both molecular weight and tractability, but almost inevitably this was accompanied by a reduction in thermo-oxidative stability.
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