Supercritical Carbon Dioxide Swelling of Polyheteroarylenes Synthesized in N-Methylpyrrolidinone
Affiliation:
1 A.N. Nesmeyanov Institute of Organoelement Compounds,
28 Vavilova str., 119991 Moscow, Russia; ron@ineos.ac.ru
2 “Petru Poni” Institute of Macromolecular Chemistry, 41 Aleea G.Chica Voda, Iasi, Romania
DOI:
https://doi.org/10.23939/chcht05.01.025
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Keywords:
Abstract:
Five series of polyheteroarylenes have been investigated with regard to their physical properties before and after swelling with a supercritical carbon dioxide. The study of the dependence of the glass transition temperature and the free volume of polymers on their conformational rigidity showed that the process of swelling in the supercritical carbon dioxide is influenced by the voluminous side groups and by the high boiling solvent N-methylpyrrolidinone used for preparation of the polymers which facilitates the formation of crosslinks or complexes with the macromolecular chains.
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