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High Performance Polymers
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Study of the Behavior of Some Polyheteroarylenes Treated with Supercritical Carbon Dioxide

Inga A. Ronova

Nesmeyanov Institute of Organoelement Compounds, Vavilova 28, Moscow - 119991, Russia

Lev N. Nikitin

Nesmeyanov Institute of Organoelement Compounds, Vavilova 28, Moscow - 119991, Russia

Ekaterina A. Sokolova

Nesmeyanov Institute of Organoelement Compounds, Vavilova 28, Moscow - 119991, Russia

Ion Sava

"Petru Poni" Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41 A, Iasi - 700487, Romania

Maria Bruma

"Petru Poni" Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41 A, Iasi - 700487, Romania, mbruma{at}icmpp.ro

Various polyheteroarylenes have been studied with regard to their physical properties before and after treatment with supercritical carbon dioxide (sc-CO 2). Thus, the study of dependence of glass transition temperature and free volume of polymer matrix on the conformational rigidity showed that the process of swelling in sc-CO2 is influenced by the residual solvent and by the formation of possible hydrogen bonds between CO2 and amide groups in the polymer chain.

Key Words: Supercritical carbon dioxide • polyheteroarylenes • conformational rigidity • free volume • glass transition temperature • hydrogen bonds

This version was published on October 1, 2009

High Performance Polymers, Vol. 21, No. 5, 562-578 (2009)
DOI: 10.1177/0954008309339331
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