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Molecular weight distribution of polyacrylonitrile produced in supercritical CO2

โœ Scribed by Xin-rong Teng; Hui-li Shao; Xue-chao Hu

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
105 KB
Volume
86
Category
Article
ISSN
0021-8995

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โœฆ Synopsis

Abstract

An effectively linear molecular weight calibration curve of polyacrylonitrile (PAN) was obtained using a copolymer standard with a single broad molecular weight distribution. The molecular weights and molecular weight distributions of PAN obtained from precipitation polymerization of acrylonitrile in supercritical CO~2~ were quantitated by the calibration curve. The effects of monomer concentration, initiator concentration, the CO~2~ pressure, and the total reaction time on the molecular weight and molecular weight distribution were studied in detail. ยฉ 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 2338โ€“2341, 2002

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