Beta-Cyclodextrin Regulated Stereoregularity and Molecular Weight in Inclusion Polymerization of Acrylonitrile

Ravi, P. and Divakar, S. (1999) Beta-Cyclodextrin Regulated Stereoregularity and Molecular Weight in Inclusion Polymerization of Acrylonitrile. Journal of Macromolecular Science: Pure Applied Chemistry, A36 (12). pp. 1935-1948.

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Abstract

Polyacrylonitrile (PAN) polymers were prepared by inclusion polymerization of the monomer using various molar equivalents of b-cyclodextrin (b-CD). Stereoregular (isotactic, atactic and syndiotactic) distributions of the prepared PAN polymers were determined from terminal model Bernoullian statistics using 13CNMR data. With an increase in acrylonitrile (AN): b-CD ratios, the proportion of isotactic polymers increased. Also, Tg increased along with degradation temperature at higher AN: b-CD ratios. However, molecular weight of the polymers prepared was lower at an AN: b-CD ratio of 10:1, but was found to be larger than the control at an AN: b-CD ratio of 20:1.

Item Type:	Article
Uncontrolled Keywords:	Inclusion Polymerization, Tacticity Distribution, Bernoullian Statistics, Isotactic Polymers, 13C NMR
Subjects:	500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 27 Polymer Chemistry
Divisions:	Fermentation Technology and Bioengineering Food Packaging Technology
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	06 Jun 2011 11:06
Last Modified:	30 Apr 2012 06:48
URI:	http://ir.cftri.res.in/id/eprint/10071

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