Beta-Cyclodextrin Mediated Synthesis of Sterically Controlled Styrene-acrylonitrile Copolymer

Palaniswami, Ravi and Soundar, Divakar (2000) Beta-Cyclodextrin Mediated Synthesis of Sterically Controlled Styrene-acrylonitrile Copolymer. Journal of Inclusion Phenomena and Macrocyclic Chemistry, 38. pp. 323-336.

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Abstract

Sterically controlled styrene-acrylonitrile (SAN) copolymers were prepared by inclusion polymerization using molar equivalents of -cyclodextrin (-CD) and its derivative. Comonomer compositions, reactivity ratios, monomer sequence and average styrene and acrylonitrile sequence lengths were determined using 13C NMR spectroscopy. The molecular weight of the polymers prepared increased with decreasing -CD concentration, but was found to be less than the control. With increase in the styrene: -CD ratios the average acrylonitrile sequence length and run number of the polymers increased. The glass transition temperature (Tg) also increased along with the melting temperature (Tm) of the polymers at higher styrene:-CD ratios.

Item Type:	Article
Uncontrolled Keywords:	Beta-cyclodextrin, styrene-acrylonitrile, copolymer, monomer sequence, comonomer composition
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:	01 Jul 2009 04:38
Last Modified:	01 Jul 2009 04:38
URI:	http://ir.cftri.res.in/id/eprint/9136

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