NOVEL POLYURETHANE MULTIBLOCK COPOLYMERS AND THEIR ZWITTERIONOMERS USING A POLYURETHANE MACROINIFERTER

Authors
MAHESH GN THARANIKKARASU K RAMESH S RADHAKRISHNAN G
Citation
Gn. Mahesh et al., NOVEL POLYURETHANE MULTIBLOCK COPOLYMERS AND THEIR ZWITTERIONOMERS USING A POLYURETHANE MACROINIFERTER, Journal of macromolecular science. Pure and applied chemistry, A34(5), 1997, pp. 819-829
Citations number
52
Categorie Soggetti
Polymer Sciences
Journal title
Journal of macromolecular science. Pure and applied chemistry → ACNP
ISSN journal
10601325
Volume
A34
Issue
5
Year of publication
1997
Pages
819 - 829
Database
ISI
SICI code
1060-1325(1997)A34:5<819:NPMCAT>2.0.ZU;2-5
Abstract
Polyurethane-poly(4-vinylpyridine) multiblock copolymers have been pre pared by the decomposition of a tetraphenylethane-based polyurethane m acroiniferter in the presence of 4-vinylpyridine. The increase in the molecular weight and conversion with an increase in polymerization tim e proves the ''living'' radical mechanism. The polyurethanepoly(4-viny lpyridine) multiblock copolymers so obtained were converted into their zwitterionomers by treating with gamma-propane sultone. Both block co polymers and their zwitterionomers have been characterized using spect ral and thermal techniques.