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Temperature-responsive polymer microspheres prepared with a macroinitiator

✍ Scribed by Hiromi Kitano; Junko Kawabata

Book ID
102482781
Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
417 KB
Volume
197
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

A macroinitiator was prepared by coupling of the disuccinimidyl ester of 4,4′‐azobis(cyanovaleric acid) with poly(N‐isopropylacrylamide) (PIPA) with terminal amino group. Styrene and divinylbenzene were copolymerized with the initiator in the presence of sodium dodecylsulfate. The polymer microspheres obtained have PIPA chains on their surfaces, and the stability of a suspension of the microspheres in the presence of electrolyte is largely influenced by the temperature, whereas that of microspheres without PIPA chains is not. The usefulness of macroinitiators to prepare various polymer materials which are responsive to external stimuli was strongly emphasized.

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