Synthesis and characterization of poly(dimethyl siloxane) containing poly(vinyl pyrrolidinone) block copolymers


Uyanik N., Koker B., Yildiz Y.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.71, no.11, pp.1915-1922, 1999 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 71 Issue: 11
  • Publication Date: 1999
  • Title of Journal : JOURNAL OF APPLIED POLYMER SCIENCE
  • Page Numbers: pp.1915-1922

Abstract

ABA-type block copolymers containing segments of poly(dimethyl siloxane) and poly(vinyl pyrrolidinone) were synthesized. Dihydroxyl-terminated poly(dimethyl siloxane) was reacted with isophorone diisocyanate and then with t-butyl hydroperoxide to obtain macroinitiators having siloxane units. The peroxidic diradical macroinitiators were used to polymerize vinyl pyrrolidinone monomer to synthesize ABA-type block copolymers. By use of physicochemical methods, the structure was confirmed, and its characterization was accomplished. Mechanical and thermal characterizations of copolymers were made by stress-strain tests and differential scanning calorimetric measurements. (C) 1999 John Wiley & Sons, Inc.