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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 13, Number 5
BKCSDE 13(5)
May 20, 1992 

Synthesis of Amphiphilic Poly(alkyl methacrylate-b-methacrylic acid) by Group Transfer Polymerization and Selective Hydrolysis
Soon-Ki Kwon*, Weon-Jung Choi, Yun-Hi Kim, Sam-Kwon Choi
Several poly(alkyl methacrylate-b-t-butyl methacrylate) diblock copolymers were synthesized by group transfer polymerization. The molecular weight of poly(t-butyl methacrylate) segments and the composition of the resulting block copolymers were controlled by the monomer feed ratios and mole ratios of monomer to initiator. The poly(t-butyl methacrylate) block was quantitatively hydrolyzed to poly(methacrylic acid) block by refluxing with a catalytic amount of p-toluenesulfonic acid in dioxane at 100℃ for 12 hrs. The thermogravimetric analysis of poly(alkyl methacrylate-b-t-butyl methacrylate) exhibited the lose of isobutylene and subsequent anhydride formation in the range of 205-310℃.
479 - 482
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