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Synthesis of Amphiphilic Poly(alkyl methacrylate-b-methacrylic acid) by Group Transfer Polymerization and Selective Hydrolysis

  • Soon Ki Kwon (Department of Polymer Science and Engineering, Kyeongsang National University) ;
  • Weon Jung Choi (Department of Chemistry, Korea Advanced Institute of Science and Technology) ;
  • Yun Hi Kim (Department of Chemistry, Korea Advanced Institute of Science and Technology) ;
  • Sam Kwon Choi (Department of Chemistry, Korea Advanced Institute of Science and Technology)
  • Published : 1992.10.20

Abstract

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 $100^{\circ}C$ 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 $205-300^{\circ}C$.

Keywords

References

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