Korea Polymer Journal, Vol.3, No.2, 76-81, October, 1995
conversion of Poly(methyl methacrylate) to Polyglutarimide
Polyglutarimides (PGI) were obtained by reacting poly(methyl methacrylate)(PMMA) with various primary amines in an autoclave. The degree of imidiation, which was determined by 1H-NMR spectroscopy, ranged from 40 to 70% and the PMMA modified by methyl amine showed a nearly complete imidization. Glass transition temperatures of most PGI''s were much higher than that of PMMA. the glass transition temperature of PGI was increased as the alkyl group of the primary amine became shorter and bulkier. Also, thermogravimetric analyses indicated that the thermal stability of the modified PMMA was significantly improved as a result of the imidization except for PMMA modified by isopropyl amine, tert-butyl amine and benzyl amine.
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