Thermogravimetric analysis of poly(alkyl methacrylates) and poly(methylmethacrylate‐g‐dimethyl siloxane) graft copolymers

S. D. Smith, T. E. Long, J. E. Mcgrath

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

The thermal stabilities of various poly(alkyl methacrylate) homopolymers and poly(methyl methacrylate‐g‐dimethyl siloxane) (PMMA‐g‐PSX) graft copolymers have been determined by thermogravimetric analysis (TGA). As expected, the thermal stabilities of poly(alkyl methacrylates) were a function of the ester alkyl group, and polymerization mechanism. In particular, thermally labile linkages, which result from termination during free radical or nonliving polymerization mechanisms, decrease the ultimate thermal stabilities of the polymers. However, graft copolymers, which were prepared by the macromonomer technique with free radical initiators, exhibited enhanced thermal stability compared to homopolymer controls. A more complex free radical polymerization mechanism for the macromonomer modified polymerization may account for this result. © 1994 John Wiley & Sons, Inc.

Original languageEnglish (US)
Pages (from-to)1747-1753
Number of pages7
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume32
Issue number9
DOIs
StatePublished - Jul 15 1994
Externally publishedYes

Keywords

  • graft copolymers
  • poly(alkyl methacrylates)
  • poly(methyl methacrylate)
  • polydimethylsiloxane
  • thermogravimetric analysis (TGA)

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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