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Journal of Thermal Analysis and Calorimetry

, Volume 83, Issue 1, pp 83–86 | Cite as

Thermal degradation of vinylidene chloride/vinyl chloride copolymers in the presence of N-substituted maleimides

  • Howell B A 
  • Zhang J 
Article

Abstract

As a consequence of their excellent barrier properties vinyl chloride/vinylidene chloride copolymers have long been prominent in the flexible packaging market. While these polymers possess a number of superior characteristics, they tend to undergo thermally- induced degradative dehydrochlorination at process temperatures. This degradation must be controlled to permit processing of the polymers. Three series of N-substituted maleimides (N-alkyl-, N-aralkyl, and N-aryl) have been synthesized, characterized spectroscopically, and evaluated as potential stabilizers for a standard vinyl chloride/vinylidene chloride (85 mass%) copolymer. As surface blends with the polymer, these compounds are ineffective as stabilizers. However, significant stabilization may be achieved by pretreatment of the polymer with N-substituted maleimides. The most effective stabilization of the polymer is afforded by N-aralkyl- or N-arylmaleimides, most notably, N-benzylmaleimide and N-p-methoxyphenylmaleimide.

Keywords

N-substituted maleimides stabilization thermal processing thermogravimetry  vinyl barrier polymers 

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.Center for Applications in Polymer ScienceCentral Michigan University Mt. PleasantUSA

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