Design of polymer blend rheology - III. Effect of maleic anhydride containing copolymers on the melt viscosity of polyamides

R. Vankan, P. Degée, Robert Jérôme, P. Teyssié

Research output: Contribution to journalArticle


Addition of small amounts of maleic anhydride containing copolymers remarkably increases the melt viscosity of the m x D,6 polyamides (PA). Random copolymers of styrene and maleic anhydride, P(S-co-MA), have been melt blended with PA in a ratio ranging from 0.5 to 5 wt%. A linear dependence has been observed for the blend viscosity on the molar ratio of the maleic anhydride subunits in the copolymer and the amino end-groups of PA. This linear relationship holds even for blends containing a molar excess of anhydride compared to amine. These rheological effects are of prime importance for the highly desirable control of the PA processing.

Original languageEnglish
Pages (from-to)221-228
Number of pages8
JournalPolymer Bulletin
Issue number2
Publication statusPublished - 1 Jul 1994
Externally publishedYes


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