Reactive blending of polyamides with epoxidized elastomers

Melt blending of aliphatic polyamides (PA6, PA66, PA12) with epoxidized and nonepoxidized elastomers (SBS, BS, PB) was investigated. IR and rheological studies have shown that epoxidized elastomers can simultaneously react both with polyamides and within their own phases during melt blending. Relati...

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Bibliographic Details
Published in:Journal of applied polymer science 2007-06, Vol.104 (5), p.2992-3000
Main Authors: Steller, Ryszard T., Micewicz, Ewa, Meissner, Wanda
Format: Article
Language:English
Subjects:
aliphatic polyamides
Applied sciences
butadiene-styrene copolymers
Chemical modifications
Chemical reactions and properties
epoxidation
Exact sciences and technology
melt blending
Organic polymers
Physicochemistry of polymers
polybutadiene
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Summary:Melt blending of aliphatic polyamides (PA6, PA66, PA12) with epoxidized and nonepoxidized elastomers (SBS, BS, PB) was investigated. IR and rheological studies have shown that epoxidized elastomers can simultaneously react both with polyamides and within their own phases during melt blending. Relative intensity of both processes is the main factor, which determines structure and properties of blends. SEM observations indicated that use of epoxidized elastomers improves blend homogeneity and decreases mean size of dispersed elastomer phase in comparison with nonepoxidized elastomers. Mechanical properties of epoxidized elastomers based blends are generally better with respect to similar blends with nonepoxidized elastomers. They depend on blend composition and type of polyamide and elastomer. Elastomer addition decreases tensile strength of all systems but in some cases, a considerable rise of impact strength was measured. Epoxidized SBS block copolymer was found to be the most effective modifier, especially with respect to PA6 and PA12. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
ISSN:0021-8995
1097-4628
DOI:10.1002/app.24368