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Published in: Journal of Polymer Research 6/2019

01-06-2019 | ORIGINAL PAPER

Glycidyl methacrylate-based copolymers as new compatibilizers for polypropylene/ polyethylene terephthalate blends

Authors: Mafalda S. Lima, Áurea A. Matias, João R. C. Costa, Ana C. Fonseca, Jorge F. J. Coelho, Arménio C. Serra

Published in: Journal of Polymer Research | Issue 6/2019

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Abstract

The improvement of flexural properties of polypropylene (PP) could be achieved by blending it with a stiffer polymer like poly(ethylene terephthalate) (PET). The main problem is the compatibilization between a saturated, apolar structure with a polar polyester. Copolymers of glycidyl methacrylate (GMA) and 2-ethylhexyl acrylate (EHA) were prepared, characterized and used as compatibilizers in PP/PET (70/30 wt%) blends at different feed ratios. The effects of compatibilization of these polymers were analyzed by SEM, which shows reduction of the size of PET granules, and by TGA, with an increase in the thermal stability of the compatibilized blends. Thermal properties corresponding to melting and crystallization events were also changed by the introduction of the compatibilizers. The DMTA shows that the Tg of the PET domain is affected by compatibilization, contrary to the Tg of PP domain. The compatibilization efficiency was further confirmed by an increase in flexural strain at flexural strength (εFM).

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Appendix
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Metadata
Title
Glycidyl methacrylate-based copolymers as new compatibilizers for polypropylene/ polyethylene terephthalate blends
Authors
Mafalda S. Lima
Áurea A. Matias
João R. C. Costa
Ana C. Fonseca
Jorge F. J. Coelho
Arménio C. Serra
Publication date
01-06-2019
Publisher
Springer Netherlands
Published in
Journal of Polymer Research / Issue 6/2019
Print ISSN: 1022-9760
Electronic ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-019-1784-7

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