Effect of the partially hydrolyzed EVA‐h content on the morphology, rheology, and mechanical properties of PA12/EVA blends

Effect of the partially hydrolyzed EVA‐h content on the morphology, rheology, and mechanical... In this article, a hydrolyzed EVA copolymer (EVA‐h) was chosen as an interfacial agent of PA12/EVA blends. The effect of EVA‐h addition (5 and 10 wt% in relation to EVA phase) on morphological, interfacial and mechanical properties of the systems was investigated. The polymer blends were melt processed in an interpenetrating co‐rotating twin‐screen extruder. The EVA‐h practically did not change the continuity index of the blends. However, it resulted in the reduction of the size of the dispersed EVA phase in polyamide. EVA‐h contributed to the reduction of the interfacial tension (4.6 – 0.32 mN/m) and the formation of a stable morphology. The EVA‐h improved the interaction between PA12 and EVA phases, being its effect more pronounced on the elastic modulus and hardness properties. The behavior of the mechanical properties confirmed the compatibilizer effect EVA‐h in the blends. POLYM. ENG. SCI., 58:335–344, 2018. © 2017 Society of Plastics Engineers http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Polymer Engineering & Science Wiley

Effect of the partially hydrolyzed EVA‐h content on the morphology, rheology, and mechanical properties of PA12/EVA blends

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Publisher
Wiley
Copyright
© 2018 Society of Plastics Engineers
ISSN
0032-3888
eISSN
1548-2634
D.O.I.
10.1002/pen.24579
Publisher site
See Article on Publisher Site

Abstract

In this article, a hydrolyzed EVA copolymer (EVA‐h) was chosen as an interfacial agent of PA12/EVA blends. The effect of EVA‐h addition (5 and 10 wt% in relation to EVA phase) on morphological, interfacial and mechanical properties of the systems was investigated. The polymer blends were melt processed in an interpenetrating co‐rotating twin‐screen extruder. The EVA‐h practically did not change the continuity index of the blends. However, it resulted in the reduction of the size of the dispersed EVA phase in polyamide. EVA‐h contributed to the reduction of the interfacial tension (4.6 – 0.32 mN/m) and the formation of a stable morphology. The EVA‐h improved the interaction between PA12 and EVA phases, being its effect more pronounced on the elastic modulus and hardness properties. The behavior of the mechanical properties confirmed the compatibilizer effect EVA‐h in the blends. POLYM. ENG. SCI., 58:335–344, 2018. © 2017 Society of Plastics Engineers

Journal

Polymer Engineering & ScienceWiley

Published: Jan 1, 2018

References

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