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Published in: Journal of Polymer Research 2/2019

01-02-2019 | ORIGINAL PAPER

Effect of soft segment content of Pebax® Rnew on the properties of Nylon-6/SMA/PEBA blends

Authors: Wei-Ming Chen, Ming-Chien Yang, Shinn-Gwo Hong, Yi-Shen Hsieh

Published in: Journal of Polymer Research | Issue 2/2019

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Abstract

To improve the impact property of Nylon 6 at temperature below 0°C, Nylon 6 was toughened by the blending of Pebax® Rnew (PEBA) and compatibilized with poly(styrene-co-maleic anhydride) (SMA). The effect of the content of soft segment of PEBA, polytetramethylene oxide (PTMO), on the toughening properties was investigated. The impact properties of the resulting blends were measured at 23°C and − 20°C. With the increase of PTMO content, the impact strength increased, whereas the tensile and flexural properties decreased. The thermal stability of these blends was not affected significantly. Rheological properties revealed that these blends exhibited predominantly viscous behavior at 240°C. Furthermore, higher PTMO content led to higher storage modulus (G’), lower loss modulus (G”) and complex viscosity (η*). The higher PTMO content of PEBA also improved the toughness more. The DSC results showed that the glass transition temperature (Tg) of Nylon 6 decreased with the increase of PTMO content. The crystallization temperature and the rate of crystallization of the blends were not much affected by the PTMO content, yet the relative amounts of α and γ crystals formed were affected by the type of PEBA added. Based on the Avrami model, the non-isothermal crystallization of Nylon 6 in the blends was a diffusion-controlled crystallization.

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Metadata
Title
Effect of soft segment content of Pebax® Rnew on the properties of Nylon-6/SMA/PEBA blends
Authors
Wei-Ming Chen
Ming-Chien Yang
Shinn-Gwo Hong
Yi-Shen Hsieh
Publication date
01-02-2019
Publisher
Springer Netherlands
Published in
Journal of Polymer Research / Issue 2/2019
Print ISSN: 1022-9760
Electronic ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-018-1684-2

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