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Preparation and Properties Research of PA6/PLA Blends Toughening Modified by TPU

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Abstract:

Polyamide 6/Poly(lactic acid) (PA6/PLA) blends introduce the degradability of PLA to high performance PA6, but the bad toughness of both PA6 and PLA limits the application of blends. Aiming at this deficiency, thermoplastic polyurethane (TPU) was used as an additive for modifying the toughness of PA6/PLA blends. PA6/PLA/TPU blends at various compositions were prepared by melt blending, the effects of blend compositions on the morphology, thermal and mechanical properties of blends were investigated. The results showed that the addition of TPU improves the compatibilization between PA6 and PLA and makes the blends show more obvious plastic fracture behavior than PA6/PLA.When the content of PLA in PA6/PLA increases, the impact and tensile strength of blends decrease slightly with the intense decrease of the elongation at break, adding TPU into PA6/PLA blends strengthens the toughness of blends, but the tensile strength of blends decreases. Moreover, the crystallinity of PA6 /PLA blend is hampered by TPU.

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Info:

Periodical:

Applied Mechanics and Materials (Volume 200)

Pages:

278-281

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.200.278

Citation:

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Online since:

October 2012

Authors:

Yi Chen, Wei Jian Xu, Guang Sheng Zeng, Xiao Hong Zeng, Wen Yong Liu, Yu Gang Huang

Keywords:

Mechanical Property, Melt Blending, PA6/PLA/TPU, Thermal Property

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