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Appl. Sci. 2017, 7(12), 1254; doi:10.3390/app7121254

The Effects of Thermoplastic Polyurethane on the Structure and Mechanical Properties of Modified Polypropylene Blends

1
,
2,3,4,5
and
4,5,6,7,8,9,*
1
Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan
2
School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China
3
Graduate Institute of Biotechnology and Biomedical Engineering, Central Taiwan University of Science and Technology, Taichung 40601, Taiwan
4
Department of Chemistry and Chemical Engineering, Minjiang University, Fuzhou 350108, China
5
College of Textile and Clothing, Qingdao University, Qingdao 266071, China
6
Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan
7
Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China
8
School of Chinese Medicine, China Medical University, Taichung 40402, Taiwan
9
Department of Fashion Design, Asia University, Taichung 41354, Taiwan
*
Author to whom correspondence should be addressed.
Received: 25 October 2017 / Revised: 19 November 2017 / Accepted: 29 November 2017 / Published: 3 December 2017
(This article belongs to the Section Materials)
View Full-Text   |   Download PDF [1681 KB, uploaded 3 December 2017]   |  

Abstract

In this study, a melt-compounding process was used to produce ordinary polypropylene (PP)/thermoplastic polyurethane (TPU) blends and modified impact-resistant polypropylene (MPP)/TPU blends. The influences of TPU on the blending morphology, melting behavior, crystallization behavior, and mechanical properties of these blends were investigated. Differential scanning calorimetry results show that using TPU influences the crystalline and melting behavior of PP/TPU blends, but not of MPP/TPU blends. X-ray diffraction analysis indicated that the presence of TPU neither influences the crystalline structure of PP nor creates new crystalline peaks. The mechanical property test results revealed that PP/TPU blends demonstrate better tensile strength, Young’s modulus, and flexural strength, whereas MPP/TPU blends exhibit higher energy absorption and impact strength. This study is expected to produce optimal products with the preferred continuous and dispersive phases for end users, designing multiple and compatible functionalities of blends. View Full-Text
Keywords: polymer composites; polypropylene; modified polypropylene; thermoplastic polyurethane; impact strength; melt-blending method polymer composites; polypropylene; modified polypropylene; thermoplastic polyurethane; impact strength; melt-blending method
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Lin, T.A.; Lou, C.-W.; Lin, J.-H. The Effects of Thermoplastic Polyurethane on the Structure and Mechanical Properties of Modified Polypropylene Blends. Appl. Sci. 2017, 7, 1254.

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