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Materials 2015, 8(12), 8850-8859; doi:10.3390/ma8125496

Preparation and Compatibility Evaluation of Polypropylene/High Density Polyethylene Polyblends

1
Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung City 40724, Taiwan
2
School of Chinese Medicine, China Medical University, Taichung City 40402, Taiwan
3
Department of Fashion Design, Asia University, Taichung City 41354, Taiwan
4
Department of Materials and Textiles, Oriental Institute of Technology, New Taipei City 22061, Taiwan
5
Office of Physical Education and Sports Affairs, Feng Chia University, Taichung 407, Taiwan
6
Department of Fiber and Composite Materials, Feng Chia University, Taichung City 40724, Taiwan
7
Department of Fashion Design and Merchandising, Shih Chien University Kaohsiung Campus, Kaohsiung City 84550, Taiwan
8
The Polymeric Biomaterials Laboratory, Department of Fiber and Composite Materials, Feng Chia University, Taichung City 40724, Taiwan
9
Institute of Biomedical Engineering and Materials Science, Central Taiwan University of Science and Technology, Taichung City 40601, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Wen-Hsiang Hsieh
Received: 23 September 2015 / Revised: 8 December 2015 / Accepted: 11 December 2015 / Published: 17 December 2015
(This article belongs to the Special Issue Selected Papers from ICBEI2015)
View Full-Text   |   Download PDF [4123 KB, uploaded 17 December 2015]   |  

Abstract

This study proposes melt-blending polypropylene (PP) and high density polyethylene (HDPE) that have a similar melt flow index (MFI) to form PP/HDPE polyblends. The influence of the content of HDPE on the properties and compatibility of polyblends is examined by using a tensile test, flexural test, Izod impact test, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), polarized light microscopy (PLM), and X-ray diffraction (XRD). The SEM results show that PP and HDPE are incompatible polymers with PP being a continuous phase and HDPE being a dispersed phase. The FTIR results show that the combination of HDPE does not influence the chemical structure of PP, indicating that the polyblends are made of a physical blending. The DSC and XRD results show that PP and HDPE are not compatible, and the combination of HDPE is not correlated with the crystalline structure and stability of PP. The PLM results show that the combination of HDPE causes stacking and incompatibility between HDPE and PP spherulites, and PP thus has incomplete spherulite morphology and a smaller spherulite size. However, according to mechanical property test results, the combination of HDPE improves the impact strength of PP. View Full-Text
Keywords: polypropylene (PP); high density polyethylene (HDPE); polyblend; melt-blending; compatibility polypropylene (PP); high density polyethylene (HDPE); polyblend; melt-blending; compatibility
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Lin, J.-H.; Pan, Y.-J.; Liu, C.-F.; Huang, C.-L.; Hsieh, C.-T.; Chen, C.-K.; Lin, Z.-I.; Lou, C.-W. Preparation and Compatibility Evaluation of Polypropylene/High Density Polyethylene Polyblends. Materials 2015, 8, 8850-8859.

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