Preparation and Compatibility Evaluation of Polypropylene/High Density Polyethylene Polyblends

Materials

Jia-Horng Lin⁶  Yi-Jun Pan¹  Chi-Fan Liu⁵  Chien-Lin Huang⁷  Chien-Teng Hsieh⁴  Chih-Kuang Chen²  Zheng-Ian Lin⁶  Ching-Wen Lou³ 

[1] Department of Materials and Textiles, Oriental Institute of Technology, New Taipei City 22061, Taiwan;The Polymeric Biomaterials Laboratory, Department of Fiber and Composite Materials, Feng Chia University, Taichung City 40724, Taiwan;;Institute of Biomedical Engineering and Materials Science, Central Taiwan University of Science and Technology, Taichung City 40601, TaiwanDepartment of Fashion Design and Merchandising, Shih Chien University Kaohsiung Campus, Kaohsiung City 84550, Taiwan;Office of Physical Education and Sports Affairs, Feng Chia University, Taichung 407, Taiwan;Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung City 40724, Taiwan;Department of Fiber and Composite Materials, Feng Chia University, Taichung City 40724, Taiwan;

关键词: polypropylene (PP);    high density polyethylene (HDPE);    polyblend;    melt-blending;    compatibility;   

DOI  :  10.3390/ma8125496

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.