Toughening of recycled poly(ethylene terephthalate)/glass fiber blends with ethylene-butyl acrylate-glycidyl methacrylate copolymer and maleic anhydride grafted polyethylene-octene rubber

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作者：
Cheng, Hongyuan [1 ]
Tian, Ming [1 ]
Zhang, Liqun [1 ]
机构：
[1] Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China
来源：
| 1600年 / John Wiley and Sons Inc.卷 / 109期
关键词：
The aim of this study was to improve the toughness of recycled poly(ethylene terephthalate) (PET)/glass fiber (GF) blends through the addition of ethylenebutyl acrylate-glycidyl methacrylate copolymer (EBAGMA) and maleic anhydride grafted polyethylene-octene (POE-g-MAH) individually. The morphology and mechanical properties of the ternary blend were also examined in this study. EBAGMA was more effective in toughening recycled PET/GF blends than POE-g-MAH; this resulted from its better compatibility with PET and stronger fiber/matrix bonding; as indicated by scanning electron microscopy images. The PET/GF/EBAGMA ternary blend had improved impact strength and well-balanced mechanical properties at a loading of 8 wt % EBAGMA. The addition of POE-g-MAH weakened the fiber/matrix bonding due to more POE-g-MAH coated on the GF; which led to weakened impact strength; tensile strength; and flexural modulus. According to dynamic rheometer testing; the use of both EBAGMA and POE-g-MAH remarkably increased the melt storage modulus and dynamic viscosity. Differential scanning calorimetry analysis showed that the addition of EBAGMA lowered the crystallization rate of the PET/GF blend; whereas POE-g-MAH increased it. © 2008 Wiley Periodicals; Inc;
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