Toughening of recycled poly(ethylene terephthalate)/glass fiber blends with ethylene–butyl acrylate–glycidyl methacrylate copolymer and maleic anhydride grafted polyethylene–octene rubber
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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DOI：
10.1002/app.27564
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发表时间：
2008-09
影响因子：
3
通讯作者：
Hongyuan Cheng;M. Tian;Liqun Zhang
中科院分区：
文献类型：
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作者：
Hongyuan Cheng;M. Tian;Liqun Zhang
本研究的目的是通过分别添加乙烯-丙烯酸丁酯-甲基丙烯酸缩水甘油酯共聚物（EBAGMA）和马来酸酐接枝聚乙烯-辛烯（POE-g-MAH）来提高回收聚对苯二甲酸乙二醇酯（PET）/玻璃纤维（GF）共混物的韧性。本研究还检查了三元共混物的形态和机械性能。 EBAGMA 在增韧回收 PET/GF 共混物方面比 POE-g-MAH 更有效；正如扫描电子显微镜图像所示，这是由于它与 PET 具有更好的相容性以及更强的纤维/基体粘合力。 PET/GF/EBAGMA 三元共混物在 EBAGMA 含量为 8 wt% 时具有改进的冲击强度和均衡的机械性能。 POE-g-MAH的添加削弱了纤维/基体的结合，因为GF上涂覆了更多的POE-g-MAH，从而导致冲击强度、拉伸强度和弯曲模量减弱。根据动态流变仪测试，EBAGMA和POE-g-MAH的使用均显着提高了熔体储能模量和动态粘度。差示扫描量热分析表明，EBAGMA 的添加降低了 PET/GF 共混物的结晶速率，而 POE-g-MAH 则增加了结晶速率。 © 2008 Wiley periodicals, Inc. J Appl Polym Sci，2008
The aim of this study was to improve the toughness of recycled poly(ethylene terephthalate) (PET)/glass fiber (GF) blends through the addition of ethylene–butyl 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. J Appl Polym Sci, 2008