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首页> 外文期刊>Journal of Applied Polymer Science >Influences of Ethylene–Butylacrylate–Glycidyl Methacrylate on Morphology and Mechanical Properties of Poly(butylene terephthalate)/ Polyolefin Elastomer Blends
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Influences of Ethylene–Butylacrylate–Glycidyl Methacrylate on Morphology and Mechanical Properties of Poly(butylene terephthalate)/ Polyolefin Elastomer Blends

机译：乙烯-丙烯酸丁酯-甲基丙烯酸缩水甘油酯对聚对苯二甲酸丁二醇酯/聚烯烃弹性体共混物形态和力学性能的影响

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摘要

Elastomer ethylene–butylacrylate–glycidyl methacrylate (PTW) containing epoxy groups were chosen as toughening modifier for poly(butylene terephthalate) (PBT)/polyolefin elastomer (POE) blend. The morphology, thermal, and mechanical properties of the PBT/POE/PTW blend were studied. The infrared spectra of the blends proved that small parts of epoxy groups of PTW reacted with carboxylic acid or hydroxyl groups in PBT during melt blending, resulting in a grafted structure which tended to increase the viscosity and interfere with the crystallization process of the blend. The morphology observed by scanning electron microscopy revealed the dispersed POE particles were well distributed and the interaction between POE and PBT increased in the PBT/POE/PTW blends. Mechanical properties showed the addition of PTW could lead to a remarkable increase about 10-times in impact strength with a small reduction in tensile strength of PBT/POE blends. Differential scanning calorimetry results showed with increasing PTW, the crystallization temperature (T_c) and crystallinity (X_c) decreased while the melting point (T_m) slightly increased. Dynamic mechanical thermal analysis spectra indicated that the presence of PTW could improve the compatibility of PBT/POE blends.
机译：选择含环氧基的弹性体乙烯-丙烯酸丁酯-甲基丙烯酸缩水甘油酯（PTW）作为聚对苯二甲酸丁二醇酯（PBT）/聚烯烃弹性体（POE）混合物的增韧改性剂。研究了PBT / POE / PTW共混物的形貌，热学和机械性能。共混物的红外光谱证明，在熔融共混过程中，PTW的小部分环氧基与PBT中的羧酸或羟基发生反应，形成了一种接枝结构，倾向于增加粘度并干扰共混物的结晶过程。通过扫描电子显微镜观察的形态显示，在PBT / POE / PTW共混物中，分散的POE颗粒分布良好，并且POE和PBT之间的相互作用增加。力学性能表明，添加PTW可以使冲击强度显着提高约10倍，而PBT / POE共混物的拉伸强度却有所降低。差示扫描量热法结果显示，随着PTW的增加，结晶温度（T_c）和结晶度（X_c）降低，而熔点（T_m）则略有增加。动态机械热分析光谱表明，PTW的存在可以改善PBT / POE共混物的相容性。

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