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首页> 外文期刊>Journal of Applied Polymer Science >Miscibility Enhancement of PP/PBT Blends with a Side-Chain Liquid Crystalline Ionomer
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Miscibility Enhancement of PP/PBT Blends with a Side-Chain Liquid Crystalline Ionomer

机译：带有侧链液晶离聚物的PP / PBT共混物的混溶性增强

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摘要

Side-chain liquid crystalline ionomer (SLCI) containing sulfonic acid groups with a polymethylhydrosiloxane main-chain was used in the blends of polypropylene (PP) and polybutylene terephthalate (PBT) as a compatibilizer. The crystalline behavior, morphological, and mechanical properties of the blends were investigated in detail by differential scanning calorimetry (DSC), polarizing optical microscope (POM), Fourier transforms infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). Revealed by the shift of T_m in DSC thermogram and the shift of the absorbed peak in FTIR spectra, specific interaction led to stronger interfacial adhesion between these phases, which resulted in much finer dispersion of the minor PBT phase in PP matrix. The SLCI containing sulfonate acid groups acted as physical crosslinking agent along the interface, which compatibilized PP/PBT blends. The mechanical property of the blends including 4 wt % SLCI contents was better than that of other SLCI contents in the blends.
机译：在聚丙烯（PP）和聚对苯二甲酸丁二醇酯（PBT）的共混物中使用了具有磺酸基和聚甲基氢硅氧烷主链的侧链液晶离聚物（SLCI）。通过差示扫描量热法（DSC），偏振光学显微镜（POM），傅里叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）详细研究了共混物的结晶行为，形态和机械性能。通过DSC温度谱图中T_m的移动和FTIR光谱中吸收峰的移动可以看出，特定的相互作用导致这些相之间的界面粘附力增强，从而导致次要PBT相在PP基体中的分散度更高。含磺酸基的SLCI沿界面充当物理交联剂，使PP / PBT共混物相容。包含4wt％SLCI含量的共混物的机械性能优于共混物中其他SLCI含量的机械性能。

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