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首页> 外文期刊>Journal of Applied Polymer Science >Compatibilization of nylon 6/liquid crystalline polymer blends with three types of compatibilizers
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Compatibilization of nylon 6/liquid crystalline polymer blends with three types of compatibilizers

机译：尼龙6 /液晶聚合物共混物与三种相容剂的相容性

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摘要

Polyblends of nylon 6 and liquid crystalline polymer (LCP) (Vectra A 950) are immiscible and highly incompatible, with resultant poor interfacial adhesion, large phase domains, and poor mechanical properties. In the present work, compatibilizing strategies are put forward for blends containing nylon and LCP. Effects of three types of compatibilizers, including ionomer Zn-sulfonated polystyrene (SPS), reactive copolymer styrene-maleic anhydride (SMA), functional grafted copolymers-polypropylene grafted glycidyl methacrylate (PP-g-GMA) and polypropylene grafted maleic anhydride (PP-g-MAH)-are studied in the aspects of morphology and dynamic mechanical behavior. The addition of compatibilizers decreases the domain size of the dispersed phase and results in improved interfacial adhesion between LCP and matrix. The compatibilization mechanism is discussed by way of diffuse reflectance Fourier transform spectroscopy (DRIFT), showing the reaction between compatibitizers and matrix nylon 6. Mechanical properties are improved by good interfacial adhesion. The contribution of SMA to mechanical properties is more obvious than that of Zn-SPS and grafted PPs used. The blending procedure is correlated with the improvement of mechanical properties by the addition of compatibilizer. Two-step blending is demonstrated as an optimum method to obtain composites with better mechanical properties as a result of a greater chance for LCP to contact the compatibilizer. (C) 2002 Wiley Periodicals, Inc. [References: 43]
机译：尼龙6和液晶聚合物（LCP）（Vectra A 950）的共混物不混溶且高度不相容，导致不良的界面粘合性，较大的相域和不良的机械性能。在目前的工作中，提出了含有尼龙和LCP的共混物的增容策略。三种类型的增容剂的作用，包括离聚物锌磺化聚苯乙烯（SPS），反应性共聚物苯乙烯-马来酸酐（SMA），功能性接枝共聚物-聚丙烯接枝的甲基丙烯酸缩水甘油酯（PP-g-GMA）和聚丙烯接枝的马来酸酐（PP- （g-MAH）-在形态和动态力学行为方面进行了研究。相容剂的添加减小了分散相的畴尺寸，并导致LCP和基质之间的界面粘合性提高。通过漫反射傅里叶变换光谱（DRIFT）讨论了增容机理，表明了增容剂与基体尼龙6之间的反应。良好的界面粘合力改善了机械性能。 SMA对机械性能的影响比所用的Zn-SPS和接枝PP更明显。通过添加相容剂，共混过程与机械性能的改善相关。由于LCP与相容剂接触的机会增加，两步共混被证明是获得具有更好机械性能的复合材料的最佳方法。 （C）2002 Wiley Periodicals，Inc. [参考：43]

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