Compatibilization of Blends Containing Thermotropic Liquid Crystalline Polymers With Sulfonate Ionomers
Compatibilization of Blends Containing Thermotropic Liquid Crystalline Polymers With Sulfonate Ionomers
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DOI：
10.1016/0032-3861(96)82912-0
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发表时间：
1996-02
期刊：
影响因子：
4.6
通讯作者：
D. Dutta;R. Weiss;Jia-song He
中科院分区：
文献类型：
--
作者：
D. Dutta;R. Weiss;Jia-song He
轻度磺化聚苯乙烯离聚物的锌盐（Zn-SPS）是全芳香族液晶聚酯（LCP）与尼龙66（PA 66）和聚碳酸酯（PC）共混物的有效增容剂。Zn-SPS与PC、PA 66和LCP均为相容性，但相容性的来源不同。Zn-SPS和PA 66混合，因为磺酸盐和酰胺基团之间的强分子间吸引力的相互作用，而离聚物是与PC和LCP混溶的，由于分子内排斥力的相互作用沿着离聚物分子。在LCP/PA 66和LCP/PC共混物中加入Zn-SPS，可减小分散相尺寸，提高相间的粘附力。增容共混物具有显着更高的拉伸模量和拉伸断裂应力比没有离聚物的共混物。
Zinc salts of lightly sulfonated polystyrene ionomers (Zn-SPSs) are shown to be effective compatibilizers for blends of a wholly aromatic liquid crystalline polyester (LCP) with nylon 66 (PA66) and polycarbonate (PC). Zn-SPS is miscible with PC, PA66 and the LCP, though the origins of miscibility are different for the three binary blends. Zn-SPS and PA66 mix because of strong intermolecular attractive interactions between the sulfonate and amide groups, while the ionomer is miscible with PC and the LCP as a result of intramolecular repulsive interactions along the ionomer molecules. The addition of Zn-SPS to LCP/PA66 and LCP/PC blends reduces the dispersed phase size and improves the adhesion between the phases. The compatibilized blends have significantly higher tensile modulus and tensile stress at break than the blends without ionomer.