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首页> 外文期刊>Journal of Macromolecular Science. Pure and Applied Chemistry >Synthesis, Characterization and Properties of Novel Amphiphilic Phosphated Ionomers by Ring-Opening Reaction of Epoxidized Styrene-Butadiene-Styrene Triblock Polymer
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Synthesis, Characterization and Properties of Novel Amphiphilic Phosphated Ionomers by Ring-Opening Reaction of Epoxidized Styrene-Butadiene-Styrene Triblock Polymer

机译：环氧苯乙烯-丁二烯-苯乙烯三嵌段聚合物的开环反应制备新型两亲性磷酸化离聚物

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摘要

A method for synthesis of novel phosphated ionomer of (styrene-butadiene-styrene) triblock polymer (SBS) from epoxidized SBS wasdeveloped. The optimum conditions for the ring-opening reaction of the epoxidized SBS with aqueous solution of disodium hydrogen phos-phate were studied. It was found that during the ring-opening reaction phase transfer catalyst, ring-opening catalyst and pH regulator werenecessary to enhance the conversion of epoxy groups to ionic groups. The products were characterized with Fourier Transform InfraredSpectrophotometry (FTIR) and transmission electron microscopy (TEM). Some properties of the phosphated ionomer were studied.With increasing ionic groups or the ionic potential of the cation of the ionomer, the water absorbency emulsifying volume and the intrinsicviscosity of the ionomer increase, whereas the oil absorbency decreases. The ionomer possesses excellent emulsifying property, ascompared with the sulfonated ionomer. The disodium phosphated ionomers in the presence of 10% zinc stearate showed better mechanicalproperties than the original epoxy SBS. Optimum mechanical properties occurred at the ionic group content of 0.95 mmol/g ionomer. Whenthe ionomer was blended with crystalline polypropylene, a synergistic effect occurs with respect to the tensile strength. The ionomerbehaves as a compatibilizer for blending equal amount of SBS and oil-resistant chlorohydrin rubber (CHR) to form an oil resistant thermo-plastic elastomer. SEM microphotographs indicated enhanced compatibility between the two components of the blend in the presence of theionomer.
机译：开发了一种由环氧化的SBS合成新型的（苯乙烯-丁二烯-苯乙烯）三嵌段聚合物（SBS）的磷酸化离聚物的方法。研究了环氧化SBS与磷酸氢二钠水溶液开环反应的最佳条件。发现在开环反应相转移催化剂中，开环催化剂和pH调节剂对于增强环氧基向离子基的转化是必要的。用傅立叶变换红外分光光度法（FTIR）和透射电子显微镜（TEM）对产品进行表征。研究了磷酸化离聚物的一些性能。随着离聚物的离子基团数量增加或阳离子的离子电势增加，吸水剂的乳化体积和固有粘度增加，而吸油性降低。与磺化离聚物相比，该离聚物具有优异的乳化性能。在硬脂酸锌含量为10％的情况下，磷酸二钠离聚物表现出比原始环氧SBS更好的机械性能。在离子基团含量为0.95 mmol / g离聚物时，机械性能最佳。当将离聚物与结晶聚丙烯共混时，在拉伸强度方面产生协同作用。该离聚物具有作为相容剂，用于将等量的SBS和耐油的氯醇橡胶（CHR）混合形成耐油的热塑性弹性体。 SEM显微照片表明在存在离聚物的情况下，共混物的两种组分之间的相容性增强。

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