利用聚醚硅油中硅油链段的表面活性,引导聚醚链段向聚苯乙烯表面迁移扩散,有效地提高了聚苯乙烯薄膜的表面极性和亲水性,水的接触角下降了70°,表面自由能增幅达180%,极性分量增加了9倍. 采用ATR-FTIR测试技术检测了聚醚硅油中硅油链段在共混物薄膜表面的"靶向"作用,分析了不同接触介质对聚醚硅油改性作用的影响. 结果表明,玻璃介质通过诱导作用促使聚醚硅油产生表面迁移行为,而空气介质中,硅油链段的良好靶向作用引导聚醚硅油分子在聚合物表面充分富集.
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