杨璨,潘大伟,陈强,朱益飞,刘梅芳,李波

• 1:东南大学能源与环境学院
• 2:中国工程物理研究院激光聚变研究中心

摘要(Abstract)：

为了研究聚氧化乙烯(PEO)表面活性剂对毫米级复合乳粒的稳定机制,在外水相(W2)中引入不同相对分子质量PEO制备聚苯乙烯(PS)复合乳粒,考察其对复合乳粒稳定性的影响。结果表明,随着PEO相对分子质量增大,聚合物流体力学半径增大,空间位阻效应越强,界面强度增大,复合乳粒稳定性增加。此外,PEO水溶液黏度也随着相对分子量增加而增大,复合乳粒在溶液中发生位移或形变时受到的阻力增大,复合乳粒不易发生破裂或聚并。因此,当PEO相对分子质量为100和200 kg×mol~(-1)时,PS复合乳粒稳定性较差;当PEO相对分子质量大于600 kg×mol~(-1)时,PS复合乳粒稳定性较好。此外,还分析了多包覆PS复合乳粒的失稳行为。

关键词(KeyWords)： 乳液稳定性;聚氧化乙烯;聚苯乙烯复合乳粒;表面活性剂

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51703212)

作者(Author): 杨璨,潘大伟,陈强,朱益飞,刘梅芳,李波

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