Preparation of hemispherical polystyrene particles utilizing the solvent evaporation method in aqueous dispersed systems
Preparation of hemispherical polystyrene particles utilizing the solvent evaporation method in aqueous dispersed systems
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DOI：
10.1038/pj.2012.71
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发表时间：
2012-11
期刊：
影响因子：
2.8
通讯作者：
T. Tanaka;Tomoe Yamagami;Tatsuhiro Nogami;H. Minami;M. Okubo
中科院分区：
文献类型：
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作者：
T. Tanaka;Tomoe Yamagami;Tatsuhiro Nogami;H. Minami;M. Okubo
在室温下，将分散在表面活性剂水溶液中的聚苯乙烯(PS)/十六烷(HD)/甲苯均相微滴缓慢蒸发，然后从不同相分离形态的PS/HD粒子中快速脱除HD，制备了各种非球形聚苯乙烯(PS)粒子。通过调节不同类型的表面活性剂的界面张力来控制PS/HD粒子的形态。以平均链长为30.8的环氧乙烷聚氧乙烯醚为表面活性剂，从具有Janus结构的PS/HD/甲苯相分离液滴中得到了表面平坦的半球形PS粒子。
Various nonspherical polystyrene (PS) particles were prepared by slow evaporation of toluene (used common good solvent) from homogeneous PS/hexadecane (HD)/toluene droplets dispersed in surfactant aqueous solutions at room temperature, followed by the rapid removal of HD from PS/HD particles with various phase-separated morphologies. The morphology of PS/HD particles was controlled by tuning the interfacial tension with various types of surfactants. Hemispherical PS particles with flat surfaces were obtained from phase-separated PS/HD/toluene droplets having a Janus structure, when polyoxyethylene nonylphenyl ether with an average ethylene oxide chain length of 30.8 was used as the surfactant.