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首页> 外文期刊>Langmuir: The ACS Journal of Surfaces and Colloids >A Novel Approach for Preparation of Micrometer-sized, Monodisperse Dimple and Hemispherical Polystyrene Particles
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A Novel Approach for Preparation of Micrometer-sized, Monodisperse Dimple and Hemispherical Polystyrene Particles

机译：一种制备微米级，单分散酒窝和半球形聚苯乙烯颗粒的新方法

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摘要

Microilleter-sized, monodisperse dimple and hemispherical polystyrene (PS) particles were successfully prepared by heating (55-70 degrees C) of spherical PS particles dispersed in methanol/water media (40/60 to 80/20, w/w) in the presence of decane droplets, and subsequent cooling down to room temperature. Decane was absorbed by the PS particles during the heating process. Decane-absorbed PS particles phase-separated into PS and decane phases in the inside during the cooling process, and eventually dimple and/or hemispherical particles were formed by removal of the decane phase from phase-separated PS/decane particles by evaporation. The size of the dimple, which is determined by the volume of decane phase-separated from decane-absorbed PS particles during the cooling process, increased with increases in the heating temperature and the methanol content.
机译：通过将分散在甲醇/水介质（40/60至80/20，w / w）中的球形PS颗粒加热（55-70摄氏度），成功制备了微尺寸，单分散的酒窝和半球形聚苯乙烯（PS）颗粒。存在癸烷液滴，然后冷却至室温。癸烷在加热过程中被PS颗粒吸收。癸烷吸收的PS颗粒在冷却过程中在内部相分离成PS相和癸烷相，最终通过蒸发从相分离的PS /癸烷颗粒中除去癸烷相而形成凹窝和/或半球形颗粒。凹痕的尺寸由冷却过程中从吸收癸烷的PS颗粒中分离出的癸烷的体积决定，随加热温度和甲醇含量的增加而增加。

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