CAJ | 학술논문

采用悬浮聚合方法制备了粒径约为100~120μm的聚苯乙烯（PS）微球。通过在聚合过程中逐步取样，并结合扫描电子显微镜（SEM）及光学显微镜（OM）等手段研究了样品在不同聚合时期中的微观形貌、粒径及其分布的情况，讨论了悬浮聚合制备大粒径PS微球的反应历程。结果表明：大粒径PS微球的悬浮聚合过程主要经历3阶段：液—液分散期、粒子增长期和粒子恒定期，在特定的聚合时期，微球的生长方式和微观形貌有显著不同。在不同生长时期内通过对聚合反应条件的选择性调节，可实现对最终PS微球的形貌、粒径及其分布的有效控制。
채용현부취합방법제비료립경약위100~120μm적취분을희（PS）미구。통과재취합과정중축보취양，병결합소묘전자현미경（SEM）급광학현미경（OM）등수단연구료양품재불동취합시기중적미관형모、립경급기분포적정황，토론료현부취합제비대립경PS미구적반응역정。결과표명：대립경PS미구적현부취합과정주요경력3계단：액—액분산기、입자증장기화입자항정기，재특정적취합시기，미구적생장방식화미관형모유현저불동。재불동생장시기내통과대취합반응조건적선택성조절，가실현대최종PS미구적형모、립경급기분포적유효공제。
Polystyrene (PS) microspheres with diameter about 100~120μm is synthesized by suspension polymerization method. In order to research the reaction progress, micromorphology, diameter and size distribu-tion of PS microspheres obtained by stepwise sampling in growth process are characterized by means of scanning electron microscope (SEM) and optical microscope (OM). The results indicate that the growth of PS microspheres mainly experiences three stages, including the period of liquid-liquid dispersion, the period of growth and the pe-riod of stability. The growth mode and micromorphology of PS microspheres are significantly different in specific period. In times of regulating the reaction conditions selec-tivity, the morphology, diameter and size distribution can be controlled under various process of suspension polym-erization effectively.