强激光与粒子束, 2012, 24 (1): 89, 网络出版: 2012-02-14
聚-α-甲基苯乙烯空心微球制备过程中的缺损研究
Investigation of defects on PAMS microspheres fabricated with microencapsulation method
聚-α-甲基苯乙烯 空心微球 缺损 乳液微封装 poly-(α-methylstyrene) hollow microsphere defect emulsion microencapsulation
摘要
基于二次乳化技术产生W1/O/W2双重乳液, 采用乳液微封装技术制备聚-α-甲基苯乙烯(PAMS)空心微球, 研究了部分工艺参数对PAMS微球缺损形态和比例的影响。实验结果表明：薄壁微球的低强度导致了微球表面缺损。当微球壁厚一定时, 有3个因素影响缺损微球比例：W2相中聚乙烯醇质量分数、CaCl2质量分数和O/W2的相比, 当它们分别为1.0%, 1.5%, 0.01时, 薄壁(≤2 μm)微球的缺损比例低于40%, 球壳内也无气泡存在。
Abstract
Poly-(α-methylstyrene) (PAMS) microspheres were fabricated with W1/O/W2 double emulsion microencapsulation method, and the effects of polyvinylalcohol (PVA) and CaCl2 weight concentrations and the O/W2 phase ratio on the percentages of defected PAMS microspheres were studied. The weight concentrations of PVA and CaCl2 and the O/W2 phase ratio in the fabrication process of PAMS microspheres were optimized. The results show that, for the three parameters being 1.0%, 1.5%, and 0.01, respectively, the percentage of the defect-free PAMS microspheres without vacuoles in the shell wall can be up to 60%.
陈素芬, 李波, 刘一杨, 张占文, 漆小波. 聚-α-甲基苯乙烯空心微球制备过程中的缺损研究[J]. 强激光与粒子束, 2012, 24(1): 89. Chen Sufen, Li Bo, Liu Yiyang, Zhang Zhanwen, Qi Xiaobo. Investigation of defects on PAMS microspheres fabricated with microencapsulation method[J]. High Power Laser and Particle Beams, 2012, 24(1): 89.
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