Crystal-like pattern formation in polymerization-induced phase separation.
Crystal-like pattern formation in polymerization-induced phase separation.
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DOI：
10.1103/physreve.70.040501
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发表时间：
2004-10
期刊：
影响因子：
--
通讯作者：
Yuichiro Matsushita;H. Furukawa;M. Okada
中科院分区：
文献类型：
--
作者：
Yuichiro Matsushita;H. Furukawa;M. Okada
在无规共聚物聚（二甲基硅氧烷-二苯基硅氧烷）存在下，4-氯苯乙烯单体自由基聚合引起的液-液相分离中发现了一种独特的畴结构。通过相分离产生具有窄尺寸分布的液滴，并且这些液滴几乎不通过碰撞聚结。随着液滴体积的增大，液滴逐渐充满空间，并自发地排列成规则的阵列，就像晶体一样。基于两种分离组分的粘弹性差异较大，讨论了规则排列的形成机理。
A unique domain structure was found in liquid-liquid phase separation induced by radical polymerization of 4-chlorostyrene monomer in the presence of random copolymer poly(dimethylsiloxane-co-diphenylsiloxane). Droplets with a narrow size distribution were generated by phase separation, and these droplets hardly coalesced by collisions. With the growth of droplet size, droplets gradually filled the space and spontaneously arranged themselves in a regular array like a crystal. The mechanism of regular array formation was discussed based on the large difference in viscoelastic properties between two segregating components.