Tricontinuous Morphology of Ternary Polymer Blends Driven by Photopolymerization: Reaction and Phase Separation Kinetics
Tricontinuous Morphology of Ternary Polymer Blends Driven by Photopolymerization: Reaction and Phase Separation Kinetics
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DOI：
10.1021/ma500302k
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发表时间：
2014-06
期刊：
影响因子：
5.5
通讯作者：
Toshiya Shukutani;Takahiro Myojo;H. Nakanishi;T. Norisuye;Qui Tran‐Cong‐Miyata
中科院分区：
文献类型：
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作者：
Toshiya Shukutani;Takahiro Myojo;H. Nakanishi;T. Norisuye;Qui Tran‐Cong‐Miyata
由溶解在甲基丙烯酸甲酯单体中的聚丙烯酸乙酯和聚甲基丙烯酸乙酯衍生物组成的三元混合物的相分离是通过光聚合诱导和驱动的。通过改变光强度来改变混合物的初始组成和所得聚甲基丙烯酸甲酯的分子量，由于相分离和聚合之间的竞争，出现了多种形态，从分离的双液滴、Janus 状液滴、核壳、萨拉米、双连续到三连续结构。在新兴的形态中，三连续结构很重要，并且使用激光扫描共焦显微镜（LSCM）特别研究了形成过程的细节。时间分辨实验表明，这些三连续结构是通过连续相分离过程的两个步骤生成的。这些三连续结构的形成是关于聚合讨论的。
Phase separation of a ternary mixture composed of poly(ethyl acrylate) and poly(ethyl methacrylate) derivatives dissolved in methyl methacrylate monomer was induced and driven by photopolymerization. Upon varying the initial composition of the mixture and the molecular weight of the resulting poly(methyl methacrylate) via changing the light intensity, a wide variety of morphologies ranging from separated double droplets, Janus-like droplets, core–shell, salami, bicontinuous to tricontinuous structures emerged due to the competition between phase separation and polymerization. Among the emerging morphologies, the tricontinuous structures were significant, and the details of the formation process were particularly investigated by using laser-scanning confocal microscopy (LSCM). Time-resolved experiments reveal that these tricontinuous structures were generated via two steps of the consecutive phase separation process. The formation of these tricontinuous structures is discussed with respect to the polymeriz...