Photopolymerization of Pluronic F127 diacrylate: a colloid-templated polymerization
Photopolymerization of Pluronic F127 diacrylate: a colloid-templated polymerization
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DOI：
10.1039/c1sm05095h
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发表时间：
2011-01-01
期刊：
影响因子：
3.4
通讯作者：
Tirelli, Nicola
中科院分区：
文献类型：
--
作者：
Di Biase, Manuela;de Leonardis, Piero;Tirelli, Nicola
普朗尼克F127二丙烯酸酯（F127 DA）是一种双官能丙烯酸酯，因此原则上应产生宏观交联材料;然而，其在水中的光聚合不会产生3D延伸的水凝胶。在光聚合后存在的主要物种似乎是交联胶束，这表明胶束形态的F127 DA的聚合具有模板效应。结构相似性导致前体和聚合材料的物理状态对于宽范围的浓度（5- 25%wt）和温度（10-37 ℃）非常相似。此外，F127 DA的长程形态似乎具有模板效应：在胶束凝胶状态下光聚合并以高浓度（25%wt）再分散的样品显示出长程组织，其取决于浓度，因此取决于前体的顺序。
Pluronic F127 diacrylate (F127DA) is a bifunctional acrylate and as such it should in principle produce macroscopically cross-linked materials; however, its photopolymerization in water does not lead to 3D-extended hydrogels. The main species present after photopolymerization appear to be cross-linked micelles, which indicates that the micellar morphology of F127DA has a template effect on the polymerization. The structural analogy causes the physical state of precursor and polymerized materials to be very similar for a wide range of concentrations (5-25% wt) and temperatures (10-37 degrees C). Also the long-range morphology of F127DA appears to have a template effect: samples photopolymerized in a micellar gel state and redispersed at high concentration (25% wt) show a long-range organization that depended on the concentration and therefore on the order of the precursor.