Photopolymerization in Pluronic Lyotropic Liquid Crystals: Induced Mesophase Thermal Stability
Photopolymerization in Pluronic Lyotropic Liquid Crystals: Induced Mesophase Thermal Stability
复制标题
Pluronic 溶致液晶中的光聚合：诱导中间相热稳定性
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
C. Guymon
中科院分区：
文献类型：
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作者：
D. Mccormick;K. D. Stovall;C. Guymon
纳米结构聚合物由于其在从超滤膜到催化载体的应用范围内的潜在用途而引起重大兴趣。迄今为止，许多研究集中于使用形成溶致液晶（LLC）的小分子量表面活性剂作为聚合模板或聚合反应性LLC以在聚合物中形成这种纳米结构。然而，由小分子量表面活性剂形成的LLC相本身既不热稳定也不机械稳定，通常使得难以在整个聚合过程中保持LLC结构。一类相对较新的表面活性剂分子，普朗尼克嵌段共聚物，可以提供增加的灵活性，在纳米结构的发展时，用作聚合模板。这项工作的重点是水溶性和油溶性单体在Pluronic溶致液晶中的光聚合。特别是，LLC顺序和单体分离行为对单体聚合速率的影响已被审查。
Nanostructured polymers are of significant interest due to their potential use in applications ranging from ultrafiltration membranes to catalysis supports. To date, much research has focused on using small molecular weight surfactants that form lyotropic liquid crystals (LLCs) as polymerization templates or polymerizing reactive LLCs to form such nanostructure in polymers. LLC phases formed from small molecular weight surfactants, however, are in and of themselves neither thermally nor mechanically stable, often rendering it difficult to preserve the LLC structure throughout polymerization. A relatively new class of surfactant molecules, Pluronic block copolymers, may afford increased flexibility in nanostructure development when used as polymerization templates. This work has focused on the photopolymerization of water and oil-soluble monomers in Pluronic lyotropic liquid crystals. In particular, the effect that LLC order and monomer segregation behavior has on monomer polymerization rate has been exami...