Construction of Continuous Porous Organogels, Hydrogels, and Bicontinuous Organo/Hydro Hybrid Gels from Bicontinuous Microemulsions
Construction of Continuous Porous Organogels, Hydrogels, and Bicontinuous Organo/Hydro Hybrid Gels from Bicontinuous Microemulsions
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DOI：
10.1021/ma901624p
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发表时间：
2010-01
期刊：
影响因子：
5.5
通讯作者：
Shintaro Kawano;Daisuke Kobayashi;Shun Taguchi;M. Kunitake;Taisei Nishimi
中科院分区：
文献类型：
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作者：
Shintaro Kawano;Daisuke Kobayashi;Shun Taguchi;M. Kunitake;Taisei Nishimi
通过双连续微乳液（BME）的凝胶化制备了一类新型的独特的软凝胶。提出了三种可供选择的复合凝胶体系，即BME有机凝胶，水凝胶和有机/水杂化凝胶，通过BME溶液的水凝胶化和/或有机凝胶化制备。这些凝胶是自支撑的，水和油微相双连续共存，并固定在凝胶中。即使在“仅一侧”的凝胶化产物如BME有机凝胶和BME水凝胶中，没有胶凝剂的交替溶剂相也被宏观固定。通过CLSM和SEM观察证实了凝胶的微观结构。BME有机凝胶或水凝胶和BME杂化凝胶分别具有连续多孔结构和双网络结构。凝胶的介观结构显着依赖于凝胶化条件。结果表明，BME凝胶的分级结构是由三个协同速率因子之间的竞争所调控的：BME结构的固定化和BME的交联。
A new class of unique soft gels was produced by gelations of bicontinuous microemulsions (BME). Three alternative composite gel systems, namely BME organogel, hydrogel and an organo/hydro hybrid gel, prepared by hydrogelation and/or organogelation of BME solutions were proposed. These gels were self-supported, and aqueous and oil microphases bicontinuously coexisted and were immobilized in the gels. Even in “one side only” gelation products such as the BME organogel and the BME hydrogel, alternate solvent phases without gelator were also macroscopically immobilized. Microscopic structures of the gels were confirmed by CLSM and SEM observation. The BME organogels or hydrogels and BME hybrid gels showed continuous porous structures and double network structures, respectively. Mesostructures of the gels significantly depended on gelation conditions. It was found that the hierarchical structure of the BME gels was regulated by competition among three synergetic rate factors: immobilization of the BME structur...