Disordered network state in hydrated block-copolymer surfactants.
Disordered network state in hydrated block-copolymer surfactants.
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DOI：
10.1103/physrevlett.96.138304
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发表时间：
2006-04
影响因子：
8.6
通讯作者：
Sumeet Jain;X. Gong;L. Scriven;F. Bates
中科院分区：
文献类型：
--
作者：
Sumeet Jain;X. Gong;L. Scriven;F. Bates
聚（丁二烯-b-环氧乙烷）二嵌段共聚物的水合会产生各种有序和无序相，类似于表面活性剂和脂质的水相行为。通过低温扫描电子显微镜成像证实的小角度 X 射线散射测量揭示了聚合物成分的随机网络 (N) 形态和与有序圆柱体 (H1) 和片层 (L) 相关的中间水含量。这种自组装结构序列与某些水-油-表面活性剂微乳液的相行为惊人地相似。
Hydration of poly(butadiene-b-ethylene oxide) diblock copolymers leads to various ordered and disordered phases, analogous to the aqueous phase behavior of surfactants and lipids. Small-angle x-ray scattering measurements corroborated by cryogenic scanning electron microscopy imaging reveal a random network (N) morphology at polymer compositions and water content intermediate to those associated with ordered cylinders (H1) and lamellae (L). This sequence of self-assembled structures is strikingly similar to the phase behavior of certain water-oil-surfactant microemulsions.