Disordered network state in hydrated block-copolymer surfactants

Sumeet Jain, Xiaobo Gong, L. E. Scriven, Frank S. Bates

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


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.

Original languageEnglish (US)
Article number138304
JournalPhysical review letters
Issue number13
StatePublished - 2006


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