Giant wormlike rubber micelles |
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| Authors: | YY Won HT Davis FS Bates |
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| Institution: | Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA. |
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| Abstract: | A low molecular weight poly(ethyleneoxide)-poly(butadiene) (PEO-PB) diblock copolymer containing 50 weight percent PEO forms gigantic wormlike micelles at low concentrations (<5 percent by weight) in water. Subsequent generation of free radicals with a conventional water-based redox reaction leads to chemical cross-linking of the PB cores without disruption of the cylindrical morphology, as evidenced by cryotransmission electron microscopy and small-angle neutron scattering experiments. These wormlike rubber micelles exhibit unusual viscoelastic properties in water. |
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