Ordered Assembly of Triblock Copolymer on Air-water Interface

Abstract

Abstract: Sulfonated hydrogenated styrene-butadiene-styrene triblock copolymer(S-SEBS) was prepared by reaction of hydrogenated styrene-butadiene-styrene triblock copolymer(SEBS) with acetic anhydride and sulphuric acid.The assembly of S-SEBSon air-water interface was studied by using Langmuir film balance.Langmuir-Blogett(LB) film of S-SEBS was prepared and investigated by atomic force microscopy (AFM) in non-contact mode.The aggregations of S-SEBSin solution and in LBfilms were studied by fluorescence spectroscopy by using pyrene as fluorescence probe.The experimental results show that the ordered 2D and 3D-nanostructures composed of amphiphilic nanospheres have been obtained on the air-water interface.Apossible mechanism for the formation of the nanostructures is proposed.

Key words: S-SEBS, Langmuir-Blogett film, Nanostructures, Fluorescence probe

CLC Number:

O631

TrendMD:

WANG Gang, WEI Li, HONG Xia, WANG Da-Yang, YANG Wen-Sheng, LIU Feng-Qi, LI Tie-Jin, BAI Yu-Bai. Ordered Assembly of Triblock Copolymer on Air-water Interface[J]. Chem. J. Chinese Universities, 2002, 23(5): 937.

References

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