Re-assembly behaviors of polystyrene-b-poly(acrylic acid) micelles
Zhang, Yang1; Xiao, Xing1; Zhou, Jian-jun1; Wang, Lei1; Li, Zhi-bo1; Li, Lin1; Shi, Lin-qi2; Chan, Chi-Ming3
Source PublicationPOLYMER
AbstractThe re-assembly behaviors of spherical micelles of the polystyrene-b-poly(acrylic acid) (PS-b-PAA) diblock copolymer in different solvent mixtures were investigated using dynamic light scattering, transmission electron microscopy and atomic force microscopy. Depending on the nature of the solvent, PS-b-PAA micelles re-assembled from spheres to nanorings in toluene or to necklace-like aggregates in water induced by solvent evaporation. Systematic studies suggested that the re-assembly behaviors on a neutral surface are strongly correlated with the micellar surface components, the solvent polarity and the chain length of the micelle corona of the solvated blocks. We proposed that the formation of nanorings from PS-b-PAA micelles in toluene is mainly induced by the dewetting process of the solvent, while the necklace-like structure arises from the hydrogen bonding interactions among the partially dissociated PAA units. (C) 2009 Elsevier Ltd. All rights reserved.
KeywordBlock Copolymers Micelles Re-assembly
Indexed BySCI
WOS IDWOS:000272284100036
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Document Type期刊论文
Corresponding AuthorLi, Lin
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
2.Nankai Univ, Key Lab Funct Polymer Mat, Minist Educ, Inst Polymer Chem, Tianjin 300071, Peoples R China
3.Hong Kong Univ Sci & Technol, Dept Chem & Biomol Engn, Hong Kong, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Yang,Xiao, Xing,Zhou, Jian-jun,et al. Re-assembly behaviors of polystyrene-b-poly(acrylic acid) micelles[J]. POLYMER,2009,50(25):6166-6171.
APA Zhang, Yang.,Xiao, Xing.,Zhou, Jian-jun.,Wang, Lei.,Li, Zhi-bo.,...&Chan, Chi-Ming.(2009).Re-assembly behaviors of polystyrene-b-poly(acrylic acid) micelles.POLYMER,50(25),6166-6171.
MLA Zhang, Yang,et al."Re-assembly behaviors of polystyrene-b-poly(acrylic acid) micelles".POLYMER 50.25(2009):6166-6171.
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