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Self-assembly kinetics of amphiphilic dendritic copolymers

Zhang, C., Fan, Y., Zhang, Y., Yu, C., Li, H., Chen, Y., Hamley, I. W. and Jiang, S. (2017) Self-assembly kinetics of amphiphilic dendritic copolymers. Macromolecules, 50 (4). pp. 1657-1665. ISSN 0024-9297

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To link to this item DOI: 10.1021/acs.macromol.6b02331

Abstract/Summary

The self-assembly process of amphiphilic dendritic copolymers(ADPs) with a hydrophilic core and a hydrophobic shell was investigated via laser light scattering. The self-assembly occurs via a fast step and a slow step with different relaxation times. At the critical micelle concentration (CMC), the fusion of small micelles results in the rapid increase of the micelle size in the fast step. The slow step is associated with equilibrium through the fission and fusion of the micelles. The micelle size increases with the unimer concentration, which leads to a lower micelle concentration. The lower micelle concentration makes the relaxation time of the fast step increase with increasing unimer concentration. However, the fusion of larger micelles at higher concentration is more efficient to increase micelle size. The fusion of small micelles with large micelles at higher concentration accelerates the approaching equilibrium of the micelles except for the fission and fusion of micelles. With the increasing degree of amidation (DA), the relaxation time in the fast step increases and in the slow step it decreases.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:70405
Publisher:American Chemical Society

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