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	Long-tailed spherical aggregates formed from aba triblock copolymer by changing the properties of selective solvent
	Zhu, JT; Yu, HZ; Jiang, W
刊名	Polymer
	2005-11-28
卷号	46期号:25页码:11962-11968
关键词	Amphiphilic block copolymer Micelles Selective solvent
ISSN号	0032-3861
DOI	10.1016/j.polymer.2005.10.043
通讯作者	Jiang, w()
英文摘要	A convenient method of tuning aggregate morphologies from amphiphilic block copolymer by adding second selective solvent is introduced in this paper. some novel aggregate morphologies, i.e. hierarchical vesicles (and compound spherical micelles) with one or more tails, were formed by introducing a second selective solvent for core-forming blocks into the poly(4-vinyl pyridine)-b-polystyrene-b-poly(4-vinyl pyridine) aba amphiphilic block copolymer/co-solvent/water systems. addition of selective solvent (toluene) for core-forming blocks (ps blocks) has significant effect on the aggregate morphologies from the amphiphilic triblock copolymer. the aggregate morphologies changed from spheres to rods, long tailed solid large compound spheres, and to long tailed hierarchical vesicles by adding 0.5. 10 and 30 wt% of toluene to the organic solvent, respectively. there exists all aggregate morphological transition of the long tailed hierarchical vesicles to long tailed solid spheres by decreasing the content of toluene in the organic solvent mixture. the tails disappeared, and irregular vesicular and spherical structures were formed when the toluene content was 20 wt%. the toluene addition is expected to increase the stretching of the core-forming blocks (ps), and to modify the interfacial tension of core-corona interface, which are the main reasons for the aggregate morphology transition. to the best of our knowledge, these tailed vesicles and spherical morphologies have not been found in block copolymer aggregates system lip to now. (c) 2005 elsevier ltd. all rights reserved.
WOS关键词	AMPHIPHILIC BLOCK-COPOLYMERS ; INDUCED MORPHOLOGICAL-CHANGES ; DIBLOCK COPOLYMERS ; DILUTE-SOLUTION ; MULTIPLE MORPHOLOGIES ; AQUEOUS-SOLUTION ; TERNARY-SYSTEM ; TO-ROD ; MICELLES ; WATER
WOS研究方向	Polymer Science
WOS类目	Polymer Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000233733700092
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2377618
专题	中国科学院大学
通讯作者	Jiang, W
作者单位	Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Grad Sch, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Zhu, JT,Yu, HZ,Jiang, W. Long-tailed spherical aggregates formed from aba triblock copolymer by changing the properties of selective solvent[J]. Polymer,2005,46(25):11962-11968.
APA	Zhu, JT,Yu, HZ,&Jiang, W.(2005).Long-tailed spherical aggregates formed from aba triblock copolymer by changing the properties of selective solvent.Polymer,46(25),11962-11968.
MLA	Zhu, JT,et al."Long-tailed spherical aggregates formed from aba triblock copolymer by changing the properties of selective solvent".Polymer 46.25(2005):11962-11968.

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