QQ客服 官方微博 反馈留言

	Morphological transition of aggregates from aba amphiphilic triblock copolymer induced by hydrogen bonding
	Zhu, JT; Yu, HZ; Jiang, W
刊名	Macromolecules
	2005-08-23
卷号	38期号:17页码:7492-7501
ISSN号	0024-9297
DOI	10.1021/ma0510744
通讯作者	Jiang, w()
英文摘要	The hydrogen-bonding-induced aggregate morphological transition of the triblock copolymer poly(4-vinylpyridine)(43)-b-polystyrene(366)-b-poly(4-vinylpyridine)43 (p4vp-b-ps-b-p4vp) in dilute solution was studied by introduction of a surfactant (pentadecylphenol, i.e., pdp) into the solution. the p4vp-b-ps-b-p4vp triblock copolymer exhibits spherical aggregates in 1 wt % of the surfactant (pdp)-free solution. however, the aggregate morphologies changed from short rods to networks and looped structures and then to vesicles and compound vesicles by increasing pdp content at the same copolymer concentrations to the pdp-free solutions. the striking feature is that a trace amount of pdp (molar ratio of 4vp/pdp = 1000) addition can change the aggregate morphologies to wormlike morphologies. the nature of the influence that pdp exercise over the copolymer aggregates was determined by comparing the results with those obtained for the addition of the m-cresol (without the long tail of linear alkyl) and pentadecylbenzene (without hydroxyl). the interactions of both the hydrophobic chain and the hydrogen bonding of the pdp headgroup with the block copolymer molecules affect the architecture of the copolymer aggregates. hydrogen bonding weakens the interaction among the corona-building blocks, and hydrophobic chains of the pdp insert into the core of the aggregates, leading to the increases of the core dimension of the aggregates. the latter effect is more important on the morphological transition, which has been proved in experiment. using the hydrogen bonds of block copolymers with small molecular amphiphiles opens up the possibility of reaching a certain fraction to produce a desired aggregate morphology, representing another tool for manipulation of these nanostructures.
WOS关键词	SODIUM DODECYL-SULFATE ; ACID) BLOCK-COPOLYMERS ; DIBLOCK COPOLYMERS ; DILUTE-SOLUTION ; POLYMER BLENDS ; DRUG-DELIVERY ; LENGTH SCALES ; MICELLES ; VESICLES ; WATER
WOS研究方向	Polymer Science
WOS类目	Polymer Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000231274100039
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2378142
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. Morphological transition of aggregates from aba amphiphilic triblock copolymer induced by hydrogen bonding[J]. Macromolecules,2005,38(17):7492-7501.
APA	Zhu, JT,Yu, HZ,&Jiang, W.(2005).Morphological transition of aggregates from aba amphiphilic triblock copolymer induced by hydrogen bonding.Macromolecules,38(17),7492-7501.
MLA	Zhu, JT,et al."Morphological transition of aggregates from aba amphiphilic triblock copolymer induced by hydrogen bonding".Macromolecules 38.17(2005):7492-7501.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。