Oil-in-Water Emulsion Templated and Crystallization-Driven Self Assembly Formation of Poly(L-lactide)-Polyoxyethylene-Poly(L-lactide) Fibers

doi:10.1021/acs.langmuir.7b02596

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	Oil-in-Water Emulsion Templated and Crystallization-Driven Self Assembly Formation of Poly(L-lactide)-Polyoxyethylene-Poly(L-lactide) Fibers
	Li, Chunyu 1; Liu, Rui 1; Xue, Qingbin 1; Huang, Yaping 2; Su, Yunlan 2; Shen, Qiang 1; Wang, Dujin 2
刊名	LANGMUIR
	2017-11-14
卷号	33 期号:45 页码:13060-13067
ISSN号	0743-7463
DOI	10.1021/acs.langmuir.7b02596
英文摘要	A molecular solution of an amphiphilic block copolymer may act as an oil phase by dispersing into an aqueous micellar system of small-molecular surfactant, forming oil-in-water (O/W) emulsion droplets. In this paper, an as-synthesized triblock copolymer poly(L-lactide) polyoxyethylene poly(L-lactide) (PLLA-PEO-PLLA) was dissolved in tetrahydrofuran (THF) and then added to an aqueous micellar solution of nonaethylene glycol monododecyl ether (AEO-9), forming initially coalescent O/W emulsion droplets in the size range of 35 nm-1.3 mu m. Along with gradual volatilization of THF and simultaneous concentration of PLLA-PEO-PLLA molecules, the amphiphilic copolymer backbones themselves experience solution-based self-assembly, forming inverted core corona aggregates within an oil-phase domain. Anisotropic coalescence of adjacent O/W emulsion droplets occurs, accompanied by further volatilization of THF. The hydrophilic block crystallization of core-forming PEOs and the hydrophobic chain stretch of corona-forming PLLAs together induce the intermediate formation of rod-like architectures with an average diameter of 300-800 nm, and this leads to a large-scale deposition of the triblock copolymer fibers with an average diameter of similar to 2.0 mu m. Consequently, this strategy could be of general interest in the self assembly formation of amphiphilic block copolymer fibers and could also provide access to aqueous solution crystallization of hydrophilic segments of these copolymers.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000415911700024
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/45039]
专题	中国科学院化学研究所
通讯作者	Shen, Qiang; Wang, Dujin
作者单位	1.Shandong Univ, Sch Chem & Chem Engn, Educ Minist, Key Lab Colloid & Interface Chem, Shan Da Nan Rd 27, Jinan 250100, Shandong, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Engn Plast, Zhongguancun North First St 2, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Chunyu,Liu, Rui,Xue, Qingbin,et al. Oil-in-Water Emulsion Templated and Crystallization-Driven Self Assembly Formation of Poly(L-lactide)-Polyoxyethylene-Poly(L-lactide) Fibers[J]. LANGMUIR,2017,33(45):13060-13067.
APA	Li, Chunyu.,Liu, Rui.,Xue, Qingbin.,Huang, Yaping.,Su, Yunlan.,...&Wang, Dujin.(2017).Oil-in-Water Emulsion Templated and Crystallization-Driven Self Assembly Formation of Poly(L-lactide)-Polyoxyethylene-Poly(L-lactide) Fibers.LANGMUIR,33(45),13060-13067.
MLA	Li, Chunyu,et al."Oil-in-Water Emulsion Templated and Crystallization-Driven Self Assembly Formation of Poly(L-lactide)-Polyoxyethylene-Poly(L-lactide) Fibers".LANGMUIR 33.45(2017):13060-13067.