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	Effect of acid on the aggregation of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymers
	Yang, Bin; Guo, Chen; Chen, Shu; Ma, Junhe; Wang, Jing; Liang, Xiangfeng; Zheng, Lily; Liu, Huizhou
刊名	JOURNAL OF PHYSICAL CHEMISTRY B
	2006-11-23
卷号	110期号:46页码:23068-23074
关键词	differential scanning calorimetry aqueous-solutions triblock copolymer micellar structure mesoporous silica micellization surfactants salts f127 poloxamer
ISSN号	1520-6106
其他题名	J. Phys. Chem. B
中文摘要	The acid effect on the aggregation of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymers EO20PO70EO20 has been investigated by transmission electron microscopy (TEM), particle size analyzer (PSA), Fourier transformed infrared, and fluorescence spectroscopy. The critical micellization temperature for Pluronic P123 in different HCl aqueous solutions increases with the increase of acid concentration. Additionally, the hydrolysis degradation of PEO blocks is observed in strong acid concentrations at higher temperatures. When the acid concentration is low, TEM and PSA show the increase of the micelle mean diameter and the decrease of the micelle polydispersity at room temperature, which demonstrate the extension of EO corona and tendency of uniform micelle size because of the charge repulsion. When under strong acid conditions, the aggregation of micelles through the protonated water bridges was observed.
英文摘要	The acid effect on the aggregation of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymers EO20PO70EO20 has been investigated by transmission electron microscopy (TEM), particle size analyzer (PSA), Fourier transformed infrared, and fluorescence spectroscopy. The critical micellization temperature for Pluronic P123 in different HCl aqueous solutions increases with the increase of acid concentration. Additionally, the hydrolysis degradation of PEO blocks is observed in strong acid concentrations at higher temperatures. When the acid concentration is low, TEM and PSA show the increase of the micelle mean diameter and the decrease of the micelle polydispersity at room temperature, which demonstrate the extension of EO corona and tendency of uniform micelle size because of the charge repulsion. When under strong acid conditions, the aggregation of micelles through the protonated water bridges was observed.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	DIFFERENTIAL SCANNING CALORIMETRY ; AQUEOUS-SOLUTIONS ; TRIBLOCK COPOLYMER ; MICELLAR STRUCTURE ; MESOPOROUS SILICA ; MICELLIZATION ; SURFACTANTS ; SALTS ; F127 ; POLOXAMER
收录类别	SCI
原文出处	://WOS:000242045900022
语种	英语
WOS记录号	WOS:000242045900022
公开日期	2013-10-24
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/3953]
专题	过程工程研究所_研究所（批量导入）
作者单位	Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Lab Separat Sci & Engn, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Yang, Bin,Guo, Chen,Chen, Shu,et al. Effect of acid on the aggregation of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymers[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2006,110(46):23068-23074.
APA	Yang, Bin.,Guo, Chen.,Chen, Shu.,Ma, Junhe.,Wang, Jing.,...&Liu, Huizhou.(2006).Effect of acid on the aggregation of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymers.JOURNAL OF PHYSICAL CHEMISTRY B,110(46),23068-23074.
MLA	Yang, Bin,et al."Effect of acid on the aggregation of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymers".JOURNAL OF PHYSICAL CHEMISTRY B 110.46(2006):23068-23074.

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