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Effect of sodium chloride on association behavior of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymer in aqueous solutions
Alternative TitleJ. Colloid Interface Sci.
Su, YL; Wei, XF; Liu, HZ
2003-08-15
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN0021-9797
Volume264Issue:2Pages:526-531
AbstractThe effect of sodium chloride (NaCl) upon the thermally induced association behavior of poly(ethylene oxide)-poly(propylene oxide)poly(ethylene oxide) (PEO-PPO-PEO) block copolymer, Pluronic P103, has been investigated using pyrene fluorescence spectroscopy. The critical micellization temperature (CMT) of Pluronic P103 in aqueous solution is decreased by the addition of NaCl. The standard enthalpy and entropy of micellization for Pluronic P103 in water are increased in the presence of small amounts of NaCl, but further addition of NaCl decreases the standard enthalpy and entropy of micellization. The I-1 / I-3 ratio of pyrene in aqueous Pluronic P103 solutions at temperature below the CMT decreases with increases of NaCl concentration, which is related to the decrease of PPO solubility. The decrease in polarity of the PPO shifts the CMT toward lower temperature. (C) 2003 Elsevier Inc. All rights reserved.; The effect of sodium chloride (NaCl) upon the thermally induced association behavior of poly(ethylene oxide)-poly(propylene oxide)poly(ethylene oxide) (PEO-PPO-PEO) block copolymer, Pluronic P103, has been investigated using pyrene fluorescence spectroscopy. The critical micellization temperature (CMT) of Pluronic P103 in aqueous solution is decreased by the addition of NaCl. The standard enthalpy and entropy of micellization for Pluronic P103 in water are increased in the presence of small amounts of NaCl, but further addition of NaCl decreases the standard enthalpy and entropy of micellization. The I-1 / I-3 ratio of pyrene in aqueous Pluronic P103 solutions at temperature below the CMT decreases with increases of NaCl concentration, which is related to the decrease of PPO solubility. The decrease in polarity of the PPO shifts the CMT toward lower temperature. (C) 2003 Elsevier Inc. All rights reserved.
KeywordPeo-ppo-peo Block Copolymer Sodium Chloride Fluorescence Spectroscopy Micellization Thermodynamics
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/S0021-9797(03)00472-7
URL查看原文
Indexed BySCI
Language英语
WOS KeywordANGLE NEUTRON-SCATTERING ; DIFFERENTIAL SCANNING CALORIMETRY ; TRIBLOCK COPOLYMER ; MICELLAR STRUCTURE ; FTIR SPECTROSCOPY ; AGGREGATION BEHAVIOR ; FLUORESCENCE PROBE ; POTASSIUM FLUORIDE ; PROPYLENE-OXIDE ; ETHYLENE-OXIDE
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000184940400030
Citation statistics
Cited Times:52[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5280
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Young Scientist Lab Separat Sci & Engn, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Su, YL,Wei, XF,Liu, HZ. Effect of sodium chloride on association behavior of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymer in aqueous solutions[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2003,264(2):526-531.
APA Su, YL,Wei, XF,&Liu, HZ.(2003).Effect of sodium chloride on association behavior of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymer in aqueous solutions.JOURNAL OF COLLOID AND INTERFACE SCIENCE,264(2),526-531.
MLA Su, YL,et al."Effect of sodium chloride on association behavior of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymer in aqueous solutions".JOURNAL OF COLLOID AND INTERFACE SCIENCE 264.2(2003):526-531.
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