GUO Chen; WANG Jing; LIANG Xiangfeng; ZHENG Lili; LIU Huizhou
Source Publicationscienceinchinaseriesbchemistry
AbstractEffect of bovine serum albumin (BSA) on the temperature-dependent association behavior of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) block copolymers was investigated using pyrene fluorescence spectroscopy. The critical micellization temperature (CMT) of pluronics in aqueous solution was increased by the addition of BSA. A closed association model was used to obtain the standard free energies (Delta G(0)), enthalpies (Delta H-0), and entropies (Delta S-0) of micellization. The standard enthalpy and entropy of micellization for pluronic polymers in water were decreased with an increase of the BSA content. The more PPO component in the pluronic polymer, the higher the changed values of micellization enthalpy and entropy. The hydrophobic part of the pluronics, PPO, was responsible for the interaction between pluronics and BSA. Hydrophobic interaction between PPO and BSA was correlated to the alternation of the PPO-PPO interaction by the addition of BSA, which would shift the CMT toward higher temperature and alter the thermodynamic parameters of micellization for pluronics in aqueous solutions.
Document Type期刊论文
First Author Affilication中国科学院过程工程研究所
Recommended Citation
GB/T 7714
GUO Chen,WANG Jing,LIANG Xiangfeng,et al. effectofbovineserumalbuminonthemicellizationofpolyethyleneoxidepolypropyleneoxidepolyethyleneoxideblockcopolymersinaqueoussolutionsbyfluorescencespectroscopy[J]. scienceinchinaseriesbchemistry,2006,49(6):541.
APA GUO Chen,WANG Jing,LIANG Xiangfeng,ZHENG Lili,&LIU Huizhou.(2006).effectofbovineserumalbuminonthemicellizationofpolyethyleneoxidepolypropyleneoxidepolyethyleneoxideblockcopolymersinaqueoussolutionsbyfluorescencespectroscopy.scienceinchinaseriesbchemistry,49(6),541.
MLA GUO Chen,et al."effectofbovineserumalbuminonthemicellizationofpolyethyleneoxidepolypropyleneoxidepolyethyleneoxideblockcopolymersinaqueoussolutionsbyfluorescencespectroscopy".scienceinchinaseriesbchemistry 49.6(2006):541.
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