| 荧光探针法研究PEO-PPO嵌段共聚物胶束的特性 |
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| 引用本文： | 顾新华,戴光松,吴世康.荧光探针法研究PEO-PPO嵌段共聚物胶束的特性[J].物理化学学报,1995,11(11):985-990. |
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| 作者姓名： | 顾新华 戴光松 吴世康 |
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| 作者单位： | Institute of Photographic Chemistry,Academia Sinica,Beijing 100101 |
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| 摘 要： | 利用十六烷基罗丹明Ｂ作为主要荧光探针，研究了水溶性嵌段共聚物Ｐｌｕｒｏｎｉｃ Ｆ－６８在水溶液中的胶束化行为，研究表明，Ｐｌｕｒｏｎｉｃ－Ｆ－６８形成胶束的监界胶束浓度与温度有极大关系，随温度的升高，其ＣＭＣ值急剧下降，并且温度对胶束的性质也有很大，影响温度升高可导致胶束的微观粘度增大，表现出很强的负粘－温效应，并发现引起这种负粘－温效应的主要原因是Ｐｌｕｒｏｎｉｃ Ｆ－６８分子中聚环氧乙烷（ＰＥ
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| 关 键 词： | 荧光探针 水溶性嵌段共聚物 胶束 |
| 收稿时间： | 1994-12-29 |
| 修稿时间： | 1995-05-05 |
A Study on the Properties of Micelle Formed by Ethyleneoxide-Propyleneoxide Copolymer with Fluorescent Probe Method |
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| Gu Xin-Hua,Dai Guang-Song,Wu Shi-Kang.A Study on the Properties of Micelle Formed by Ethyleneoxide-Propyleneoxide Copolymer with Fluorescent Probe Method[J].Acta Physico-Chimica Sinica,1995,11(11):985-990. |
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| Authors: | Gu Xin-Hua Dai Guang-Song Wu Shi-Kang |
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| Institution: | Institute of Photographic Chemistry,Academia Sinica,Beijing 100101 |
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| Abstract: | In this work, Cetyl Rhodamine B(CERB) was used as a main fluorescent probe in studying the micellization of Pluronic F-68 ((EO)78(PO)30(EO)78) in water. Results indicated that the critical micelle concentration of Pluronic F-68 was strongly dependent on the temperature, with the rise of temperature the CMC decresced. The miroviscosity of micelles formed was also affected by the temperature and increased with the temperature in range 25 ~ 42℃. This phenomenon was attributed to the contraction of PEO chain with the rise of temperature. Whereas the miroviscosity of the core of micelle which was formed by PPO chain decreased when temperature rised in range from 25℃ to 50℃. |
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| Keywords: | Fluorescent probe Watersoluble block copolymer Micelle |
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