Zhang Chaoxing, Zhang Jianling, Li Wei, Feng Xiaoying, Hou Minqiang, Han Buxing
Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China.
J Colloid Interface Sci. 2008 Nov 1;327(1):157-61. doi: 10.1016/j.jcis.2008.07.046. Epub 2008 Aug 29.
The formation of micelles of Pluronic block copolymers in poly(ethylene glycol) (PEG) was studied using fluorescence, solubilization measurements, and frozen fracture electron microscopy (FFEM) methods at 40 degrees C. It was discovered that surfactants L44 (EO(10)PO(23)EO(10)), P85 (EO(26)PO(40)EO(26)), and P105 (EO(37)PO(56)EO(37)) can form micelles in PEG 200 (PEG with a nominal molecular weight of 200), and the critical micellization concentration (CMC) decreases with increasing molecular weight of the surfactants. The size of the micelles formed by these Pluronic block copolymers is in the range of 6-35 nm. The CMC values in PEG 200 are higher than those in aqueous solutions.
在40摄氏度下，使用荧光、增溶测量和冷冻断裂电子显微镜（FFEM）方法研究了普朗尼克嵌段共聚物在聚乙二醇（PEG）中胶束的形成。发现表面活性剂L44（EO(10)PO(23)EO(10)）、P85（EO(26)PO(40)EO(26)）和P105（EO(37)PO(56)EO(37)）可在PEG 200（标称分子量为200的PEG）中形成胶束，且临界胶束浓度（CMC）随表面活性剂分子量的增加而降低。这些普朗尼克嵌段共聚物形成的胶束尺寸在6 - 35纳米范围内。PEG 200中的CMC值高于水溶液中的CMC值。
