Three acrylpimaric acid polyglycol esters (APAPG) with different molecular weight were successfully prepared. The surface properties of three esters were investigated by surface tension and fluorescence techniques. The critical micelle concentrations (CMC) were detected. Reorientation theory was proposed to describe the adsorption behavior and the conformational changes of these surfactant molecules at the air-water interface. With increasing ester concentration the molar fraction of solvent decreased and that of surfactant molecules increased. The adsorption amount of state 1 presented unimodal shape and adsorption amount of state 2 presented sigmoid with the growth of П. The free energy of adsorption is more negative than that of micellization, thus the surfactant molecules adsorb on the surface firstly and then form micelles after saturation adsorption.

成功制备了三种不同分子量的丙烯酸丙三酸酯聚乙二醇酯（APAPG）。通过表面张力和荧光技术研究了三种酯的表面性质。检测到临界胶束浓度（CMC）。提出了重取向理论来描述这些表面活性剂分子在空气-水界面的吸附行为和构象变化。随着酯浓度的增加，溶剂的摩尔分数降低，而表面活性剂分子的摩尔分数增加。随着П的增长，状态1的吸附量呈单峰形，状态2的吸附量呈S形。。吸附的自由能比胶束的负能大得多，因此表面活性剂分子首先吸附在表面，然后在饱和吸附后形成胶束。