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采用含氢硅油(PHMS)、烯丙基聚醚(FB1000)与不同质量的丙烯酸十八酯(SA)反应制备了具有侧链结构的高分子表面活性剂(PSA)。利用FTIR、~1HNMR、GPC、表面张力仪、动态激光光散射仪(DLS)、荧光光谱仪(FLD)对产物的结构与溶液性质进行了测定。结果表明,随着SA用量的增加,聚合物越易聚集缔合形成胶束,粒径从71.40 nm增加到141.07 nm,粒度分散系数(PDI)增大至0.396,随着疏水基团的增加,溶液表面张力降低至24.20 m N/m,临界胶束质量浓度(CMC)降至0.49 g/L。荧光光谱表明,聚合物溶液浓度增大到一定值时,溶液中会形成疏水微区,第一、第三发射峰的比值(_I1/I_3)不断减小,达到临界缔合浓度(CAC)后,芘分子会增溶到胶束中I_1/I_3趋于稳定。破乳实验结果表明,聚合物PSA的破乳脱水率达93%。
Polymers with side chain structure (PSA) were prepared by the reaction of hydrogen silicone oil (PHMS), allyl polyether (FB1000) and stearyl acrylate (SA). The structure and solution properties of the product were characterized by FTIR, ~ 1HNMR, GPC, surface tension meter, dynamic laser light scattering (DLS) and fluorescence spectroscopy (FLD). The results showed that with the increase of SA content, the more the polymer aggregated to form micelles, the particle size increased from 71.40 nm to 141.07 nm, and the particle size distribution (PDI) increased to 0.396. With the increase of hydrophobic groups, The solution surface tension decreased to 24.20 m N / m, the critical micelle mass concentration (CMC) dropped to 0.49 g / L. Fluorescence spectra showed that when the concentration of the polymer solution was increased to a certain value, hydrophobic micro-domains were formed in the solution, and the ratio of the first and third emission peaks (_I1 / I_3) decreased continuously. After reaching the critical association concentration (CAC) , Pyrene molecules will solubilize the micelles I_1 / I_3 tends to be stable. Demulsification test results show that the polymer PSA demulsification dehydration rate of 93%.