Lunagariya Jignesh, Kumar Nadavala Siva, Asif Mohammad, Dhar Abhishek, Vekariya Rohit L
Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China.
Department of Chemical Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia.
Polymers (Basel). 2017 Jul 19;9(7):285. doi: 10.3390/polym9070285.
The non-ionic triblock copolymer, Pluronic F127, has been selected to observe its interaction with ionic liquids (ILs) in aqueous solutions by using DLS, surface tension, and viscosity measurements. The Critical Micelle Concentration (CMC) of F127 increased with the addition of ILs, which appeared logical since it increases the solubility of PPO (and PEO) moiety, making it behaves more like a hydrophilic block copolymer that is micellized at a higher copolymer concentration. The results from DLS data showed good agreement with those obtained from the surface tension measurements. Upon the addition of ILs, the tendency in micellar size reduction was demonstrated by viscosity results, and therefore, intrinsic viscosity decreased compared to pure F127 in aqueous solution. The results were discussed as a function of alkyl chain length and anions of imidazolium based ILs.
已选用非离子三嵌段共聚物普朗尼克F127，通过动态光散射（DLS）、表面张力和粘度测量来观察其在水溶液中与离子液体（ILs）的相互作用。随着离子液体的加入，F127的临界胶束浓度（CMC）增加，这似乎合乎逻辑，因为它增加了聚丙二醇（PPO）（和聚环氧乙烷，PEO）部分的溶解度，使其表现得更像一种亲水性嵌段共聚物，在更高的共聚物浓度下形成胶束。DLS数据结果与表面张力测量结果吻合良好。加入离子液体后，粘度结果表明胶束尺寸有减小的趋势，因此与水溶液中的纯F127相比，特性粘度降低。根据咪唑基离子液体的烷基链长度和阴离子对结果进行了讨论。
