Polymer Colloidal Complexes of Ionomers and Oil-Soluble Surfactants

最近的初步结果表明，在非极性介质中，磺化聚苯乙烯离聚体与油溶性表面活性剂之间会形成络合物，从而形成一种新型的非化学计量聚电解质-带相反电荷的表面活性剂络合物，可溶于一些低极性溶剂。建议的研究将致力于两个主题：离子单体与油溶性表面活性剂之间络合的研究以及这种络合物在非极性介质中的结构和性质的研究；新型非化学计量聚电解质-水溶性表面活性剂配合物的合成、结构和性能的研究。研究离子聚体和表面活性剂的化学结构及其初始聚集状态对络合和聚合体结构的影响，将为非极性介质中离子聚体与表面活性剂相互作用的定量建模提供依据。对聚集体进行表征的实验方法将包括粘度测定、沉降速度、动态和静态光散射以及x射线散射。差示扫描量热法、动态力学和介电弛豫法将用于确定这些配合物在非极性溶液和体中的性质。＊＊＊

9311658 MacKnight Recent preliminary results have demonstrated complex formation between sulfonated polystyrene ionomers and oil-soluble surfactants in non-polar media resulting in the formation of a new type of nonstoichiometric polyelectrolyte-oppositely charged surfactant complex which is soluble in some low-polarity solvents. The proposed research will be devoted to two subjects: an investigation of complexation between ionomers and oil-soluble surfactants and the study of the structure and properties of such complexes in non-polar media; and synthesis, investigation of structure and properties of novel nonstoichiometric polyelectrolyte-water soluble surfactant complexes with a slight excess of non-complexed polyelectrolyte ionic groups. The study of the influence of the chemical structure of ionomer and surfactant and their initial aggregation state on complexation and the structure of the aggregates will provide a basis for quantitative modeling of ionomer-surfactant interactions in non- polar media. The experimental approach to the characterization of the aggregates will include viscometry, sedimentation velocity, dynamic, and static light scattering as well as x-ray scattering. Differential scanning calorimetry, dynamic mechanical and dielectric relaxation will be used to determine properties for these complexes in non-polar solutions and in the bulk. ***