Adsorption of Polyampholytes

9730777 Rubinstein荷电聚合物由于其独特的性能和作为流变改性剂、分散助剂、稳定剂、胶凝剂、粘合剂等的技术重要性，最近引起了广泛的关注。 只带正电荷或负电荷的聚合物称为聚电解质。 两性聚电解质的净电荷，例如，蛋白质，是由水溶液的pH值。 长程库仑相互作用是这些聚合物系统的丰富行为和发展理论来描述它们的困难的原因。 虽然聚电解质及其与表面相互作用的连贯画面开始出现，两性聚电解质的理论描述远远落后。 特别是，没有令人满意的理论两性聚电解质吸附。 这样的理论是必要的了解由两性聚电解质稳定的胶乳颗粒的相互作用，蛋白质在细胞膜上的吸附，两性聚电解质与聚电解质的络合和相关问题的细节。 在目前的研究中，两性聚电解质在带电表面上吸附的解析和数值模型将被构建和求解。 解决的问题将包括：单一的两性聚电解质链的吸附，多链吸附，和两性聚电解质吸附动力学。 %带电聚合物由于其独特的性能和作为流变改性剂、分散助剂、稳定剂、胶凝剂、粘合剂等的技术重要性，最近引起了人们的广泛关注。两性聚电解质是携带正电荷和负电荷的聚合物。 只带正电荷或负电荷的聚合物称为聚电解质。 两性聚电解质的净电荷，例如，蛋白质，是由水溶液的pH值。 长程库仑相互作用是这些聚合物系统的丰富行为和发展理论来描述它们的困难的原因。 虽然聚电解质及其与表面相互作用的连贯图像开始出现，但聚两性电解质的理论描述却远远落后。 特别是，没有令人满意的理论两性聚电解质吸附。 这样的理论是必要的了解由两性聚电解质稳定的胶乳颗粒的相互作用，蛋白质在细胞膜上的吸附，两性聚电解质与聚电解质的络合和相关问题的细节。 在目前的研究中，两性聚电解质在带电表面上吸附的解析和数值模型将被构建和求解。 解决的问题将包括：单一的两性聚电解质链的吸附，多链吸附，和两性聚电解质吸附动力学。 ***

9730777 Rubinstein Charged polymers have recently attracted much attention due to their unique properties and their technological importance as rheology modifiers, dispersing aids, stabilizers, gelling agents, binders, etc. Polyampholytes are polymers carrying both positive and negative charges. Polymers carrying only positive or negative charge are called polyelectrolytes. The net charge of polyampholytes, e.g., proteins, is determined by the pH of the aqueous solution. Long-range Coulomb interactions are responsible for the rich behavior of these polymeric systems and for the difficulties in developing theories to describe them. While the coherent picture of polyelectrolytes and their interactions with surfaces is beginning to emerge, the theoretical description of polyampholytes is lagging far behind. In particular, there is no satisfactory theory of polyampholyte adsorption. Such a theory is necessary for understanding the details of interactions of latex particles stabilized by polyampholytes, adsorption of proteins on cell membranes, complexation of polyampholytes with polyelectrolytes and related problems. In the current research both analytical and numerical models of polyampholyte adsorption on charged surfaces will be constructed and solved. The problems addressed will include: the adsorption of a single polyampholyte chain, multi-chain adsorption, and the kinetics of polyampholyte adsorption. %%% Charged polymers have recently attracted much attention due to their unique properties and their technological importance as rheology modifiers, dispersing aids, stabilizers, gelling agents, binders, etc. Polyampholytes are polymers carrying both positive and negative charges. Polymers carrying only positive or negative charge are called polyelectrolytes. The net charge of polyampholytes, e.g., proteins, is determined by the pH of the aqueous solution. Long-range Coulomb interactions are responsible for the rich behavior of these polymeric systems and for the difficulties in developing theories to describe them. While the coherent picture of polyelectrolytes and their interactions with surfaces is beginning to emerge, the theoretical description of polyampholytes is lagging far behind. In particular, there is no satisfactory theory of polyampholyte adsorption. Such a theory is necessary for understanding the details of interactions of latex particles stabilized by polyampholytes, adsorption of proteins on cell membranes, complexation of polyampholytes with polyelectrolytes and related problems. In the current research both analytical and numerical models of polyampholyte adsorption on charged surfaces will be constructed and solved. The problems addressed will include: the adsorption of a single polyampholyte chain, multi-chain adsorption, and the kinetics of polyampholyte adsorption. ***