.png){kind=icon}
返回
Polyelectrolyte-gelatin complexation: Light-scattering study
.png){kind=icon}
PRE
AI
DOI：10.1021/ma961915u.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Complex formation between negatively charged polyelectrolytes and a net negatively charged polyampholyte (gelatin) has been characterized by light scattering. The two polyanions studied are sodium poly(styrenesulfonate) (NaPSS) and sodium poly(2-acrylamido-2-methylpropanesulfonate)(NaPAMS). The molecular weights of the single polyelectrolyte chains NaPSS and NaPAMS increase 20- and 15-fold, respectively, upon saturation with gelatin. Despite such molecular weight increases, the radii of gyration of the complexes were found to be only slightly larger (similar to 15%) than those of the corresponding parent polyelectrolytes. Increasing negative Values for the second virial coefficients were observed upon saturation of gelatin on the polyanion chains, indicating increasing interchain attraction. Both the stoichiometries and sizes of the complexes decrease monotonically with pH. At a constant pH, the complex stoichiometry peaks around 0.01 N NaAc. These results suggest that electrostatic interaction is the main driving force for complexation in these systems. Polyampholyte molecules are polarized in the electric field of a polyelectrolyte chain. This polarization-induced attraction is believed to be the main mechanism of complexation. Charge density of the polyanion is suggested to be an important factor for determining its extent of gelatin binding.
Keyword:
POLY(DIMETHYLDIALLYLAMMONIUM CHLORIDE)
DEPENDENCE
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
5.2
论文数:
3.7W
被引数:
9.4W
机构
暂无机构信息
引用论文
.png){kind=icon}
分享收藏Isolated Secondary Deposit in a Terminal Phalanx in a Case of Squamous-Cell Carcinoma of the Lung
PREAI
分享收藏
查看更多内容