Aggregation Processes of a Weak Polyelectrolyte, Poly(allylamine) Hydrochloride

Bulletin of the Korean chemical society

KyungBae Kim¹  Young-Wook Choi¹  Daewon Sohn¹  Hoeil Chung¹  Jaejung Park¹ 

关键词: Flocculation;    Homogeneity parameter;    Polyelectrolyte;    Probe charge effect;    pH dependence;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Poly(allylamine) hydrochloride is a weak cationic polyelectrolyte that exhibits different aggregation properties at different solution pH values and aging times. Specifically, after several days aging in a pH 3 buffer, less than 1 mg/mL poly(allylamine) hydrochloride became turbid, and the hydrodynamic radius increased with a single diffusion mode. However, the hydrodynamic radius did not change at high concentrations. The dynamic processes of polymer aggregations at different pH values were verified by a light scattering and zeta-potential apparatus. The major interaction was caused by the capturing of counterions by the polyelectrolyte, which generates electrostatic, hydrophobic and cation-�? interactions.

【 授权许可】

Unknown