Affiliation:
1. South China Advanced Institute for Soft Matter Science and Technology School of Emergent Soft Matter South China University of Technology Guangzhou 510640 China
2. Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of Technology Guangzhou 510640 China
3. Guangdong Marubi Biotechnology Co., Ltd. No 92 Banhe Road, Huangpu District Guangzhou 510700 China
Abstract
AbstractThe dynamic behaviors of polyzwitterions, poly(4‐((3‐methacrylamidopropyl) dimethylammonio) butane‐1‐sulfonate) (PSBP), are investigated using dynamic light scattering, small angle X‐ray scattering, and rheology. The findings reveal two relaxation modes, including a fast and a slow mode, which are observed in both solution state and gel‐like state, with varying polyzwitterion concentration (CP) and NaCl concentration (CNaCl). As CP and CNaCl increasing, a slower slow mode and a faster fast mode are observed. The fast mode corresponds to the diffusion of chains, while the slow mode arises from chain aggregations. In solutions, the slow mode is dominated by the diffusion of chain aggregations. However, in the gel‐like state, the “cage network” traps aggregations more densely, leading to their dynamic behavior being dominated by enhanced topological entanglements and ionic interactions. This difference highlights the unique nature of the slow relaxation mode between concentrated solution and gel‐like state, arising from changes in the average distance between chain aggregations resulting from increased CP and CNaCl concentrations.
Funder
National Natural Science Foundation of China
Subject
Materials Chemistry,Polymers and Plastics,Organic Chemistry