Citation: Ju ZUO, Jian Feng HUANG, Ying Li AN, Fang Xing LI, Chang Ying ZHU, Li LIU, Zhi Guang ZHANG, Bing Lin HE. Dynamic Behavior and Mass Transport in Polyacrylic Acid Gel by Dynamic Light Scattering[J]. Chinese Chemical Letters, ;2002, 13(5): 448-451. shu

Dynamic Behavior and Mass Transport in Polyacrylic Acid Gel by Dynamic Light Scattering

1.
State Key laboratory of Functional Polymer Materials for Adsorption and Separation,;
2.
Chemistry Department, Nankai University, Tianjin 300071

Received Date: 21 August 2001

Fund Project: Projcct 29774011 was supported by Ihc National Natural Scicncc Foundation of China.

Dynamic behaviors on polyacrylic acid (PAA) gels and mass (small molecules) transports in the gels have been studied mainly by dynamic light scattering (DLS). The cross-linking degree (f_c), monomer concentration (C_m) and temperature of the gels have significant influences on its dynamic behavior and mass transport in the gels. The increase of f_c leads to decrease of the mesh sizes of the gels, thus the obstacle of the gels for mass transport is increased. As a result, small molecular diffusion D_k in the gels is decreased. So even if for small molecules, the D_k also is influenced.
- Polyacrylic acid gel,
- dynamic light scattering,
- mass transport,
- diffusion
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