Dynamic Behavior and Mass Transport in Polyacrylic Acid Gel by Dynamic Light Scattering
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 (fc), monomer concentration (Cm) and temperature of the gels have significant influences on its dynamic behavior and mass transport in the gels. The increase of fc 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 Dk in the gels is decreased. So even if for small molecules, the Dk also is influenced.
Polyacrylic acid gel、dynamic light scattering、mass transport、diffusion
13
O6 ;O4
国家自然科学基金
2004-01-08(万方平台首次上网日期,不代表论文的发表时间)
共4页
448-451