DYNAMIC LIGHT SCATTERING INVESTIGATION OF GELATION IN ALGINATE AQUEOUS SYSTEM
Zuo Ju1,2, An Yingli1, Zhao Xiguang2, Liang Dehai2, He Binglin1(The State Key Laboratory of Functional Polymeric Materials for Adsorption and Separation1, Department of Chemistry2, Nankai University, Tianjin)
Dynamic laser light scattering was used to investigate the gelation of AG aqueous (1 mg/mL) by dialysing in 0.1 mol/L CaCl2 aqueous system. The average decay rates (linewidth) Γ decreased pronouncedly during the gelation and the lg plots of β1/2g(1)(τ) vs τ were nonlinear, which indicated complex motion models in this aqueous system, where g(1)(τ) and τ were normalized electric field autocorrelation function and delay time, respectively. Finally, the plot of characteristic average relaxation time τc (=Γ-1) vs dialysing time t was also given, which described the kinetics process of this gelation quantitatively.
【CateGory Index】： O631