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Citation: CHEN Guo, YAO Shan-Jing, FANG Bai-Shan, PENG Yi-Qiang. Effect of Additives on Characteristics of Polyelectrolyte Complex Membrane and Exploration of Related Mechanism[J]. Acta Physico-Chimica Sinica, ;2007, 23(09): 1415-1420. doi: 10.3866/PKU.WHXB20070920 shu

Effect of Additives on Characteristics of Polyelectrolyte Complex Membrane and Exploration of Related Mechanism

1.
Fujian Province Key Laboratory of Industrial Biotechnology, Huaqiao University, Quanzhou 362021, Fujian Province, P. R. China; Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, P. R. China

Received Date: 29 March 2007
Available Online: 13 July 2007

The membrane characteristics of capsules composed of sodiumcellulose sulfate (NaCS) and poly[dimethyl(diallyl)ammonium chloride] (PDMDAAC) were investigated under the condition of introducing other molecules. The small molecules, soluble polymers, soluble polyions, and salts of small molecule were individually added into polyanion (NaCS) solution to check their effects on capsule formation. The membrane thickness and mechanical intensity of capsules were studied under the condition of different concentration of additives. Meanwhile the effects of additives on viscosity and zeta potential of dilute NaCS solution were investigated. The results indicated that the effects of additives on the membrane characteristics could be judged by viscosity and zeta potential variation of dilute polyelectrolytes with addition of other molecules. The effect of additives on the reaction between polyelectrolytes was analyzed, and an explanation correlating the characteristics of capsule to the properties of dilute solution was proposed according to solution lattice theory.
- Polyelectrolyte; PEC membrane; Microcapsule; Zeta potential; Reduced viscosity
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