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Citation: HAN Li-Na, FAN Yun-Ge, WANG Chun-Hong, SHI Rong-Fu. Carboxylic Function of PVA Resins with and Adsorption of L-lysine on the Carboxylic Resins[J]. Chinese Journal of Applied Chemistry, ;2007, 24(3): 296-300. shu

Carboxylic Function of PVA Resins with and Adsorption of L-lysine on the Carboxylic Resins

1.
Institute of Polymer Chemistry, Nankai University, Tianjin 300071

Corresponding author: FAN Yun-Ge,
Received Date: 13 March 2006
Available Online: 6 June 2006
Fund Project: 天津市自然科学基金项目(05YFMJC00400) (05YFMJC00400)

Polyvinyl alcohol(PVA) matrix resins were obtained from the suspension polymerization of vinyl acetate triallyl isocyanurate followed by alcoholysis. Three carboxylic resins with hydrophilic PVA matrix containing hydroxyl groups were prepared by the introduction of diverse carboxylic groups such as carboxylic methyl, succinic and p-phthalic acid. The conversion rates of hydroxyl groups determined by the chemical titrimetric analysis for the 3 matrix resins were 20.0%, 47.6%, 57.2%, respectively. The adsorption characteristics of L-lysine in aqueous solution on the three carboxylic and PVA resins were measured by the static adsorption isotherms. The equilibrium adsorption data were fitted to Freundlich adsorption isotherm model to evaluate the model parameters. The result shows that the adsorption isotherm data can be satis-factorily fitted with the Freundlich equation within a range of concentration 2.0~80.0 mmol/L at 298 K. At the same time, the result of dynamic adsorption of L-lysine on PVA-SuA with the initial concentration under 50.90 mmol/g shows that a pseudo-second-order equation can be used to interpret the kinetic curve and the correlation is good.
- polyvinyl alcohol(PVA) matrix resin,
- carboxylic,
- adsorption,
- L-lysine
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