有机改性硅藻土对聚乙酸乙烯酯乳液吸附性能及其动力学的研究

doi:10.3969/j.issn.0253-2417.2014.06.002

Abstract

Abstract: The kieselguhr was modified by lignin-based cationic surfactant which was obtained from the Mannich reaction. Modified organic kieselguhr exhibited an excellent adsorption of dissolved and colloidal substances (DCS). In this paper, polyvinylacetate (PVAc) was chosen as the simulacrum of stickies. The effects of PVAc dosages, adsorption time and temperature on adsorption were discussed. Meanwhile, kinetic and thermodynamic parameters were obtained. Correlation coefficient of kinetic model, R² were all beyond 0.99; the thermodynamic parameters ΔS, ΔH were -61.39 J/mol and -12.03 kJ/mol, respectively. The adsorption of PVAc on organic kieselguhr matched with the Langmuir model. The higher temperature was positive for the adsorption process. The adsorption process obeyed the pseudo-second-order kinetic model, and belonged to physical type.

Key words: lignin-cation surfactant, organic kieselguhr, polyvinyl acetate (PVAc), adsorption

CLC Number:

MAO Cui-ping, WU Shu-bin. Adsorption Property of Organically Modified Kieselguhr on Polyvinylacetate[J]. Chemistry and Industry of Forest Products, 2014, 34(6): 8-12.

References

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Adsorption Property of Organically Modified Kieselguhr on Polyvinylacetate

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