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Citation: HE Dongqin, FANG Kuanjun. Studies on the Conductivity of Cationic Latexes and Its Adsorption on Cotton Fabrics by Conductometric Titration[J]. Chinese Journal of Applied Chemistry, ;2014, 31(5): 581-588. doi: 10.3724/SP.J.1095.2014.30389 shu

Studies on the Conductivity of Cationic Latexes and Its Adsorption on Cotton Fabrics by Conductometric Titration

HE Dongqin ,
FANG Kuanjun ^,

1.
Laboratory of Fiber Materials and Modern Textiles, The Growing Base for State Key Laboratory, College of Chemical and Environmental Engineering, Qingdao University, Qingdao 266071, China

Corresponding author: FANG Kuanjun,
Received Date: 1 August 2013
Available Online: 16 September 2013
Fund Project: 国家自然科学基金(51173086) (51173086)山东省自主创新成果转化重大专项资助(2012ZHZX1A0914) (2012ZHZX1A0914)山东省自然科学基金(Y2008B62) (Y2008B62)生态纺织教育部重点实验室(东华大学)开放课题(ECO-ZD-2011-0011) (东华大学)开放课题(ECO-ZD-2011-0011)

The electrostatic interaction,and adsorption of cationic latex on the surface of cotton fibers have been extensively studied because of their practical and theoretical importance.In this paper,conductometric titration was used to determine the chloride ion content at the surface of cationic latex and to analyze the conductivity of cationic latex.Moreover,the adsorption isotherm of cationic latex on cotton fabrics was explored deeply.Within the range of 0.05~0.3×10^-8 mol/L,a good linear relationship between the concentration(c_p) of latex and the conductivity(Λ) was obtained(Λ=8.0913c_p+1.8093,R²=0.9986).The limiting molar conductivity of cationic colloidal nucleus,calculated according to the electrolyte theory,was not a constant at 25℃.The limiting molar conductivity decreased with the increase of the latex's concentration.Finally,the adsorption isotherm of cationic latex on cotton fabrics was fitted to the Langmuir adsorption isotherm model.
- conductometric titration,
- cationic latex particles,
- molar conductivity,
- adsorption isotherm model
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