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The influence of electrolytes on the diffusion properties of polystyrene colloidal particles in dense suspensions is measured by means of phase-modulated fiber optic low-coherence dynamic light scattering. In our experiments, both NaCl and BaCl2 are used as electrolytes. Experiment results show that the diffusion coefficients of the polystyrene colloidal particles increase with the increasing of ion concentration and ion valence when the concentration of electrolyte is below 0.01mol/L and the temperature keeps constant. The diffusion coefficients obtained experimentally show good agreement with the diffusion coefficients obtained by using the Stern model.
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Keywords:
- measurement /
- electrolyte /
- dense suspension /
- low-Coherence dynamic light scattering
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[18] Gu L Y, Xu S H, Sun Z W 2011 Acta Phys. Sin. 60 126402 (in Chinese) [顾凌云, 徐升华, 孙祉伟 2011 物理学报 60 126402]
[19] Li Z H, Gong Y J, Wu D, Sun Y H, Wang J, Liu Y, Dong B Z 2001 Acta Phys. Sin. 50 1128 (in Chinese) [李志宏, 巩雁军, 吴东, 孙予罕, 王俊, 柳义, 董宝中 2001 物理学报 50 1128]
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[1] Zhang Y T, L T 2008 Colloid and Interface Chemistry (Beijing: China Textile and Apparel Press) pp178–182 (in Chinese) [张玉亭, 吕彤 2008 胶体与界面化学 (北京: 中国纺织出版社) 第178–182页]
[2] Yang T, He D H, Zhang P L, Ma H R 2005 Acta Phys. Sin. 54 5937 (in Chinese) [杨涛, 何冬慧, 张磐兰, 马红孺 2005 物理学报 54 5937]
[3] Liu Q S, Yang L G, Su J 2013 Acta Phys. Sin. 62 144702 (in Chinese) [刘全生, 杨联贵, 苏洁 2013 物理学报 62 144702]
[4] Outhwaite C W, Bhuiyan L B 1986 J. Chem. Phys. 84 3461
[5] Yu Y X, Wu J, Gao G H 2004 J. Chem. Phys. 120 7223
[6] Yu Y X, Wu J, Gao G H 2004 Chinese J. Chem. Eng. 12 688
[7] Wang K, Yu Y X, Gao G H 2008 J. Chem. Phys. 128 185101
[8] Jin L, Yu Y X, Gao G H 2006 J. Colloid Interface Sci. 304 77
[9] Yu Y X, Tian A W, Gao G H 2005 Phys. Chem. Chem. Phys. 7 2423
[10] Ju Y Y, Zhang Q M, Gong Z Z, Ji G F 2013 Chin. Phys. B 22 083101
[11] Asad A, Wu J T 2011 Chin. Phys. B 20 106601
[12] Li Q, Pu X Y 2013 Acta Phys. Sin. 62 094206 (in Chinese) [李强, 普小云 2013 物理学报 62 094206]
[13] Bian F, Zhang X Z, Wang Z H, Wu Q, Hu H, Xu J J 2008 Chin. Phys. Lett. 25 4463
[14] Xia H, Pang R Y, Zhang R, Miao C X, Wu X Y, Hou X S, Zhong C 2012 J. Colloid Interface Sci. 376 322
[15] Heinen M, Holmqvist P, Banchio A J, Nagele G 2010 J. Appl. Cryst. 43 970
[16] Banchio A J, Nagele G 2008 J. Phys. Chem. 128 104903
[17] Xia H, Chen Z Q, Li F S, Lin X, Xiao Y Y, Huang H, Li Q L 2010 Acta Optica Sinica 30 2257 (in Chinese) [夏辉, 陈智全, 李富石, 林旭, 肖元元, 黄昊, 李青林 2010 光学学报 30 2257]
[18] Gu L Y, Xu S H, Sun Z W 2011 Acta Phys. Sin. 60 126402 (in Chinese) [顾凌云, 徐升华, 孙祉伟 2011 物理学报 60 126402]
[19] Li Z H, Gong Y J, Wu D, Sun Y H, Wang J, Liu Y, Dong B Z 2001 Acta Phys. Sin. 50 1128 (in Chinese) [李志宏, 巩雁军, 吴东, 孙予罕, 王俊, 柳义, 董宝中 2001 物理学报 50 1128]
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