The temperature effect on electrokinetic properties of the silica-polyvinyl alcohol (PVA) system

被引：43

作者：

Wisniewska, Malgorzata ^{[1
]}

机构：

[1] Marie Curie Sklodowska Univ, Fac Chem, Dept Radiochem & Colloids Chem, PL-20031 Lublin, Poland

来源：

COLLOID AND POLYMER SCIENCE | 2011年 / 289卷 / 03期

关键词：

Polyvinyl alcohol; Silica; Polymer conformation; Zeta potential; Slipping plane; Temperature influence; ADSORPTION; INTERFACE; POLYELECTROLYTE; DISPERSANT; STABILITY;

D O I：

10.1007/s00396-010-2341-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The influence of polyvinyl alcohol (PVA) adsorption on the structure of the diffuse layer of silica (SiO(2)) in the temperature range 15-35 A degrees C was examined. The microelectrophoresis method was used in the experiments to determine the zeta potential of the solid particles in the absence and presence of the polymer. The adsorption of PVA macromolecules causes the zeta potential decrease in all investigated SiO(2) systems. Moreover this, decrease is the most pronounced at the highest examined temperature. Obtained results indicate that the conformational changes of adsorbed polymer chains are responsible for changes in electrokinetic properties of silica particles. Moreover, the structure of diffuse layer on the solid surface with adsorbed polymer results from the following effects: the presence of acetate groups in PVA chains, the blockade of silica surface groups by adsorbed polymer and the shift of slipping plane due to macromolecules adsorption.

引用

页码：341 / 344

页数：4

共 10 条

[1] Investigation of the influence of the polyvinyl alcohol adsorption on the electrical properties of Al2O3-solution interface, thickness of the adsorption layers of PVA [J].

Chibowski, S ;

Paszkiewicz, M ;

Krupa, M .

POWDER TECHNOLOGY, 2000, 107 (03) :251-255

[2] A review of polymeric dispersant stabilisation of titania pigment [J].

Farrokhpay, Saeed .

ADVANCES IN COLLOID AND INTERFACE SCIENCE, 2009, 151 (1-2) :24-32

[3] Influence of temperature on stability of aqueous alumina slurry containing polyelectrolyte dispersant [J].

Guo, LC ;

Zhang, Y ;

Uchida, N ;

Uematsu, K .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1997, 17 (2-3) :345-350

[4] Adsorption of cationic polyelectrolyte at the solid/liquid interface and dispersion of nanosized silica in water [J].

Liufu, SC ;

Xiao, HN ;

Li, YP .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2005, 285 (01) :33-40

[5] POLYETHYLENEGLYCOL ADSORPTION AT THE TIO2-H2O INTERFACE - DISTORTION OF IONIC STRUCTURE AND SHEAR PLANE POSITION [J].

MPANDOU, A ;

SIFFERT, B .

COLLOIDS AND SURFACES, 1987, 24 (2-3) :159-172

[6] Temperature influence of nonionic polyethylene oxide and anionic polyacrylamide on flocculation and dewatering behavior of kaolinite dispersions [J].

Mpofu, P ;

Addai-Mensah, J ;

Ralston, J .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2004, 271 (01) :145-156

[7]

Napper D.H., 1983, Polymeric Stabilization of Colloidal Dispersions

[8] Polymeric surfactants in disperse systems [J].

Tadros, Tharwat .

ADVANCES IN COLLOID AND INTERFACE SCIENCE, 2009, 147-48 :281-299

[9] Influences of polyacrylic acid adsorption and temperature on the alumina suspension stability [J].

Wisniewska, M. .

POWDER TECHNOLOGY, 2010, 198 (02) :258-266

[10] The structure of electrical double layer of silica in the presence of polyvinyl alcohol (PVA) at different temperatures [J].

Wisniewska, Malgorzata .

MATERIALS LETTERS, 2010, 64 (14) :1611-1613

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