Direct Measurement of Colloidal Interactions between Polyaniline Surfaces in a UV-Curable Coating Formulation: The Effect of Surface Hydrophilicity/Hydrophobicity and Resin Composition

被引：16

作者：

Jafarzadeh, Shadi ^{[1
]}

Claesson, Per M. ^{[1
,2
]}

Pan, Jinshan ^{[1
]}

Thormann, Esben ^{[1
,3
]}

机构：

[1] KTH Royal Inst Technol, Sch Chem Sci & Engn, Dept Chem, Div Surface & Corros Sci, SE-10044 Stockholm, Sweden

[2] SP Tech Res Inst Sweden, SE-11486 Stockholm, Sweden

[3] Tech Univ Denmark, Dept Chem, DK-2800 Lyngby, Denmark

来源：

LANGMUIR | 2014年 / 30卷 / 04期

基金：

瑞典研究理事会;

关键词：

ATOMIC-FORCE MICROSCOPE; SOLID-SURFACES; CONTACT ANGLES; MICA SURFACES; POLYMER MELTS; CALIBRATION; HYDRATION; PARTICLE; LIQUID;

D O I：

10.1021/la4035062

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The interactions between polyaniline particles and polyaniline surfaces in polyester acrylate resin mixed with 1,6-hexanediol diacrylate monomer have been investigated using contact angle measurements and the atomic force 2 microscopy colloidal probe technique. Polyaniline with different characteristics (hydrophilic and hydrophobic) were synthesized directly on spherical polystyrene particles of 10 pm in diameter. Surface forces were measured between core/shell structured polystyrene/polyaniline particles (and a pure polystyrene particle as reference) mounted on an atomic force microscope cantilever and a pressed pellet of either hydrophilic or hydrophobic polyaniline powders, in resins of various polymer:monomer ratios. A short-range purely repulsive interaction was observed between hydrophilic polyaniline (doped with phosphoric acid) surfaces in polyester acrylate resin. In contrast, interactions between hydrophobic polyaniline (doped with n-decyl phosphonic acid) were dominated by attractive forces, suggesting less compatibility and higher tendency for aggregation of these particles in liquid polyester acrylate compared to hydrophilic polyaniline. Both observations are in agreement with the conclusions from the interfacial energy studies performed by contact angle measurements.

引用

页码：1045 / 1054

页数：10