Surface properties of polymer adsorbed zirconia nanoparticles

被引：27

作者：

Wang, J ^{[1
]}

Gao, L ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

NANOSTRUCTURED MATERIALS | 1999年 / 11卷 / 04期

关键词：

D O I：

10.1016/S0965-9773(99)00326-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polyethylenimine (PEI) dispersed zirconia (3mol% yttria doped) aqueous suspensions were prepared and surface characteristics of PEI/ZrO2 system were studied. Adsorption isotherm of PEI on ZrO2 nanoparticles was a high affinity type and the optimum concentration of dispersant was about 1 dwb% (dry-weight-basis) of ZrO2. pH range with positive surface potential of ZrO2 was enbroaded and isoelectric point (IEP) of as synthesized powder was shifted to pH 10.5. Hydrogen bonding was proposed as the dominant mechanism of the adsorption process within the pH range studied and surface bond structure of nanoparticles was influenced by the polymer adsorbate between 300 and 400 cm(-1) in FTIR spectra. Auger electron spectroscopy (AES) investigation also confirmed that Zr peaks were affected by the polymer adsorbate and dramatic alternation of peak intensity was observed at 94 and 120 eV, respectively. (C)1999 Acta Metallurgica Inc.

引用

页码：451 / 457

页数：7

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[2]

[Anonymous], 1994, SURFACTANT SCI SER

[3]

Briggs D., 1983, Practical Surface Analysis by Auger and X-ray Photoelectron Spectroscopy

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