Effect of polyvinylpyrrolidone on rheology of aqueous SiC suspensions with polyethylene glycol as binder

被引：12

作者：

Xiao, Chunxia ^{[1
]}

Gao, Lei ^{[1
]}

Lu, Mingjing ^{[1
]}

Chen, Han ^{[1
]}

Guo, Lucun ^{[1
]}

机构：

[1] Nanjing Univ Technol, Coll Mat Sci & Engn, Nanjing 210009, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2010年 / 368卷 / 1-3期

关键词：

Rheology; Dispersion; Binders; SiC; Suspensions; ALUMINA SUSPENSIONS; DISPERSANT; STABILITY; POLYELECTROLYTE; POLYACRYLATE; PYRROLIDONE); ELECTROLYTE; COPOLYMER; BEHAVIOR; SUCROSE;

D O I：

10.1016/j.colsurfa.2010.07.013

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 effect of polyvinylpyrrolidone (PVP) on rheology of aqueous SiC suspensions with polyethylene glycol (PEG) as binder was investigated. Results showed that in presence of PEG as binder, suspensions with addition of PVP at proper dosages resulted in better dispersion in comparison with conventional dispersant polyacrylic acids (PAA). As the total content of dispersants was fixed. PVP and PEG co-existing in the suspensions obtained lower viscosity than those added separately, and suspensions can be well dispersed in both neutral and alkaline conditions. The molecular weight of binder PEG showed no significant effect on the rheology of suspensions. Furthermore, the dispersion of SiC suspensions can be influenced by the addition modes due to synergistic effect between PEG and PVP. The association between them through intermolecular hydrogen bonding adsorbing on the particle surfaces provided enhanced steric hindrance and thus led to the system stability. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：53 / 57

页数：5

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