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Utilize este identificador para citar ou criar um link para este item: http://acervodigital.unesp.br/handle/11449/66944
Título: 
Rheological properties of tin oxide suspensions
Autor(es): 
Instituição: 
  • Universidade Federal de São Carlos (UFSCar)
  • Universidade Federal da Paraíba (UFPB)
  • Universidade Estadual Paulista (UNESP)
ISSN: 
0955-2219
Resumo: 
The rheological properties of tin oxide slurries were studied experimentally and theoretically. The deflocculants used were ammonium polyacrilate (PAA) and the copolymer poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) (PVB-PVA-PVAc), in water and ethanol, respectively. The amount of deflocculant was optimized for different solid contents by means of viscosity measurements. In spite of the high stability of PVB-dispersed slurries, a high solid concentration was not obtained. On the other hand, a slurry with a 56.4 vol.% of solids was attained when PAA was used. A theoretical study of the adsorption of PAA in its dissociated (basic solution) and non-dissociated (acidic solution) forms on SnO 2 (110) is presented. This analysis was made by means of the PM3 method using a large cluster Sn 15O 28 for the surface model. The calculated adsorption energy is larger for the ionized PAA than for the non-ionized form, indicating that alkaline slurries favor PAA adsorption on the SnO 2 surface. © 2002 Elsevier Science Ltd. All rights reserved.
Data de publicação: 
1-Ago-2002
Citação: 
Journal of the European Ceramic Society, v. 22, n. 8, p. 1297-1306, 2002.
Duração: 
1297-1306
Palavras-chaves: 
  • Adsorption
  • Deflocculants
  • Modelling-adsorption
  • Rheology
  • SnO 2
  • Ammonium compounds
  • Ethanol
  • Slurries
  • Vinyl resins
  • Viscosity measurement
  • Water
  • Adsorption energy
  • Tin compounds
  • adsorption
  • rheology
  • suspension
  • tin oxide
Fonte: 
http://dx.doi.org/10.1016/S0955-2219(01)00440-X
Endereço permanente: 
Direitos de acesso: 
Acesso restrito
Tipo: 
outro
Fonte completa:
http://repositorio.unesp.br/handle/11449/66944
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