Data/hora: 05/06/2024 18:10:15

Biblioteca(s): | Embrapa Agricultura Digital.
Data corrente: | 21/11/2012
Data da última atualização: | 08/01/2020
Autoria: | OSAWA, C. C.; SOUZA, E. F. de; CASTRO, A. de.
Afiliação: | CARLA CRISTIANE OSAWA, IQ/Unicamp, CNPTIA; ELIZABETH FÁTIMA DE SOUZA, PUC Campinas; ALEXANDRE DE CASTRO, CNPTIA.
Título: | Colloidal stability by adsorption of Ni2+ or Fe3+ cations on hairy latex particles.
Ano de publicação: | 2012
Fonte/Imprenta: | Journal of Dispersion Science and Technology, v. 33, n. 2, p. 171-176, 2012.
Idioma: | Inglês
Conteúdo: | Polymer latexes have many industrial applications and are considered as models of colloids. The DLVO theory has been widely used to describe the colloidal stability. The adsorption of Ni2+ and Fe3+ cations on polyvinyl acetate latex particles in the presence of NO3À counterions, and the colloidal stability of the system were studied. The obtained results indicate that Ni2+ or Fe3+ cations were adsorbed on the latex particles' hairy layers, which also helped to prevent latex coagulation. The stability of the PVAc latex within highly concentrated ionic media shows a deviation from the behavior described by the classical DLVO theory.
Palavras-Chave: | Adsorção de cations; Isoterma de Langmuir.
Thesagro: | Latex.
Categoria do assunto: | X Pesquisa, Tecnologia e Engenharia
Registro original: | Embrapa Agricultura Digital (CNPTIA)
Exemplares: | CNPTIA - (16940-1) - UPC - AP - DD -  -  -  - DIS