Dynamic and equilibrium swelling of biodegradable starch-based superabsorbent polymers

• Tipo: Artigo em Revista Científica Internacional
• Data: 2008

Autores

Maria do Pilar Gonçalves (Autor) FEUP; J.M.P.Q. Delgado (Autor) FEUP; R. O. Nasser (Autor) FEUP; M. Vázquez da Silva (Autor) FEUP; Cristina Andrade (Autor) Outra

Revista

Título: Defect and Diffusion Forum

Vol. 273-276

Páginas: 126-131

ISSN: 1012-0386

Editora: Trans Tech Publications Ltd

Indexação

ISI Proceedings

ISI Web of Science

Scopus

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

Outras Informações

DOI: 10.4028/www.scientific.net/DDF.273-276.126

Abstract (EN): A series of biodegradable superabsorbent polymers (SAP's) based on starch grafted with acrylic acid (AA) and crosslinked with N,N'-methylenebisacrylamide (MBIS) were obtained. The parameters that define SAP's properties, such as starch type, amount of initiator, acrylic acid and crosslinker concentrations, and degree of neutralization were varied. The dynamic swelling was interpreted in terms of both a simple power of time equation and a more detailed model based on a coupled diffusion-relaxation mechanism. The diffusivity coefficients calculated from diffusion-relaxation model were compared with the microimages obtained by optical microscopic

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6