Dynamic and equilibrium swelling of biodegradable starch-based superabsorbent polymers

• Type: Article in International Conference Proceedings Book
• Date: 2008

Authors

Nasser, RO (Author) Other; M. Vázquez da Silva (Author) FEUP; J.M.P.Q. Delgado (Author) FEUP; Maria do Pilar Gonçalves (Author) FEUP; Andrade, CT (Author) Other

Conference proceedings International

Title: DIFFUSION IN SOLIDS AND LIQUIDS III

Pages: 126-131

3rd International Conference on Diffusion in Solids and Liquids

Algarve, PORTUGAL, JUL 04-06, 2007

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 2 Citations

Other information

Authenticus ID: P-005-5YS

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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6