Oxidized xanthan gum cross-linked with chitosan as adhesive for cork

• Type: Poster in an International Conference
• Date: 2014-09-10

Authors

Diana Paiva (Author) FEUP; Margarida M. S. M. Bastos (Author) FEUP; Magalhães, F. D. (Author) FEUP

Conference International

Chempor - 12th International Chemical and Biological Engineering Conference

Porto, Portugal, 10-12/09/2014

Associated Projects

LEPAE/CEFT - RL1 - Chemical Engineering: Process Optimization and Energy Conversion

GlueCork - SI IDT - 23043/2011 - Rolhas técnicas de cortiça de origem 100% natural

Other information

Subject: Oxidized xanthan gum, natural adhesives, agglomerated cork, chitosan

Abstract (EN): Oxidized xanthan gum at two different aldehyde contents was synthesized to produce a natural adhesive when cross-linked with chitosan. Due to the reactivity of the aldehyde groups present on oxidized xanthan gum, the cross-linking with chitosan is more efficient creating a high quality and water resistant adhesive. The modification of xanthan gum was characterized by FTIR and 1H NMR, and the degree of oxidation was determined by the hydroxylamine hydrochloride method. The combination of oxidized xanthan gum with chitosan revealed better adhesive properties with less swelling than individual polymers or the mixture of xanthan gum (no oxidation) with chitosan. This adhesive was optimized to be used in cork laminates.

Language: English

Type (Professor's evaluation): Scientific