Photostabilisation of wood using aromatic vinyl esters

Abstract

Thin wood veneers were esterified to different weight gains with vinyl benzoate, vinyl cinnamate or vinyl-4-T-butylbenzoate to graft aromatic groups to wood's molecular components. We hypothesised that Such modification would increase the resistance of wood to photodegradation. There was a linear relationship between the level of esterification of wood with vinyl benzoate and the photostability of the modified veneers exposed to natural weathering. Vinyl benzoate protected lignin and cellulose in wood from photodegradation at high weight gains (>30%) whereas modification of wood with vinyl-4-T-butylbenzoate provided no Such protection and vinyl cinnamate increased the photodegradation of wood. We provide an explanation for why these effects Occurred and discuss the implications of our findings, for the development of weather-resistant wood materials. (C) 2008 Elsevier Ltd. All rights reserved.

Keywords

Wood; Photostabilization; Chemical modification; Aromatic vinyl esters

Published in

Polymer Degradation and Stability
2009, Volume: 94, number: 2, pages: 151-157

UKÄ Subject classification

Organic Chemistry
Wood Science


Publication identifier

DOI: https://doi.org/10.1016/j.polymdegradstab.2008.11.013

Permanent link to this page (URI)

https://res.slu.se/id/publ/89707