Performance of wood treated with prospective organic surface protectants upon outdoor exposure: FTIR spectroscopic analysis of weathered surfaces

C F Schauwecker; A G McDonald; Jeffrey J Morrell

doi:10.1515/hf-2011-0247

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Performance of wood treated with prospective organic surface protectants upon outdoor exposure: FTIR spectroscopic analysis of weathered surfaces

Journal article

Peer reviewed

Performance of wood treated with prospective organic surface protectants upon outdoor exposure: FTIR spectroscopic analysis of weathered surfaces

C F Schauwecker, A G McDonald and Jeffrey J Morrell

Holzforschung, Vol.67(2), pp.227-235

2013

DOI: https://doi.org/10.1515/hf-2011-0247

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Abstract

4,5-dichloro-2-n-octyl-3-isothiazolinone (DCOIT)

chromic acid

FTIR spectroscopy

hindered amine light stabilizer (HAL)

hydroxyphenyl bezotriazole

isothiazolone

lignin

loblolly pine

pinus taeda

UV stabilizers

water repellents

wax

weathering

wood surfaces

Visual appeal of wood is as important as its structural integrity in outdoor applications. Discoloration and checking of wood favor the utilization of alternative materials for outdoor cladding and decking. Lignin depolymerization is one of the critical processes leading to weathering. In the present paper, the potential of different classes of surface protection agents has been assessed on loblolly pine (P inus taeda) impregnated with water repellents, organic UV inhibitors, and an organic biocide. The treated samples were exposed to predetermined doses of solar radiation in Eastern Oregon, and the chemical changes occurring on the surfaces were evaluated by FTIR spectroscopy. After 1-year exposure, lignin loss was complete on all surfaces; however, some treatments provided longer term protection than others. Organic UV light inhibitors were most effective in this regard. A petroleumbased water repellent with a melting point of 54-58 °C also provided protection against lignin degradation.

Details

Title: Performance of wood treated with prospective organic surface protectants upon outdoor exposure: FTIR spectroscopic analysis of weathered surfaces
Authors: C F Schauwecker (Author) - Oregon State University, United States
A G McDonald (Author) - University of Idaho, United States
Jeffrey J Morrell (Author) - Oregon State University, United States
Publication details: Holzforschung, Vol.67(2), pp.227-235
Publisher: Walter de Gruyter GmbH & Co. KG
Date published: 2013
DOI: 10.1515/hf-2011-0247
ISSN: 0018-3830
Organisation Unit: University of the Sunshine Coast, Queensland; National Centre for Timber Durability and Design Life
Language: English
Record Identifier: 99450796102621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Forestry; Materials Science, Paper & Wood