Modifying wood with bio-polyesters: analysis and performance

Noël, Marion; Grigsby, W.; Vitkeviciute, I.; Volkmer, Thomas (2015). Modifying wood with bio-polyesters: analysis and performance International Wood Products Journal, 6(1), pp. 14-20. Taylor & Francis 10.1179/2042645314Y.0000000086

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Oligomers of lactic and glycolic acid (OLA, OGA) and poly(butylene succinate/adipate) (OBS, OBA) were impregnated and heated into wood for dimensional stabilisation. These bio-polyesters variously provide bulking and lumen filling treatments. Solvent extraction of treated wood showed that ca. 50% of the polymer remains in wood with in situ polymerisation evidenced by GPC. OGA readily penetrates the wood cell wall, which occurred only on heating OLA, whereas OBS/OBA was lumen filling with any cell wall penetration only evident after water soaking. Stability of OLA/OGA treated wood was improved, but did not withstand extended leaching, whereas OBS/OBA treated wood presented higher stability once leached. Bending resistance was influenced by OLA/OGA treatments, but original MOE values were recovered after leaching. Overall, the results show the bio-polyester treatment can confer specific properties of the modified wood to suit selected end use applications.

Item Type:	Newspaper or Magazine Article
Division/Institute:	School of Architecture, Wood and Civil Engineering
Name:	Noël, Marion; Grigsby, W.; Vitkeviciute, I. and Volkmer, Thomas
ISSN:	2042-6453
Publisher:	Taylor & Francis
Language:	English
Submitter:	Service Account
Date Deposited:	18 Dec 2019 12:56
Last Modified:	18 Dec 2019 12:56
Publisher DOI:	10.1179/2042645314Y.0000000086
ARBOR DOI:	10.24451/arbor.6072
URI:	https://arbor.bfh.ch/id/eprint/6072