WETTABILITY OF THE SURFACE OF HEAT-TREATED JUVENILE TEAK WOOD ASSESSED BY DROP SHAPE ANALYZER

Juliana de Oliveira Lopes, Rosilei Aparecida Garcia, Alexandre Miguel do Nascimento

Abstract


This study investigated the effect of the heat treatment on the wettability of the surface of juvenile teak (Tectona grandis) wood assessed by drop shape analyzer. Heartwood and sapwood samples were heat-treated at 180 and 200ºC. Contact angle measurements were done every 5 s for 120 s using a
KRÜSS DSA100. Heartwood had lower wettability than sapwood. Heat treatment decreased the surface wettability of both heartwood and sapwood, especially in the wood treated at 200ºC. Heartwood had lower wettability than sapwood, even after heat treatment.

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