백합나무 판재의 VOCs 및 Aldehydes 방출특성

Abstract

백합나무 판재를 벽판재로 이용하기 위해 백합나무의 생재와 건조재에 대한 휘발성유기화합물(VOCs)과 알데히드류 방출 특성을 검토하였다. VOCs 및 formaldehyde를 포함한 aldehyde류의 방출량 측정은 다중이용시설 등의 실내공기질 관리법에 공시된 20 <TEX>${\ell}$</TEX> Chamber법에 따라 실시하였다. 백합나무의 생재 및 건조재에서는 30여 가지 이상의 VOCs가 검출되었다. 백합나무의 Total VOC 구성 비율 가운데 천연VOC (NVOC)의 비율은 11.1%로 다른 침엽수종과 비교하여 낮게 나타났다. 백합나무의 aldehyde류 분석 결과, 심재 및 변재에서 같은 3종(acetaldehyde, ketone, propionaldehyde)이 검출되었으며, formaldehyde의 방출량은 <TEX>$4.01{\mu}g/m^3$</TEX> 이하로 나타났다. m-Tolualdehyde의 경우 백합나무 건조재의 심재에서만 <TEX>$33.6{\mu}g/m^3$</TEX>의 방출량을 보였으며, 심재와 변재 모두 ketone의 방출량이 가장 높게 나타났다. 백합나무 특유의 역한 냄새는 acetaldehyde와 propionaldehyde와 기타 VOCs에 의한 것으로 추정된다. 건조한 백합나무에서는 휘발성이 강한 ketone의 방출량이 증가하였다. Based on fundamental properties and machining characteristics of Yellow poplar (Liriodendron tulipifera L.), it has well performance on machinability or workability, drying, and fine surface. Additionally, yellow poplar is light weight and has bright color with high performance of bending processing, so it could be used for furniture or artworks materials and wood-based panel materials. Recently, public attention has been focused on indoor air quality, and Ministry of environment drift more tight regulation on indoor air quality for an apartment house and public facility with the times. Construction materials has been assessed emission of volatile organic compounds (VOCs) and formaldehyde according to law (No.10789), so yellow poplar is also needed to assess these emission characteristics. Emission of VOC and aldehyde compounds from dry and green wood condition of yellow poplar were investigated with KS M 1998:2009. Based on results, more than 30 compounds were detected from yellow poplar, and lower NVOC (natural VOC) were emitted than AVOC (Anthropogenic VOC) and OVOC (other VOC). Formaldehyde emission was lower than <TEX>$5{\mu}g/m^3$</TEX> and acetaldehyde, ketone, and propionaldehyde were detected from yellow poplar. From dry yellow poplar, m-Tolualdehyde (<TEX>$33.6{\mu}g/m^3$</TEX>) was additionally detected while no detection of propionaldehyde. After drying process, amount of ketone emission increased significantly. The unique smell of yellow poplar may not only come from emission of acetaldehyde and propionaldehyde.