Effect of Heat Treatment on Formaldehyde Emission in Particleboard

Year 2018, Volume: 14 Issue: 1, 45 - 54, 31.07.2018

Hasan Öztürk , Aydın Demir , Gürsel Çolakoğlu

Abstract

Heat treatment was
applied without addition of chemicals harmful to human and environmental health,
which are considered as an alternative to the impregnation process has many
advantages and disadvantages for the wood based panel products. Formaldehyde
has been linked to human health and environmental problems during and after
manufacturing. Many studies are applied to reduce the formaldehyde emission. Because
of the different applications of heat treatment, it has not been found in these
studies. In this study, the effects of heat treatment on the formaldehyde
emission rate released on the surfaces of beech (Fagus orientalis Lipsky.) three-layer
particleboard were investigated. For this purpose, three groups were formed
according to different time and temperature of heat treatment. After heat
treatment, the lower, upper and middle layers of panels in the groups were
separated then the formaldehyde emission rates from these layers were
determined and compared with the control groups were not applied heat treatment.
Consequently, the formaldehyde emission rates from the particleboard varied by layer
(the lower, upper and middle) with heat treatment. The formaldehyde molecules
in the upper layers treated at 150^°C flowed from the hot side to the cold side. The
formaldehyde emission rates in the heat-treated layers decreased with the time
of treatment.

Keywords

Formaldehyde emission, Particleboard, Heat treatment, Moleculer conductivity

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