Volatile
organic compound and formaldehyde emissions from Populus davidiana
wood treated with low molecular weight
urea-formaldehyde
resin
Jing-Xian Wang,
Jun Shen*, Cheng-Shuai Lei and Qi Feng
College of
Material Science and Engineering, Northeast Forestry University, Harbin -150
040, China
*Corresponding
Author E-mail: shenjunr@126.com
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Publication
Data
Paper received:
24 April 2014
Revised received:
16 June 2014
Accepted:
30 June 2014
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Abstract
Populus
davidiana wood was usually impregnated with low molecular weight
thermosetting resins to improve its physical and mechanical properties.
However, volatile organic compounds (VOCs) and formaldehyde emitted from
treated wood have lead to poor indoor air quality (IAQ). The trends of VOC
and formaldehyde emissions as a function of the weight percent gain (WPG)
factor were mainly investigated in this work. Aldehydes and alkanes were the
predominant compositions indentified in the VOC emissions, although low
amount of ketones, terpenes and alcohols were also found. With the increase
in WPG, VOC and formaldehyde concentrations improved. However, their
concentration began to decrease when WPG was over 44.06% (VOC) and 36.35%
(formaldehyde), respectively. The modulus of elasticity (MOE) of untreated
and treated wood at different WPG levels was detected. It showed that
treatment of wood with UF resin significantly improved the mechanical
properties. Therefore, it is probably helpful to comprehensively analyze
correlations among environmental performance, mechanical performance and
processing costs.
Key
words
Formaldehyde,
IAQ, Impregnation, Populus davidiana wood, VOC
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