Author:
AUGUSTINA SARAH,DWIANTO WAHYU,RAHANDI LUBIS MUHAMMAD ADLY,DAMAYANTI RATIH,SUDARWOKO ADI DANANG,MALIK JAMALUDIN,WAHYUDI IMAM,DARMAWAN WAYAN,GERARDIN PHILIPPE,MARBUN SARI DELVIANA,ISODA HIROSHI
Abstract
This research deals with low molecular weight-phenol formaldehyde (LMW–PF) impregnation on sepetir (Sindora spp), nyatoh (Palaquium spp.), and pisang putih (Mezzettia spp.) woods to determine the effect of different anatomical structure on weight percent gain and dimensional stability improvement. The wood samples were impregnated using LMW–PF solutions with 7, 8, 9, 10, and 11% of concentrations (w/w), vacuum-pressured (–98 kPa, 15 min, 350 kPa, 4 h), and re-immersed in 80°C for 3 h. According to the findings, LMW–PF impregnation reduced coefficient of swelling by 9.64–29.95%, and increased anti-swelling efficiency by 12.24–29.91%. Additionally, the water absorption and thickness swelling reduced by 2.43–38.75% and 15.94–34.21%, respectively, indicating the improvement of dimensional stability. Microscopy and NIR analysis revealed the presence and reaction of LMW–PF within porous wood matrix. The effect of diverse anatomical structures caused complexity on LMW–PF impregnation. Sepetir-treated wood with fewer anatomical barriers resulted in better dimensional stability improvement than others.
Publisher
Pulp and Paper Research Institute
Subject
General Materials Science,Forestry
Cited by
1 articles.
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