AI Article Synopsis
- This study examined how different amounts of citric acid affect the durability and mechanical properties of rubberwood particleboard.
- Particleboards were made with varying citric acid contents (10, 15, and 20 wt%) and compared to a control made with urea formaldehyde (UF) resin.
- While citric acid-bonded boards had lower physical and mechanical properties than UF-bonded boards, they showed better resistance to fungal and termite damage, suggesting citric acid could be an eco-friendly alternative in particleboard production, though further improvements are needed.
Article Abstract
This study investigated the effects of different citric acid content on the physico-mechanical and biological durability of rubberwood particleboard. Particleboards with density of 700 kg/m were produced with three different citric acid contents, namely 10, 15 and 20 wt%. Particleboards made from 10 wt% urea formaldehyde (UF) resin were served as control for comparison purposes. FTIR analysis was carried out and the formation of ester linkages between -OH on cellulose and carbonyl groups of citric acid was confirmed. The peak intensity increased along with increasing citric content, which indicated that a higher amount of ester linkages were formed at higher citric acid content. Citric acid-bonded particleboard had inferior physical properties (water absorption and thickness swelling) and mechanical properties (internal bonding strength, modulus of rupture and modulus of elasticity) compared to that of the UF-bonded particleboard. However, the performance of particleboard was enhanced with increasing citric acid content. Meanwhile, citric acid-bonded particleboard displayed significantly better fungal and termite resistance than UF-bonded particleboard owing to the acidic nature of citric acid. It can be concluded that citric acid is a suitable green binder for particleboard but some improvement is needed during the particleboard production process.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7795821 | PMC |
| http://dx.doi.org/10.3390/polym13010098 | DOI Listing |
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