Effects of sawdust and adhesive type on the properties of rice husk particleboards

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dc.contributor.authorOlupot, Peter Wilberforce
dc.contributor.authorMenya, Emmanuel
dc.contributor.authorLubwama, Festo
dc.contributor.authorSsekaluvu, Lawrence
dc.contributor.authorNabuuma, Betty
dc.contributor.authorWakatuntu, Joel
dc.date.accessioned2023-01-23T16:16:09Z
dc.date.available2023-01-23T16:16:09Z
dc.date.issued2022
dc.description.abstractThis study set out to investigate the effects of adhesive type, rice husk and sawdust proportions on the properties of composite particleboards. Specimens of 200 × 200 × 24 mm were made by blending 500 g of rice husks with each adhesive type at a mass ratio of 1:1. The rest of the specimens of similar dimensions were prepared with addition of sawdust in the range of 10–40 wt%, while maintaining the ratio of biomass particles to adhesive at 1:1. Three commercial synthetic adhesives Fevicol (FV), Ponal (PA) and woodfix (WF) were used. The particleadhesive mixtures were molded into a mat which was subsequently cold pressed at 10 MPa and left to dry in air. Density, water absorption (WA), linear expansion (LE), thickness swelling (TS), modulus of elasticity (MOE), modulus of rupture (MOR) and screw holding capacity of the specimens were evaluated. Adhesives were found to have over 42% solid content, with similar liquid constituents but in varying proportions. FTIR library search for the spectra of FV, PA and WF revealed correlations of 82.5%, 78.6% and 50.2%, respectively with polyvinylacetate. The developed boards had density 510–610 kg/m3, MOE 13–26 MPa, TS 9–31%, LE 3–7%. These properties suit them for furniture boards and sound proofing. The properties improved with increasing proportion of sawdust. FV and PA-bonded particleboards exhibited higher stability and strengths than WF-bonded particleboards due to higher concentrations of polyvinyl-acetate in the latter. Blending 40 wt% sawdust, 10 wt% rice husk with 50 wt% of either FV or PA showed better prospects.en_US
dc.identifier.citationOlupot, P. W., Menya, E., Lubwama, F., Ssekaluvu, L., Nabuuma, B., & Wakatuntu, J. (2022). Effects of sawdust and adhesive type on the properties of rice husk particleboards. Results in Engineering, 16, 100775. https://doi.org/10.1016/j.rineng.2022.100775en_US
dc.identifier.urihttps://doi.org/10.1016/j.rineng.2022.100775
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/7143
dc.language.isoenen_US
dc.publisherResults in Engineeringen_US
dc.subjectAdhesivesen_US
dc.subjectParticleboardsen_US
dc.subjectPropertiesen_US
dc.subjectRice husksen_US
dc.subjectSawdusten_US
dc.titleEffects of sawdust and adhesive type on the properties of rice husk particleboardsen_US
dc.typeArticleen_US
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