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Influence of Formula.ion a.d Hot-Pressing Conditions on the Performa.ce of Bio-Ba.ed Mola.ses a.hesive for Plywood

Journa. of Renewa.le Ma.eria.s 2024年第8期12卷 1383-1397页

作者： Sutia.a. J. syahfitri a. Kusuma. S.S. Herma.a. D. Sa.i R.K. Ha.im L. Ma.da.a.i E. Lubis M.a.R. Resea.ch Center for Bioma.s a.d Bioproducts National Research and Innovation Agency Cibinong 16911 Indonesia Forest Product Depa.tment Faculty of Forestry and Environment IPB University Bogor 16680 Indonesia Depa.tment of Forest Products Faculty of Forestry Universitas Sumatera Utara Medan 20155 Indonesia Resea.ch Colla.ora.ion Center for Bioma.s a.d Biorefinery BRIN and Universitas Padjadjaran Bandung 40600 Indonesia Depa.tment of a.ro-Industria. Technology Universitas Padjadjaran Bandung 40600 Indonesia

Mola.ses ca. serve a. a.na.ura. a.hesive for plywood a.d pa.ticleboa.d. However, severa. disa.va.ta.es rema.n, including lower dimensiona. sta.ility a.d low bonding strength compa.ed to other a.hesives. Therefore, modifica.ions a.e needed to use mola.ses a. a. a.hesive for plywood. This resea.ch a.ms to improve bio-ba.ed mola.ses (MO) a.hesive for plywood using citric a.id (Ca. a.hesive. In a.dition, this resea.ch a.ms to a.a.yze the effect of a.ding citric a.id a.d to investiga.e the optimum hot-pressing tempera.ure to produce the best qua.ity plywood. In the first sta.e, the mola.ses a.d citric a.id were combined in a.ra.io of 100:0, 75:25, 50:50, 25:75, 0:100 w/w%. Then, the second sta.e focuses on a.a.yzing the influences of pressing tempera.ure ba.ed on a. optimum first sta.e. The resea.ch demonstra.ed tha. the a.dition of Ca.a.tered the gela.ion time, solid content, visc-osity, a.d pH of the mola.ses a.hesives. In a.dition, the therma. properties of mola.ses a.hesives were cha.ged a.ter mixing with citric a.id. These phenomena.indica.e cha.ges in cha.a.teristics, such a. the curing of a.hesive. Overa.l, the cha.a.teristics of plywood showed a.stea.y improvement a. the Ca.ra.io increa.ed but revea.ed a.significa.t decline for the 25:75 MO-Ca.ra.io. By ra.sing the pressing tempera.ure from 180°C to 200°C, the qua.ity of plywood wa. effectively improved. The plywood tha. wa. bonded using a.hesives with a.50:50 MO-Ca.ra.io exhibited superior mecha.ica. properties a.d improved dimensiona. sta.ility compa.ed to the plywood bonded solely with MO. Furthermore, the optima. mecha.ica. a.d physica. properties resulted in plywood bonded with a.50:50 MO-Ca.ra.io when subjected to a.pressing tempera.ure of 200°C. The Therma. a.d FTIR mea.urements revea.ed tha. Ca.esta.lished ester bonds with both the MO a.d wood veneers. In conclusion, the mecha.ica. cha.a.teristics of plywood were improved, while ma.nta.ning its excellent dimensiona. sta.ility. © 2024 The a.thors.

关键词： Citric a.id composite mola.ses plywood pressing tempera.ure

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