Moch. Syamsul Ma'arif, Resza Tania Putri, Khairul Anam
The aim of this study was to determine the effect of adhesive on tensile strength and bending strength of adhesive joints on balsa wood by varying the type of bio-based adhesive. Bio-based adhesive is very potential as a substitute for synthetic-based adhesive because of its biodegradability and non-toxic. In this research, natural adhesive was applied to specimen of balsa wood to make joint. With varied bio-based adhesives from rubber tree sap, jackfruit tree sap and breadfruit tree sap, the joined balsa wood then subjected to mechanical test. In this study, tensile testing and bending testing were conducted to determine the tensile strength and bending of balsa wood that has been joined using bio-based adhesives. The results of the research show that the variation of bio-based adhesives have effect on the strength of joined balsa wood. Since varied bio-based adhesive has different adhesive characteristics so that the tensile and bending strength of each variant which mainly caused by different binding ability between bio-based adhesive on the surfaces of balsa wood. Also, analysis of failure on join was carried out after tensile and bending tests to examine the characteristic of failure. From tensile test, the value of tensile strength from the highest one is rubber tree sap bio-based adhesive, then jackfruit sap bio-based adhesive and the lowest was breadfruit tree bio-based adhesive sap. While the results of bending testing give the highest value for adhesive rubber tree sap, then jackfruit bio-based adhesive sap and the lowest was breadfruit tree sap. This was caused primarily by the ability of each adhesive to perform good bonding on the surface of balsa wood which governed primarily by its viscosity and pH values. © 2019 UTHM Publisher. All rights reserved.
Mechanical Engineering Department, Brawijaya University, Jl. Mayjend. Haryono no. 167, Malang, 65145, Indonesia
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