Experimental assessment of hemp shiv and green adhesives to produce a biocomposite material

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Multidisciplinary Digital Publishing Institute (MDPI)

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Abstract

This study investigates the utilization of innovative green composites made from hemp shiv, a waste by-product of hemp cultivation, with the aim of promoting sustainability within the construction industry. The manufacturing method involve the application of pressure in a mold to create the samples. These materials were produced using an environmentally friendly binder consisting of colophony, arabic gum and corn starch, moreover white glue and bioepoxy are also used to compare with the green resins. Three different binder compositions for the specimens. The samples underwent mechanical testing through tensile and bending assessments, and their performance was compared to that of non-green binders to validate the effectiveness of the manufacturing processes. The study revealed that decreasing the moisture content during the curing process is crucial for improving the mechanical properties. The best results were achieved when using arabic gum as a binder, yielding a tensile strength of 2.16 MPa and a bending strength of 5.25 MPa, with a composition of 62.5% hemp shiv and a manufacturing process involving a pressure of 5 MPa.

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Martinez, B. [et al.]. Experimental assessment of hemp shiv and green adhesives to produce a biocomposite material. "Materials (Basel)", 9 Agost 2024, vol. 17, núm. 16, article 3900.

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1996-1944

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