Evaluation of conductivity and mechanical properties of natural fiber reinforced soy‐melamine formaldehyde based green composite

Abstract

This article presents the preparation and characterization of jute‐based green composite using various concentrations of melamine formaldehyde modified soy resin. Highest tensile strength of 62.1 MPa was obtained for 50 wt.% melamine formaldehyde modified soy resin‐based jute‐composite due to formation of synergic bonding between melamine formaldehyde, soy protein and cellulose of jute. Other tensile and flexural properties were also enhanced with increase in melamine formaldehyde content from 0 to 50 wt.%. Storage modulus of developed composite (50 wt.%) was enhanced by 8.48 times as compared to that of soy‐jute composite (0 wt.% melamine formaldehyde). Water absorption of optimum composite was reduced by 45% than that of the normal jute‐soy composite. With increase in melamine formaldehyde content (0–100 wt.%), surface electrical insulation and fire retardance properties of composite were also enhanced drastically. Weight loss data and scanning electron microscopic images of degraded composites after 180 days under soil burial condition revealed that developed composites are bio‐degradable in nature and can replace non‐degradable plastic in different industrial sectors like railway coaches, packaging sector, decorative commodity material, and so on.

Effect of Chemical Modification of Melicoccus Bijugatus Jacq Starch on the Fabrication of Poly(lactic acid)/Starch Films

“…The size of the ANM granule coincides with the size interval found by other authors, which goes from 15 to 25 μm. [17] The increase in the particle size of the starches when modified with HDI is due to the introduction of the isocyanate groups in the starch chains as mentioned by Prieto [23][24] when observing that the barley starch particles increased from size when chemically modified by acetylation with vinyl acetate (VA) and acetic anhydride (AA), going from 19 μm to 22 μm with VA and 104 μm with N. Lindeboom [25] classifies starch granules into large (> 25 μm), medium (10-25 μm) and very small (< 5 μm) granules, so ANH, AMH and ANM belongs to the medium-sized group while AMM belongs to the large-sized group. The size of the starch granules is important since it affects the physicochemical and mechanical properties when introduced as a filler in PLA films, since small granules have a better dispersion.…”

Mechanical and cytotoxic analysis of cutlery developed from phenol‐formaldehyde modified soy‐jute composite

“…Following the procedure described by Behera et al, soymilk was squeezed out from soy seeds that had been ingrained in water. 15 The extracted milk had an average solid content of 20 wt%. Soymilk of different wt% values (100, 70, 60, 50, 40, 30, and 0) and PF (resole) (0, 30, 40, 50, 60, 70, and 100 wt%) were mixed with cross linking agent (10 wt% of glyoxal), and plasticizer (10 wt% of glycerol) in a 200 mL beaker and mixed for about 15-20 min using magnetic stirrer for the synthesis modified resin.…”

“…According Behera et al, the TS and FS of the equivalent composite did not significantly increase when natural fiber was reinforced with combined matrix of melamine formaldehyde and soy, but the hydrophobicity did. 15 Due to the low mechanical strength of soy resin, which can be improved by modifying or combining it with PF resin, no research has been done on the use of such a combined soy-PF resin system on any natural fiber for the construction of hybrid bio-composites.…”

Starch/PVOH aqueous solutions: a chemical–physical characterization

“…particle board and nonwoven, uses binders 30 based on toxic or potentially toxic substances. 31 These same binders are widely used in kitchen utensils, paints, and paper treatment agents. 32 Therefore, it is evident, that a potential replacement of these binders would have a huge impact on the health of workers in the sector.…”