Shrimp waste protein for bio-composite manufacturing: Formulation of protein-cornstarch-mimosa-tannin wood adhesives

The present work aims to isolate protein from shrimp waste for the formulation of wood adhesive. The obtained proteins were successfully characterized in terms of their morphology, physical and chemical properties. Then, the effect of protein (P) formulated with corn-starch-mimosa-tannin (CSMT) at different ratios of CMST/P (w/w) on mechanical properties such as internal bond (IB) modulus of elasticity (MOE), modulus of rupture (MOR) and surface of soundness (SS) as well as on physical performance such as thickness swelling (TS) and water absorption (WA) was investigated. Results show that the mechanical and physical properties were enhanced, particularly for particleboards glued with CSMT/P (99.2/0.8; w/w) wood adhesive. Comparing to neat CSMT the IB, MOE, MOR and SS of particleboards bonded with CSMT/P (99.2/0.8; w/w) were increased by 18.18%, 19.56%, 34.61% and 17.03%, respectively. Additionally, a significant decrease in TS and WA was observed (similar to 43.33% and 19.76% after 2 h, and 21.05% and 14.57% after 24 h of wetting in water, respectively), was observed.

Automated summary

This study successfully isolated proteins from shrimp waste for the formulation of wood adhesive. The addition of protein improved the mechanical and physical properties of the adhesive compared to the neat adhesive.