The effect of concentration extender on the making of lignin phenol-formaldehyde from coconut fibre as an environmentally friendly adhesive

• Published in: Journal of physics. Conference series Vol. 2498; no. 1; pp. 12047 - 12053
• Main Authors: Yusmaniar, Kurniadewi, F, Nur Oktavia, A
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.05.2023
• Subjects: Adhesion tests; Copolymers; Lignin; Phenol formaldehyde; Physics; Sulfuric acid; Tapioca

Abstract This study aims to make adhesives with a variety of concentration extenders. First, the coconut husk was delignified with 25% NaOH and then precipitated with sulfuric acid. The yield of lignin from coconut coir was 38.92%, with a purity of 68%, a phenolic hydroxyl content of 2.47%, and an e...