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

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...

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Published inJournal of physics. Conference series Vol. 2498; no. 1; pp. 12047 - 12053
Main Authors Yusmaniar, Kurniadewi, F, Nur Oktavia, A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.05.2023
Subjects
Adhesion tests
Copolymers
Lignin
Phenol formaldehyde
Physics
Sulfuric acid
Tapioca
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Abstract 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 equivalent molecular weight of 1666.67 g/mol. Lignin was then used to synthesize phenol-formaldehyde (LPF) lignin by adding tapioca flour extender with variations of 10%, 20% and 30% of the mass of phenol through the resol method with 50% NaOH catalyst. Then the characterization was carried out using FTIR Spectrophotometer, XRD and adhesive test. The results showed that the LPF copolymer with a 10% extender was better than the LPF copolymer without an extender for wood adhesives with adhesive resistance of 955.34 N and low formaldehyde emission of 0.44 mg/L.
AbstractList 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 equivalent molecular weight of 1666.67 g/mol. Lignin was then used to synthesize phenol-formaldehyde (LPF) lignin by adding tapioca flour extender with variations of 10%, 20% and 30% of the mass of phenol through the resol method with 50% NaOH catalyst. Then the characterization was carried out using FTIR Spectrophotometer, XRD and adhesive test. The results showed that the LPF copolymer with a 10% extender was better than the LPF copolymer without an extender for wood adhesives with adhesive resistance of 955.34 N and low formaldehyde emission of 0.44 mg/L.
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 equivalent molecular weight of 1666.67 g/mol. Lignin was then used to synthesize phenol-formaldehyde (LPF) lignin by adding tapioca flour extender with variations of 10%, 20% and 30% of the mass of phenol through the resol method with 50% NaOH catalyst. Then the characterization was carried out using FTIR Spectrophotometer, XRD and adhesive test. The results showed that the LPF copolymer with a 10% extender was better than the LPF copolymer without an extender for wood adhesives with adhesive resistance of 955.34 N and low formaldehyde emission of 0.44 mg/L.
Author Yusmaniar
Nur Oktavia, A
Kurniadewi, F
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  fullname: Nur Oktavia, A
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Snippet Abstract This study aims to make adhesives with a variety of concentration extenders. First, the coconut husk was delignified with 25% NaOH and then...
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...
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StartPage 12047
SubjectTerms Adhesion tests
Copolymers
Lignin
Phenol formaldehyde
Physics
Sulfuric acid
Tapioca
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Title The effect of concentration extender on the making of lignin phenol-formaldehyde from coconut fibre as an environmentally friendly adhesive
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