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JSIR Vol.69(05) [May 2010] >

Title: Synthesis of low cost adhesives from pulp & paper industry waste
Authors: Gothwal, R K
Mohan, M K
Ghosh, P
Keywords: Black liquor
Lignin extraction
Phenol formaldehyde (PF) resin
Wood adhesive
Issue Date: May-2010
Publisher: CSIR
Abstract: This study presents lignin extraction from commercial black liquor and utilizes it as a partial substitute in phenol formaldehyde (PF) resin synthesis. Characteristics of modified resin [non volatile solid content (<44%), alkalinity (<5%), pH (<11.6) and free formaldehyde (<1%)] were found close to control PF resin with a variable viscosity (418-781 cP). Shear test properties showed that phenol (15%) replacement with black liquor lignin produced comparable physical bond properties and could be used to formulate a low cost modified PF resin for plywood panels.
Page(s): 390-395
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Source:JSIR Vol.69(05) [May 2010]

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