Developing Lignin-Based Resin Coatings and Composites

Park, Yoosup, Doherty, William O.S., & Halley, Peter J. (2008) Developing Lignin-Based Resin Coatings and Composites. Industrial Crops and Products, 27(2), pp. 163-167.

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Phenol in phenol formaldehyde (PF) resin has been partly substituted with lignin extracted from sugarcane bagasse. In order to optimize the lignin-based resin for applications in coating and composite materials, thermal and rheological tests were performed with different wt% of lignin substitution into PF resins. Differential scanning calorimetry scans showed a small exothermic peak and a large endothermic peak, typical of resins. The Tg of the resins was seen between 125 and 150 °C and this transition was clearly evident when the lignin content was increased from 10 to 40 wt%. Increasing the lignin content in the PF resin increases the rate of cure and the heat of reaction. Water absorption tests show that the lignin-PF resin films are effective water-barrier coatings for cardboard substrates. It is speculated that the interaction between the substrate and the lignin-PF resin has resulted in a negative surface charge which would have contributed to the reduction in the contact angle.

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ID Code: 17057
Item Type: Journal Article
Refereed: Yes
Keywords: Coatings, Composites, Lignin, Resins, Sugarcane
DOI: 10.1016/j.indcrop.2007.07.021
ISSN: 0926-6690
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MANUFACTURING ENGINEERING (091000)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200)
Divisions: Current > Research Centres > Centre for Tropical Crops and Biocommodities
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2008 Elsevier B.V.
Deposited On: 23 Dec 2008 00:50
Last Modified: 29 Feb 2012 13:42

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