Niha Nousheen*1, Kapil Sihag1, Reeja Sundaram2 and Mhaiskar Priya Rajendra3
1Department of Forest Products and Utilization, Forest College and Research Institute,
Hyderabad, India.
2Department of Forest Biology and Tree Improvement, Forest College and Research Institute, Hyderabad, India.
3Department of Forest Ecology and Climate Sciences, Forest College and Research Institute, Hyderabad, India.
Email: nihanousheen026@gmail.com
Received-03.12.2022, Revised-16.01.2023, Accepted-26.01.2023
Abstract: This work aimed to develop a phenolic resin for partially replacing phenol with lignin in phenol-formaldehyde resin preparation and its application in Borassus flabellifer petiole fiber reinforced particle board. The lignin was extractedfrom rice straw using an alkaline treatment with 10% NaOH solutionand analyzed through FTIR spectroscopy. The phenol was replaced by lignin in different proportions as 10%, 20%, and 30%, and a Control Phenol formaldehyde was prepared as per standard. The obtained resin was analyzed for the parameters like pH, solid content,and Flow time as per standard. The particle board was prepared by using PF with 10 % resin content at21kg/cm2 pressure and 150 ℃ temperature for 15 minutes in a hot press machine.The particle boards were tested for their physical (density, moisture content, water absorption- 2 hours and 24 hours, and thickness swelling due to surface absorption-2 hours)and mechanical (modulus of rupture, modulus of elasticity, internal bond strength, and screw withdrawal strength) properties as per IS-3087(2005). The properties of particleboards bonded with LPF resins were found to be comparable and high performing to those of the control-bonded particle boards. The results indicated that the 10% phenol replaced with lignin was the best-performing treatment.
Keywords– Rice, Phenol-formaldehyde resin, Borassus flabellifer, Petiole, Fiber
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