The effect of Bagasse alkaline treatment on Medium Density Fiberboard properties

Habibi, Masoudreza; Mahdavi, Saeed; Pezeshki, Vahid; Niromand, Farshid; Familian, Hossein

doi:10.22092/ijwpr.2020.342829.1611

Document Type : Research Paper

Authors

¹ Wood and Paper Science Research Division, Research Institute of Forests and Rangelands , Iran,

² Ph.D., Wood and Paper Science Research Division, Research Institute of Forests and Rangelands , Iran,

³ M.Sc., Advisor to Managing Director of Loh Sabz Jonoob Company, Iran

⁴ Specialist and Head Research and Development,, Loh Sabz Jonoob Company,Iran

⁵ Wood and forest products division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran

https://doi.org/10.22092/ijwpr.2020.342829.1611

Abstract

This study was carried out to investigate the effect of Bagasse alkaline treatment (hydroxide sodium) on Medium Density Fiberboard (MDF) properties. For this purpose, wet depitted and storage bagasse was used. Cooking process was done for fibers preraring in 10 liters digester. Liqure to bagasse ratio was 10 to 1. Hydroxide sodium content was 0%, 4% and 5% based on oven dry weigth of bagasse. Cooking time and temperature were 5 min and 170 centigrade respectively. Fiber slides were obtained by using optical microscope. Chemical components such as holocelloulose and lignin contents were determined. Liqures pH was mesearued before and after cooking. Urea formaldehyde resin was used for MDF producing. Resin content was 12% based on oven dried bagasse. Bending properties (MOR & MOE), internal bonding and thickness swelling of the boards were determined based on EN-310, EN-319 and EN-317 respectively. The results showed that when using 4% alkaline treatment, were seen the minimum fibers cutting and crusing. With increasing of hydroxide sodium content, lignin content decreased and holocelloulose increased. Bulk density increased when increasing hydroxide sodium content. The maximum MOR, MOE and internal bonding of the boards were obtained in 4% hydroxide sodium content. Also thickness swelling of the boards was minimum.

Keywords

20.1001.1.17350913.1399.35.3.1.6

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The effect of Bagasse alkaline treatment on Medium Density Fiberboard properties

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Volume 35, Issue 3 - Serial Number 72October 2020Pages 219-231

Volume 35, Issue 3 - Serial Number 72
October 2020
Pages 219-231