Effects of adding ammonium dihydrogen phosphate to a water-soluble extract of the inner part of oil palm trunk on binderless particleboard

This study investigated the effects of adding ammonium dihydrogen phosphate (ADP) on the physical and chemical changes of a water-soluble extract of the inner part of oil palm trunk (OPT) to clarify the bonding mechanism of the binderless particleboard. The extract’s effect on ADP-added binderless p...

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Bibliographic Details
Published in:Bioresources 2021-08, Vol.16 (3), p.6015-6030
Main Authors: Komariah, Rahma N., Miyamoto, Takuji, Kusumah, Sukma S., Tanaka, Soichi, Umezawa, Toshiaki, Kanayama, Kozo, Umemura, Kenji
Format: Article
Language:English
Subjects:
Adenosine diphosphate
Adhesives
Aluminum
Ammonium
Ammonium dihydrogen phosphate
Carbonyl compounds
Carbonyls
Glucose
Heat
Infrared spectroscopy
Lignocellulose
Manufacturing
Mechanical properties
Mixtures
Moisture content
Particle board
Spectrum analysis
Stability analysis
Sucrose
Thermal analysis
Thermal stability
Viscosity
Water chemistry
Water resistance
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Summary:This study investigated the effects of adding ammonium dihydrogen phosphate (ADP) on the physical and chemical changes of a water-soluble extract of the inner part of oil palm trunk (OPT) to clarify the bonding mechanism of the binderless particleboard. The extract’s effect on ADP-added binderless particleboard was also investigated. OPT particles were treated by hot water at 60 °C for 6 h. Water-soluble extract and treated OPT particles were obtained. ADP was added to the water-soluble extract at 0, 10, and 40 wt%, and the mixtures were heated at 180 °C for 10 min. Furthermore, binderless particleboards using the treated particles were manufactured with similar condition. The 10 wt% ADP mixture changed the water-soluble extract to an insoluble substance, which was twice that of with 0 wt.% ADP addition. Infrared spectroscopy revealed peaks of furan and carbonyl in the insoluble substance. This indicated that the free sugar content in the water-soluble extract would change to furan compounds. Thermal analysis revealed that the resulting insoluble substance had good thermal stability, suggesting a high-molecular-weight substance. The insoluble substance would contribute to bonding of the binderless particleboards. In particular, a significant contribution to the water resistance was observed.
ISSN:1930-2126
1930-2126
DOI:10.15376/biores.16.3.6015-6030