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	Sweet sorghum bagasse as prospective raw material for eco-friendly particleboard
	Kusumah S.S.; Astari L.; Subyakto; Umemura K.
发表日期	2019
起始页码	97
结束页码	131
英文摘要	Sweet sorghum (Sorghum bicolor (L.) Moench) is a multifunctional crop used for energy, food, feed, and fiber; it has been planted throughout the world. For renewable energy in particular, sweet sorghum is a one of the most promising crops for energy resources, due to the fact that its stalk can produce juice that contains a high sugar content. Generally, sweet sorghum can produce 54-69 stalks t/ha. In addition, 6% of global annual production of sweet sorghum is wasted. Bagasse as a byproduct of juice extraction from the stalk of sweet sorghum can be used for ethanol production or animal feed, silage and bio-pellets. However, the production of ethanol from sweet sorghum bagasse has not been economically feasible in recent years. Bio-pellets, animal feed, and silage productions from sweet sorghum bagasse are economically feasible yet could not maintain carbon dioxide neutrality due to its lesser ability in carbon storage. Therefore, it is necessary to consider more effective utilization considering long-term carbon fixation.The utilization of sweet sorghum bagasse as raw material in the development of environmentally friendly particleboard, bonded with a natural adhesive without the addition of harmful chemical substances such as citric acid, was carried out as an effective utilization of the bagasse. The effectiveness of several manufacturing conditions of the particleboard such as pre-treatment of particles before hot pressing condition, citric acid contents, pressing temperature and time, and adding sucrose in adhesion system on physical properties of particleboard were investigated. The pre-drying treatment of the particles and a citric acid (CA) content of 20 wt% were effective in the manufacturing of particleboards. In addition, the effective pressing temperature and time were 200°C and 10 min, respectively. Bending properties, internal bonding strength (IB), and thickness swelling (TS) of the particleboards satisfied the type 18 requirements of the JIS A 5908 (2003). In addition, IB and TS of the particleboard were comparable to those of particleboard bonded with phenol formaldehyde (PF) and polymeric 4.4'-methylenediphenyl isocyanate (pMDI). Particleboard manufactured under effective manufacturing conditions had good biological durability and low formaldehyde emission. However, the particleboard become brittle, hence bending properties and screw holding power (SH) were lower than those of particleboard bonded with PF and pMDI. Therefore, the addition of sucrose (Su) was clarified as an effective method to improve physical properties especially bending properties and SH. The particleboards bonded with the adhesives under 15/85 and 10/90 wt% ratio of CA to Su had good mechanical properties and dimensional stability, and those properties satisfied the type 18 requirements of the JIS A 5908 (2003). In addition, particleboard bonded with the adhesive under those weight ratios of CA to Su had low brittleness, low formaldehyde emission and good termite and decay resistance as same as particleboard bonded with CA. Based on the thermal and FTIR analyses, citric acid reacted with sucrose and particles. This reaction would contribute to the good physical properties of particleboard. Nova Science Publishers, Inc.
英文关键词	Citric acid; Particleboard; Sucrose; Sweet sorghum bagasse
来源期刊	Sweet Sorghum: Characteristics, Cultivation and Uses
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176265
作者单位	Laboratory of Engineering and Modification of Biomaterial, Research Center for Biomaterial, Indonesian Institute of Sciences (LIPI), Bogor, Indonesia; Laboratory of Sustainable Materials, Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto, Japan
推荐引用方式 GB/T 7714	Kusumah S.S.,Astari L.,Subyakto,et al. Sweet sorghum bagasse as prospective raw material for eco-friendly particleboard[J],2019.
APA	Kusumah S.S.,Astari L.,Subyakto,&Umemura K..(2019).Sweet sorghum bagasse as prospective raw material for eco-friendly particleboard.Sweet Sorghum: Characteristics, Cultivation and Uses.
MLA	Kusumah S.S.,et al."Sweet sorghum bagasse as prospective raw material for eco-friendly particleboard".Sweet Sorghum: Characteristics, Cultivation and Uses (2019).