Characteristics and Mechanicals Potentials of Wood Adhesives Manufactured with Grasses’ Lignins

• 作者: Antonio Pizzi Danwe Raidandi Lionel Tapsia Karga Lucien Meva’a Noel Konai
• 来源期刊: 材料科学与化学工程(英文)
• 学科: 化学
• 关键词: LIGNINS SORGHUM BICOLOR and Andropogon gayanus Structures Adhesives INTERNAL BOND Antioxydants
• 年，卷（期）: clkxyhxgcyw_2019,（1）
• 页码范围: 35-47
• 页数: 13页
• 分类号: O6

摘要

In order to manufacture environmentally friendly particle boards and enhance local resources, the lignins of Sorghum bicolor and Andropogon gayanus characterized using RMN 13C and MALDI TOF have the same structures. They contents Guaiacyl (G), Syringyl (S), p-hydroxyphenylpropane (H) and functional groups of phenols, flavonoids and secondary alcohols. The total phenol content determinated using Folin-Ciocalteu reagent is respectively 20.97 and 15.42 mg eqgallic acid/g of extract. The power of their adhesives is different. The Internal Bond (IB) of particleboards manufactured with these adhesives are respectively 0.37 MPa and 0.41 MPa. These lignins can be used as antioxydants.