An approach to improve the application of acid-insoluble lignin from rice hull in phenol-formaldehyde resin

作者：Ma, Yuejia; Zhao, Xu; Chen, Xue; Wang, Zichen^*

来源：Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2011, 377(1-3): 284-289.

DOI：10.1016/j.colsurfa.2011.01.006

• Rice hull acid-insoluble lignin
• Lignin/PF
• Covalent interaction
• Phenolation
• Three-step polymerization

The study was based on the yield of ligninphenol and the resins, morphology, temperature stability, water and ultraviolet resistance of the formulated resins, to describe a route to improve the potential for partially replacing phenol with rice hull acid-insoluble lignin in phenol-formaldehyde (PF) resin. In this route, phenolation and three-step polymerization were combined to increase the reactivity of rice hull acid-insoluble lignin. The formulated resin exhibited a better morphology and temperature stability compared with rice hull acid-insoluble lignin/PF (RPF) resin, and a better water and ultraviolet resistance compared with ligninphenol/PF resin prepared by phenolation and one-step polymerization (LPF1). The good properties of the product were attributed to the increased covalent interaction between PF resin and lignin. The strategy showed low-cost, simple operation, no pollution and high value.

• 出版日期2011-3-5
• 单位吉林大学