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Chemistry and Industry of Forest Products ›› 2020, Vol. 40 ›› Issue (6): 70-76.doi: 10.3969/j.issn.0253-2417.2020.06.009

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Preparation of High-ortho Phenolic Resin Fiber from Eucalyptus Residue

Can LIU1(), Yu REN1, Xin LI1, Jianxiang LIU1, Zhengjun SHI1, Zhifeng ZHENG2,*()   

  1. 1. Key Laboratory of National Forestry and Grassland Administration for Highly-Efficient Utilization of Forest Biomass Resources in the Southwest China; National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources; College of Materials Science and Engineering, Southwest Forestry University, Kunming 650224, China
    2. College of Energy, Xiamen University, Xiamen 361102, China
  • Received:2020-06-29 Online:2020-12-28 Published:2020-12-29
  • Contact: Zhifeng ZHENG E-mail:liucanswfu@163.com;zhifeng.zheng@xmu.edu.cn

Abstract:

Biomass-based high-ortho phenolic resin fibers were prepared from eucalyptus bark, tree stem, and lignin. FT-IR, TG, DSC and mechanical properties as well as the measurement of free phenol, were used to evaluate the properties of different biomass-based thermoplastic phenolic resins. The influence of the amount of the same kind of biomass on phenolic resins, and the mixing process on mechanical properties of bio-based phenolic resins fiber were alse investigated. The results showed that the composition of lignin-based resin was uniform, the structure was stable, and the thermal stability was the best. The bio-based phenolic resins with three lignin ratios had similar ortho-position(O/P) ratios, and the ortho-position reaction ratios were all greater than the para-position. When the ratio of lignin and phenol was 1:4, the obtained resin had uniform composition and best performance. The internal mixing process could homogenize the resin and avoid overheating, which caused by internal heat generation. Combined with mechanical properties, the optimal conditions of mixing process of bio-based fibers were internal mixing for 15 min, rotation speed of 45 r/min, and internal mixing temperature of 135 ℃. The maximum strength was 168.6 MPa and the elongation at break was 2.1%.

Key words: eucalyptus residue, high-ortho, phenolic resin, fiber

CLC Number: