使用日本雪松中的二醇木质素无溶剂制备弹性体环氧树脂

Solvent-Free Fabrication of an Elastomeric Epoxy Resin Using Glycol Lignin from Japanese Cedar.

作者信息

Ono Kenta, Tanaike Osamu, Ishii Ryo, Nakamura Takashi, Shikinaka Kazuhiro, Ebina Takeo, Nge Thi Thi, Yamada Tatsuhiko

机构信息

Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology (AIST), 4-2-1 Nigatake, Miyagino-ku, Sendai, Miyagi 983-8551, Japan.

Center for Advanced Materials, Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki 305-8687, Japan.

出版信息

ACS Omega. 2019 Oct 7;4(17):17251-17256. doi: 10.1021/acsomega.9b01884. eCollection 2019 Oct 22.

DOI:10.1021/acsomega.9b01884

PMID:31656899

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6811843/

Abstract

In this study, a simple formulation of softwood-derived glycol lignin (GL)-based epoxy resin with a high GL content of greater than 50 wt % was demonstrated by direct mixing with poly(ethylene glycol) diglycidyl ether (PEGDGE), an aliphatic epoxide, without using any solvent. Because the GL powder produced from poly(ethylene glycol) (PEG400) solvolysis of Japanese cedar softwood meal was a PEG400-modified lignin (GL400), a strong affinity between PEG counterparts facilitates the uniform mixing of GL400 with PEGDGE, and one component uncured GL400/PEGDGE epoxy resin was prepared at a relatively lower temperature (100 °C) than the curing temperature (130 °C). The epoxy curing reaction was monitored by H NMR and Fourier transform infrared spectroscopies. The physical and mechanical properties of the epoxy resins with different GL400 contents were then evaluated. The developed resins exhibited good flexibility and elasticity depending on the GL400 content.

摘要

在本研究中，通过与脂肪族环氧化物聚乙二醇二缩水甘油醚（PEGDGE）直接混合，在不使用任何溶剂的情况下，展示了一种高GL含量大于50 wt%的基于软木衍生乙二醇木质素（GL）的简单环氧树脂配方。由于由日本雪松软木粉的聚乙二醇（PEG400）溶剂解产生的GL粉末是一种PEG400改性木质素（GL400），PEG对应物之间的强亲和力促进了GL400与PEGDGE的均匀混合，并且在比固化温度（130°C）相对较低的温度（100°C）下制备了单组分未固化的GL400/PEGDGE环氧树脂。通过1H NMR和傅里叶变换红外光谱监测环氧固化反应。然后评估了不同GL400含量的环氧树脂的物理和机械性能。所开发的树脂根据GL400含量表现出良好的柔韧性和弹性。