Evaluation of epoxy resins synthesized from steam-exploded bamboo lignin
Evaluation of epoxy resins synthesized from steam-exploded bamboo lignin
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DOI：
10.1016/j.indcrop.2012.08.018
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发表时间：
2013-05-01
影响因子：
5.9
通讯作者：
Nakamura, Yoshitoshi
中科院分区：
文献类型：
--
作者：
Sasaki, Chizuru;Wanaka, Mio;Nakamura, Yoshitoshi
从蒸汽爆炸竹子中提取的木质素已被用作生产固化环氧树脂的原料。本研究制备了三种不同类型的固化环氧树脂。以蒸汽爆竹(蒸汽压力35atm，蒸汽时间5min)为原料，用甲醇提取竹材木质素，用环氧氯丙烷环氧化，然后用普通固化剂1-(2-氰乙基)-2-乙基-4-甲基咪唑(2E4MZ-CN)和竹材木质素固化。同时合成了以二缩水甘油醚双酚A(DGEBA)和2E4MZ-CN固化的普通环氧树脂作为石油基环氧树脂的对照。比较了木素基环氧树脂和石油基环氧树脂的力学性能和热性能。热分解性能(TD5)表明，木素基环氧树脂的耐浸焊性超过了250-280℃。此外，木质素基环氧树脂的弯曲强度是石油基环氧树脂的70%。(C)2012爱思唯尔B.V.保留所有权利。
Lignin extracted from steam-exploded bamboo has been used as resource material for the production of cured epoxy resins. In this study, 3 types of cured epoxy resin were prepared. The bamboo lignin extracted with methanol from steam-exploded bamboo (steam pressure 35 atm: steaming time 5 min) was epoxidized with epichlorohydrin and then cured with the general curing agent 1-(2-cyanoethyl)2-ethyl-4-methylimidazole (2E4MZ-CN) and bamboo lignin. General epoxy resin, cured with diglycidyl ether bisphenol A (DGEBA) and 2E4MZ-CN, was simultaneously synthesized as a petroleum-derived epoxy resin control. The mechanical and thermal properties of lignin-based epoxy resins were compared with petroleum epoxy resins. As indicated by their thermal decomposition properties (Td5), the lignin-based epoxy resins exceeded the dip-solder resistance (250-280 degrees C). Furthermore, lignin-based epoxy resin showed 70% of the flexural strength of the petroleum-based epoxy resin. (c) 2012 Elsevier B.V. All rights reserved.