Synthesis of Renewable Thermoset Polymers through Successive Lignin Modification Using Lignin-Derived Phenols
Synthesis of Renewable Thermoset Polymers through Successive Lignin Modification Using Lignin-Derived Phenols
复制标题
木质素衍生酚连续改性合成可再生热固性聚合物
DOI：
10.1021/acssuschemeng.7b00440
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发表时间：
2017-06-01
影响因子：
8.4
通讯作者：
Abu-Omar, Mahdi M.
中科院分区：
文献类型：
--
作者：
Zhao, Shou;Abu-Omar, Mahdi M.
An approach to lignin-based epoxy networks from both organosolv lignin and lignin-derived phenol (dihydroeugenol) are developed using multiple chemical modifications including demethylation, phenolation, and a phenol-formaldehyde reaction. Structures of lignin incorporated novolac polyphenols and epoxy networks (LINENs) were characterized using proton nuclear magnetic resonance and infrared spectroscopy. Compared to a common synthesis route in which lignin was epoxidized prior to blend with comonomers, LINEN derivatives exhibited improved cross-link density, a-relaxation temperature and storage modulus in a glassy region as obtained from dynamic mechanical analysis, and increased thermal stability measured by thermogravimetric analysis. This study widens the routes of lignin modification. Renewable epoxy networks derived from both lignin and lignin derivatives are economically and ecologically attractive.
