中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 广州能源研究所
  3. 中国科学院广州能源研究所
Demethylation, phenolation, and depolymerization of lignin for the synthesis of lignin-based epoxy resin via a one-pot strategy

文献类型：期刊论文

作者Zhen, Xiang1,2,3,4; Li, Huiwen2,3,4; Xu, Zhongbin2,3,4; Wang, Qingfeng1,2,3,4; Xu, Jin2,3,4; Zhu, Shunni2,3,4; Wang, Zhongming2,3,4; Yuan, Zhenhong2,3,4
刊名INDUSTRIAL CROPS AND PRODUCTS
出版日期2021-12-01
卷号173页码:9
关键词Lignin Epoxy resin Demethylation Phenolation One-pot Polycondensation
ISSN号0926-6690
DOI10.1016/j.indcrop.2021.114135
通讯作者Zhu, Shunni(zhusn@ms.giec.ac.cn) ; Wang, Zhongming(wangzm@ms.giec.ac.cn)
英文摘要A one-pot method to synthesize demethylated-phenolated lignin (DPL) and demethylated-phenolated lignin based epoxy resin (DPLINP) using phenol as a phenolic reagent and polymerization inhibitor was proposed in this study. This method avoids the occurrence of polycondensation caused by demethylation and simplifies the synthesis of lignin-based epoxy resins. Phenolated lignin (PL)-based epoxy resin (PLINP) and demethylated lignin (DL)-based epoxy resin (DLINP) were prepared to investigate the effects of different modification methods on the resulting lignin and epoxy resin. The results of H-1 nuclear magnetic resonance (NMR), Fourier transform infrared, and gel permeation chromatography analyses indicated that the introduction of phenol could significantly reduce the occurrence of polycondensation while also decreasing the molecular weight and increasing the content of phenolic hydroxyl in DPL compared with DL and PL. 2D heteronuclear single quantum coherence NMR analysis was used to further investigate the structural changes of lignin during the modification process. The results obtained via dynamic mechanical analysis, flexural test, and impact test demonstrated that demethylated-phenolated lignin-based epoxy network (DPLIEN) possessed an improved cross-linking density, glass transition temperature, and mechanical performance compared with all other epoxy resins. Moreover, the polycondensation of DL caused by demethylation deteriorated the mechanical performance of demethylated lignin-based epoxy network (DLIEN). The thermal stability of DPLIEN was decreased compared with phenolated lignin-based epoxy network (PLIEN), as the removal of methoxy groups may have reduced the protective char layer formation in DPLIEN. This study provides a novel method for the modification of lignin and synthesis of lignin-based epoxy resins.
WOS关键词KRAFT LIGNIN ; CLEAVAGE ; LINKAGES ; POLYMER
WOS研究方向Agriculture
语种英语
WOS记录号WOS:000711829100005
出版者ELSEVIER
源URL[http://ir.giec.ac.cn/handle/344007/35197]  
专题中国科学院广州能源研究所
通讯作者Zhu, Shunni; Wang, Zhongming
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
3.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714		 Zhen, Xiang,Li, Huiwen,Xu, Zhongbin,et al. Demethylation, phenolation, and depolymerization of lignin for the synthesis of lignin-based epoxy resin via a one-pot strategy[J]. INDUSTRIAL CROPS AND PRODUCTS,2021,173:9.
APA Zhen, Xiang.,Li, Huiwen.,Xu, Zhongbin.,Wang, Qingfeng.,Xu, Jin.,...&Yuan, Zhenhong.(2021).Demethylation, phenolation, and depolymerization of lignin for the synthesis of lignin-based epoxy resin via a one-pot strategy.INDUSTRIAL CROPS AND PRODUCTS,173,9.
MLA Zhen, Xiang,et al."Demethylation, phenolation, and depolymerization of lignin for the synthesis of lignin-based epoxy resin via a one-pot strategy".INDUSTRIAL CROPS AND PRODUCTS 173(2021):9.

入库方式： OAI收割

来源：广州能源研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。