Facile Catalyst‐Free Approach toward Fully Biobased Reprocessable Lignin Thermosets
Facile Catalyst‐Free Approach toward Fully Biobased Reprocessable Lignin Thermosets
复制标题
轻松实现完全生物基可再加工木质素热固性材料的无催化剂方法
DOI：
10.1002/macp.202200303
复制
发表时间：
2022
影响因子：
2.5
通讯作者：
Tang, Chuanbing
中科院分区：
文献类型：
--
作者：
Buzoglu Kurnaz, Leman;Bension, Yishayah;Tang, Chuanbing
可再加工的生物基热固性材料由两种可再生原料木质素和聚胺 (Priamine 1071) 制备而成。木质素被氧化产生聚羰基并进一步与多胺反应形成亚胺交联网络。热固性材料是在没有任何催化剂的情况下在热和压力下形成的。热固性材料的机械强度和热性能可以通过改变原料比例来调节。动态亚胺交联可以进行缔合重组。
Reprocessable and biobased thermosets are prepared from two renewable feedstocks, lignin and polyamine (Priamine 1071). Lignin is oxidized to produce polycarbonyl and further reacts with polyamine to form a crosslinked network of imines. The thermoset materials are formed under heat and pressure in the absence of any catalysts. The mechanical strength and thermal properties of thermosets are tunable by changing feedstock ratios. The dynamic imine crosslinks can be associatively reformed.