Preparation of Polyetheramine-Grafted Lignin and Its Application in UV-Resistant Polyurea Coatings
Preparation of Polyetheramine-Grafted Lignin and Its Application in UV-Resistant Polyurea Coatings
复制标题
聚醚胺接枝木质素的制备及其在抗紫外线聚脲涂料中的应用
DOI：
10.1002/mame.201900257
复制
发表时间：
2019
影响因子：
3.9
通讯作者：
Qiu Xueqing
中科院分区：
文献类型：
--
作者：
Fang Chang;Liu Weifeng;Qiu Xueqing
用酶解木质素部分取代聚乙胺，制备了具有良好抗紫外线性能的含木质素脲涂层。木质素首先通过曼尼希反应接枝聚醚胺链，提高了与聚脲基体的界面相容性。研究了改性木质素对聚脲涂料的耐化学性、耐腐蚀性、UV老化性能和热稳定性的影响。结果表明，含木质素的聚脲涂料具有优良的UV老化性能。用聚醚胺胺化木质素可改善其在聚合物基体中的分散性。本研究为生物质木质素在抗紫外聚脲涂料中的高价值利用提供了一种新方法。
Lignin‐containing polyurea coating with good ultraviolet (UV) resistance is prepared by partially substituting polyetheramine with enzymatic hydrolysis lignin. Lignin is first grafted by polyetheramine chains via Mannich reaction, which improves its interfacial compatibility with polyurea matrix. The influences of the modified lignin on the chemical and corrosion resistance, UV‐aging property, and thermal stability of the polyurea coatings are studied. It is demonstrated that lignin‐containing polyurea coatings exhibit excellent UV‐aging properties. Aminating lignin with polyetheramine improves its dispersion in the polymer matrix. This work offers a novel method for the high‐value utilization of biomass lignin in anti‐UV polyurea coatings.