摘要
首先设计合成了一种末端带羟基的新型嘧啶衍生物UPy-OH,然后利用二环己基碳二亚胺/二甲氨基吡啶催化体系将UPy-OH共价接枝到侧链带—COOH的反应性聚氨酯PU-COOH上,制得一种新的线性聚氨酯材料PU-g-UPy。理论上,侧链UPy间可形成类似共价键的四重氢键体系,促使线性PU-g-UPy形成网络状超分子结构,从而使PU-g-UPy兼具线性聚氨酯良好加工性和交联聚氨酯良好力学性能的优点。建立了UPy-OH和PU-g-UPy的合成方法,并采用所建合成方法成功制得了UPy-OH(FT-IR、1 H NMR、13 C NMR表征)和PUg-UPy(FT-IR表征),这为后续进一步研究PU-g-UPy的加工性、力学性能和生物学性能等奠定了材料基础。
A hydroxyl-terminated ureidopyrimidone monomer (UPy-OH) was designed and synthesized from 6-methyl isocytosine, hexamethylene diisocyanate and ethanolamine, which was then grafted onto the side chain of a linear polyurethane containing pendant -COOH groups (PU-COOH) under the catalysis of DCC/DMAP. Theoretically, since UPy units can form covalent-like quadruple hydrogen bonding, the obtained linear polyurethane grafted with UPy (PU-g-UPy) is supposed to be able to form supramolecular networks so as to integrate the merits of good processibility of linear PUs and strong mechanical properties of crosslinked PUs. In this paper, the synthesis methods of UPy-OH and PU-g-UPy were reported. By using these methods, UPy-OH (FT-IR, 1H NMR and 13C NMR detections) and PU-g-UPy (FT-IR detection) were successfully synthesized, which provided fundamentals for further studies on the processibility, mechanical properties and biological effects of PU-g-UPy.
作者
李振龙
任玮
高汉阳
蒋弟勇
王远亮
罗彦凤
LI Zhenlong;REN Wei;GAO Hanyang;JIANG Diyong;WANG Yuanliang;LUO Yanfeng(Laboratory for Smart & Bioinspired Materials, College of Bioengineering, Chongqing University, Chongqing 400030, China;R&D Center, Lutianhua Group Company Ltd., Luzhou 646300,China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2019年第1期1178-1182,共5页
Journal of Functional Materials
基金
国家自然科学基金面上资助项目(31771013)
国家级大学生创新训练计划资助项目(201710611098)
重庆市社会民生科技创新专项资助项目(cstc2017shmsA130087)
关键词
聚氨酯
脲基嘧啶酮
线性
超分子网络
合成
polyurethane
ureidopyrimidone
linear
supramolecular network
synthesis
