论文摘要
"Thiol-yne" click reaction has already been widely applied in synthesis and modification of new polymer structures or novel materials due to its specific features. However, in most studies, only chain-end strategy was employed when using the di-addition feature of thiol-yne reaction, thus the in-chain di-addition strategy could endow us with a broader space to develop the synthesis of advanced polymers. Therefore, in this paper, the features of in-chain mono-and di-addition were investigated when modifying the alkynefunctionalized polymers to prepare grafted polymers via thiol-yne click reaction. The results showed that it is almost impossible to obtain the in-chain di-adducts even under excess feeding of chain-end thiol-functionalized grafts, while only the in-chain mono-adducts could be obtained efficiently. Further researches investigated that the controlled grafting could be encountered when carrying out the thiol-yne click reaction between chain-end alkyne-functionalized polystyrenes and chain-end thiol-functionalized polystyrenes under proper feedings.Therefore, the effect of steric-hindrance might be the primary reason for the alternative grafting via thiol-yne click reaction between inchain and chain-end alkyne-functionalized polymers.
论文目录
文章来源
类型: 期刊论文
作者: Lin-Can Yang,Li Han,Hong-Wei Ma,Pi-Bo Liu,He-Yu Shen,Chao Li,Song-Bo Zhang,Yang Li
来源: Chinese Journal of Polymer Science 2019年09期
年度: 2019
分类: 工程科技Ⅰ辑
专业: 有机化工
单位: Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology
基金: financially supported by the National Natural Science Foundation of China (Nos. 21871037,21674017,andU1508204)
分类号: TQ317
页码: 841-850
总页数: 10
文件大小: 6578K
下载量: 9