Photoinitiated Seeded RAFT Dispersion Polymerization: A Facile Method for the Preparation of Epoxy-Functionalized Triblock Copolymer Nano-Objects
Photoinitiated Seeded RAFT Dispersion Polymerization: A Facile Method for the Preparation of Epoxy-Functionalized Triblock Copolymer Nano-Objects
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光引发种子 RAFT 分散聚合：一种制备环氧官能化三嵌段共聚物纳米物体的简便方法
DOI：
10.1002/marc.201800473
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发表时间：
2018
影响因子：
4.6
通讯作者：
Zhang Li
中科院分区：
文献类型：
--
作者：
Li Xueliang;Tan Jianbo;Xu Qin;He Jun;Zhang Li
在本研究中，发展了一种新颖的光引发种子可逆加成-断裂链转移(RAFT)分散聚合，用于在室温下制备环氧官能化三嵌段共聚物纳米对象。以甲基丙烯酸缩水甘油酯的光引发RAFT分散聚合制备的环氧官能化虫体和囊泡为种子，通过光引发甲基丙烯酸和丙烯酸酯单体的种子RAFT分散聚合进行扩链。在聚合过程中保持良好的控制，聚合速率高。光引发种子RAFT分散聚合可制得纯的三嵌段共聚物蜗杆，聚合度可达第三嵌段的较宽范围。光引发种子RAFT分散聚合的室温特性是保证聚合后环氧基团存活的关键。所得到的三嵌段共聚物纳米对象可以通过与二胺反应而交联化。最后，以交联虫为固定相，对水中有机染料进行选择性分离。
In this study, a novel photoinitiated seeded reversible addition–fragmentation chain transfer (RAFT) dispersion polymerization is developed for the preparation of epoxy‐functionalized triblock copolymer nano‐objects at room temperature. Epoxy‐functionalized worms and vesicles prepared by photoinitiated RAFT dispersion polymerization of glycidyl methacrylate are used as seeds for chain extension by photoinitiated seeded RAFT dispersion polymerization of methacrylic and acrylic monomers. Good control is maintained during the polymerization with a high polymerization rate. Pure triblock copolymer worms can be prepared by the photoinitiated seeded RAFT dispersion polymerization with a broad degree of polymerization range of the third block. The room temperature feature of photoinitiated seeded RAFT dispersion polymerization is critical to ensure the survival of epoxy moiety after the polymerization. The obtained triblock copolymer nano‐objects can be cross‐linked by reacting with a diamine. Finally, cross‐linked worms are used as the stationary phase of chromatography for selective separation of organic dyes from water.