Facile Fabrication of Water Dispersible Latex Particles with Homogeneous or Chain-Segregated Surface from RAFT Polymerization Using a Mixture of Two Macromolecular Chain Transfer Agents
Facile Fabrication of Water Dispersible Latex Particles with Homogeneous or Chain-Segregated Surface from RAFT Polymerization Using a Mixture of Two Macromolecular Chain Transfer Agents
复制标题
使用两种高分子链转移剂的混合物通过 RAFT 聚合轻松制备具有均匀或链分离表面的水分散乳胶颗粒
DOI：
10.1002/marc.201600003
复制
发表时间：
2016
影响因子：
4.6
通讯作者：
Wang Chaoyang
中科院分区：
文献类型：
--
作者：
Sun Li;Hong Liangzhi;Wang Chaoyang
以聚甲基丙烯酸单甘油酯（PGMA）和聚甲基丙烯酸2，3-双（琥珀酰氧基）丙酯（PBSPMA）为大分子链转移剂，通过甲基丙烯酸苄酯（BzMA）的可逆加成-断裂链转移非均相聚合，一锅法合成了具有随机混合壳层或链分离表面的水分散乳胶粒。在甲醇溶液中，两种原位合成的PGMA-B-PBzMA和PBSPMA-B-PBzMA两嵌段共聚物共聚集成球形胶束，该胶束以PBzMA为核，壳层为分散的PGMA和PBSPMA纳米畴。而在水-甲醇混合溶剂（V/V= 9/1）中，得到的乳胶粒子壳层上PGMA和PBSPMA聚合物链分布均匀。讨论了PBSPMA在甲醇和水-甲醇混合溶剂中的聚合动力学和物理状态。这些表面具有图案化官能团的聚合物胶束在超胶体分级组装和催化方面具有潜在的重要应用。
Water dispersible latex particles with randomly mixed shells or chain segregated surface are synthesized from one‐pot reversible addition–fragmentation chain transfer heterogeneous polymerization of benzyl methacrylate (BzMA) using a mixture of poly(glycerol monomethacrylate) (PGMA) and poly(2,3‐bis(succinyloxy)propyl methacrylate) (PBSPMA) macromolecular chain transfer agents. In methanol, the two in situ synthesized PGMA‐b‐PBzMA and PBSPMA‐b‐PBzMA diblock copolymers coaggregate into spherical micelles, which contain PBzMA core and discrete PGMA and PBSPMA nanodomains on the shell. In contrast, in water–methanol mixture (V/V= 9/1), latex particles with homogeneous distribution of PGMA and PBSPMA polymer chains on the shell are obtained. The reasons leading to formation of latex particles with homogenous or chain‐segregated surface are discussed, and polymerization kinetics and physical state of PBSPMA in methanol and water–methanol mixtures are ascribed. These polymeric micelles with patterned functional group on the surface are potentially important for application in supracolloidal hierarchical assemblies and catalysis.