Evolution of Morphology of POEGMA-b-PBzMA Nano-Objects Formed by PISA

被引：16
作者：
Zhang, Yaoming [1 ]
Wang, Zongyu [2 ]
Matyjaszewski, Krzysztof [2 ,3 ]
Pietrasik, Joanna [1 ]
机构：
[1] Lodz Univ Technol, Inst Polymer & Dye Technol, Stefanowskiego 12-16, PL-90924 Lodz, Poland
[2] Carnegie Mellon Univ, Dept Chem, 4400 Fifth Ave, Pittsburgh, PA 15213 USA
[3] Lodz Univ Technol, Dept Mol Phys, Zeromskiego 116, PL-90924 Lodz, Poland
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2019年 / 40卷 / 02期
基金：
美国国家科学基金会;
关键词：
morphology; nanostructures; polymerization-induced self-assembly; reversible addition-fragmentation chain transfer;
D O I：
10.1002/marc.201800331
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The evolution of particle morphology occurring during polymerization-induced self-assembly (PISA) of a block copolymer poly(oligo(ethylene glycol) methacrylate)-b-poly(benzyl methacrylate) (POEGMA-b-PBzMA) is studied. A well-controlled reversible addition-fragmentation chain transfer (RAFT) polymerization yields nano-objects with various morphologies: spheres, aggregates, worm-like structures, and vesicles. A comparison of the morphology of the nano-objects formed from two different chain-length stabilizers established that the unreacted monomer played an important role during the morphology transitions, which is contrary to previous observations. In addition, morphology evolution to higher-order structures could be attained simply by extending the reaction time, after reaching full monomer conversion.
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页数：6
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