Macro-RAFT agent mediated dispersion polymerization: the monomer concentration effect on the morphology of the in situ synthesized block copolymer nano-objects
作者： Zhonglin Ding , Chengqiang Gao , Shuang Wang , Hui Liu , Wangqing Zhang
DOI: 10.1039/C5PY01202C
关键词: Polymer chemistry 、 Polymerization 、 Dispersion polymerization 、 Reversible addition−fragmentation chain-transfer polymerization 、 Chemistry 、 Chain transfer 、 Precipitation polymerization 、 Ionic polymerization 、 Chain-growth polymerization 、 Solution polymerization
摘要: The monomer concentration affecting the morphology of in situ synthesized block copolymer nano-objects during macro-RAFT agent mediated dispersion polymerization is investigated. It found that exerts a great influence on both kinetics poly(ethylene glycol) trithiocarbonate and glycol)-block-polystyrene (PEG-b-PS) diblock copolymer. styrene an alcoholic solvent at 50% high follows similar kinetic behaviour to homogeneous RAFT as indicated by linear ln([M]0/[M])–time plot, good control molecular weight PEG-b-PS distribution achieved. With extension PS block, changes from porous nanospheres bicontinuous finally entrapped vesicles, which much different low concentrations. Our results demonstrate important parameter nano-objects.
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