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Polymer Chemistry Vol - 4 Issue - 8

Polymer Chemistry Vol - 4 Issue - 7

Polymer Chemistry Vol - 4 Issue - 6

Polymer Chemistry Vol - 4 Issue - 5

Polymer Chemistry Vol - 4 Issue - 4

Polymer Chemistry Vol - 4 Issue - 3

Polymer Chemistry Vol -3

Polymer Chemistry Vol -2

Polymer Chemistry Vol -1

Atom transfer radical polymerization of methyl methacrylate with a thermo-responsive ligand: construction of thermoregulated phase-transfer catalysis in an aqueous–organic biphasic system

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Zhengbiao Chen, Hong Pan, Jinlong Bai, Liangjiu Cheng, Zhenping Zhang, Lifen Zhu, Xiulin
Copyright Year	2013
Abstract	The concept of thermoregulated phase-transfer catalysis (TRPTC) for an aqueous–organic biphasic system was applied in Cu(II)-mediated atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA). Herein, activators generated by electron transfer (AGET) ATRP was used to establish the TRPTC ATRP system using 2-cyanoprop-2-yl 1-dithionaphthalate (CPDN) as an alkyl pseudohalide initiator, CuBr2 as the catalyst and ascorbic acid (AsAc) as the reducing agent. It used a thermo-responsive monofunctional ligand including the dipyridyl group (MPEG-DPA), which enabled the transfer of the catalyst complex into the organic phase from the aqueous phase upon heating, thus achieving homogeneous polymerization; and the catalyst complex could retransfer into the aqueous phase from the organic phase thereby realizing the separation and recycling of the catalyst complex upon cooling. Well-defined PMMA with controlled molecular weight and narrow molecular weight distribution could be obtained by TRPTC ATRP. Furthermore, the polymerization of MMA could be successfully carried out even when the amount of catalyst was reduced to the ppm level. The features of controlled/“living” radical polymerization of MMA were verified by chain end analysis and chain-extension experiments.
Starting Page	2876
Ending Page	2883
Page Count	8
File Format	HTM / HTML PDF
ISSN	17599954
Volume Number	4
Issue Number	9
Journal	Polymer Chemistry
DOI	10.1039/c3py00111c
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	MMA Atom-transfer radical-polymerization Ligand Radical polymerization Copper(II) bromide Redox Polymerization Pseudohalogen AGET AsAc The Features ATRP Para-Methoxy-N-methylamphetamine TRPTC ATRP Alkyl Phase-transfer catalyst Methyl methacrylate
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Bioengineering Biomedical Engineering Polymers and Plastics

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