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A novel immobilized cobalt(II)/copper(II) bimetallic catalyst for atom transfer radical polymerization (ATRP) of methyl methacrylate

Paper ID Volume ID Publish Year Pages File Format Full-Text
44002 45999 2007 8 PDF Available
Title
A novel immobilized cobalt(II)/copper(II) bimetallic catalyst for atom transfer radical polymerization (ATRP) of methyl methacrylate
Abstract

A new immobilized catalytic system, cross-linked poly(acrylic acid) (PAA) resin immobilized cobalt(II)/copper(II) bimetallic catalyst, was successfully employed for atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA). Well-defined poly(methyl methacrylate) (PMMA) with low polydispersity (PDI = 1.27) was synthesized using PAA/Co(II)/Cu(II) catalyst without any additional ligand or soluble deactivator. As the immobilized catalyst could be effectively separated from the polymer solution by simple centrifugation after polymerization, colorless PMMA (Co residue < 1 ppm, Cu residue ∼4 ppm) was achieved. Both main catalytic activity and good controllability over polymerization were retained by the recycled catalyst after reused several times. The catalyst was characterized by SEM, EDX, TGA and ESR techniques. The polymerization reaction mechanism was presented.

Graphical abstractCross-linked poly(acrylic acid) (PAA) resin immobilized Co(II)/Cu(II) bimetallic catalyst could well control over the polymerization of methyl methacrylate (MMA). After polymerization, the catalyst could be easily removed, resulting in the concentration of transition-metal residues in polymer product lower than 5 ppm. Both catalytic activity and controllability were retained by the recycled catalyst. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
ATRP; Immobilized catalyst; Cobalt catalyst; Bimetallic catalyst; Catalyst residue
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A novel immobilized cobalt(II)/copper(II) bimetallic catalyst for atom transfer radical polymerization (ATRP) of methyl methacrylate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 332, Issue 2, 20 November 2007, Pages 192–199
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us