Narrow-Polydispersity Diblock and Triblock Copolymers of Alkyl Acrylates by a “Living” Stable Free Radical Polymerization

1996 ◽  
Vol 29 (27) ◽  
pp. 8992-8993 ◽  
Author(s):  
Nancy A. Listigovers ◽  
Michael K. Georges ◽  
Peter G. Odell ◽  
Barkev Keoshkerian
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Triblock Copolymers ◽  
Free Radical Polymerization ◽  
Stable Free Radical ◽  
Alkyl Acrylates ◽  
Stable Free Radical Polymerization

Stable free radical polymerization––acrylate alkoxyamine synthesis

2004 ◽  
Vol 45 (27) ◽  
pp. 5317-5319 ◽  
Author(s):  
Julie L. Lukkarila ◽  
Gordon K. Hamer ◽  
Michael K. Georges
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Stable Free Radical ◽  
Stable Free Radical Polymerization

Stable Free Radical Polymerization of Acrylates Promoted by α-Hydroxycarbonyl Compounds

2006 ◽  
Vol 39 (16) ◽  
pp. 5359-5363 ◽  
Author(s):  
Antoine Debuigne ◽  
Thottackad Radhakrishnan ◽  
Michael K. Georges
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Stable Free Radical ◽  
Stable Free Radical Polymerization

Synthesis and characterization of low-molecular-weight azo-acetoxystyrene and azo-naphthalene oligomers via stable free radical polymerization (SFRP)

2010 ◽  
Vol 88 (9) ◽  
pp. 910-921 ◽  
Author(s):  
Dildar Ali ◽  
Zaheer Ahmed ◽  
Peter M. Kazmaier ◽  
Erwin Buncel
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Alternative Pathway ◽  
Free Radical Polymerization ◽  
Molecular Architecture ◽  
Stable Free Radical ◽  
Molecular Weights ◽  
Definitive Evidence ◽  
Stable Free Radical Polymerization ◽  
Corroborative Evidence

As an approach toward controlled molecular architecture through stable free radical polymerization (SFRP), we have prepared a series of oligomers of controlled molecular weights (Mn) and low polydispersities (structures 2 and 3, with n values ranging from 2 to 52). Definitive evidence of structure was obtained through MALDI/MS (inter-peak interval of 162 m/z in azo-acetoxystyrene oligomers 2 and 260 m/z in azo-naphthalene oligomers 3, which correspond to the acetoxystyrene (AS) and naphthalenic (Np) repeating units, with corroborative evidence from NMR and GPC. Two synthetic pathways were explored. Pathway 1 yields azo-acetoxystyrene oligomer 2 via SFR addition of a TEMPO-capped unimer 1 to acetoxystyrene. Subsequent reactions would convert 2 into 3. In an alternative pathway 2, SFR addition of 1 to 4-(1-methoxynaphthyl)styrene gives azo-naphthalene oligomer 3 directly. Thus, the present reported methodology for controlled architecture has achieved synthesis of oligomers from low Mn (chlorobenzene, PhCl, solvent) to relatively high Mn (bulk), with incorporation of naphthyl (donor) and azobenzene (acceptor) moieties, as well as spacer moieties, in a controlled manner.

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