Kinetics of radical telomerization of vinylidene fluoride in the presence of CCl3Z chain transfer agents

2007 ◽  
Vol 128 (2) ◽  
pp. 144-149 ◽  
Author(s):  
Michel Duc ◽  
Bruno Ameduri ◽  
Ghislain David ◽  
Bernard Boutevin
Keyword(s):  
Chain Transfer ◽  
Vinylidene Fluoride ◽  
Radical Telomerization ◽  
Kinetics Of ◽  
Transfer Agents

scholarly journals Kinetics of chain transfer agents in photopolymer material

2012 ◽  
Author(s):  
Jinxin Guo ◽  
Michael R. Gleeson ◽  
John T. Sheridan
Keyword(s):  
Chain Transfer ◽  
Kinetics Of ◽  
Transfer Agents

The kinetics of polymerization of methacrylates in the presence of chain transfer agents

1974 ◽  
Vol 16 (1) ◽  
pp. 31-37 ◽  
Author(s):  
A.V. Ryabov ◽  
L.A. Smirnova ◽  
G.D. Panova ◽  
V.M. Soldatov ◽  
A.A. Rudin
Keyword(s):  
Chain Transfer ◽  
Kinetics Of Polymerization ◽  
Kinetics Of ◽  
Transfer Agents

scholarly journals Unexpected Radical Telomerisation of Vinylidene Fluoride with 2-Mercaptoethanol

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3082
Author(s):  
Michel Duc ◽  
Bernard Boutevin ◽  
Bruno Ameduri
Keyword(s):  
Nmr Spectroscopy ◽  
Analytical Methods ◽  
Chain Transfer ◽  
Vinylidene Fluoride ◽  
Thiyl Radical ◽  
Transfer Constant ◽  
Butyl Peroxide ◽  
Kinetics Of ◽  
Selective Addition ◽  
End Group

The radical telomerisation of vinylidene fluoride (VDF) with 2-mercaptoethanol as chain transfer agent (CTA) was studied to synthesise fluorinated telomers which bear a hydroxy end-group, such as H(VDF)nS(CH2)2OH, under thermal (di-tert-butyl peroxide as the initiator) or photochemical initiations. A careful structural study of a typical H-VDF-S(CH2)2OH telomer was performed by 1H and 19F NMR spectroscopy. These analytical methods allowed us to explore the selective addition of the thiyl radical onto the hydrogenated side of VDF, and the telomer containing one VDF unit was obtained selectively. Surprisingly, for higher [VDF]o initial concentrations, a monoadduct telomer was produced as well as PVDF homopolymer. This feature was related to the fast consumption of the CTA. The kinetics of radical telomerisation led to a quite high transfer constant of the CTA (40 at 140 °C) that evidences the formation of a monoadduct as the only telomer formed.

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