Branch structures in poly(vinyl chloride) and the mechanism of chain transfer to monomer during vinyl chloride polymerization

1983 ◽  
Vol 16 (5) ◽  
pp. 790-807 ◽  
Author(s):  
W. H. Starnes ◽  
Frederic C. Schilling ◽  
I. M. Plitz ◽  
Rudolf E. Cais ◽  
D. J. Freed ◽  
...  
Keyword(s):  
Vinyl Chloride ◽  
Chain Transfer ◽  
Poly Vinyl Chloride

Chain transfer grafting of butyl acrylate onto poly(vinyl chloride) in emulsion

Polymer ◽  
1994 ◽  
Vol 35 (13) ◽  
pp. 2888-2892 ◽  
Author(s):  
Z.M Zhou ◽  
M Zhu ◽  
X.D Wu ◽  
D.Z Qian
Keyword(s):  
Vinyl Chloride ◽  
Butyl Acrylate ◽  
Chain Transfer ◽  
Poly Vinyl Chloride

Synthesis and characterization of poly(vinyl chloride-graft-2-vinylpyridine) graft copolymers using a novel macroinitiator by reversible addition-fragmentation chain transfer polymerization

e-Polymers ◽  
2014 ◽  
Vol 14 (1) ◽  
pp. 27-34 ◽  
Author(s):  
Temel Öztürk ◽  
Melahat Göktaş ◽  
Bedrettin Savaş ◽  
Mustafa Işıklar ◽  
Mehmet Nuri Atalar ◽  
...  
Keyword(s):  
Vinyl Chloride ◽  
Chain Transfer ◽  
Raft Polymerization ◽  
Graft Copolymers ◽  
Monomer Concentration ◽  
Polymerization Reaction ◽  
Scanning Calorimetry ◽  
H Nmr ◽  
Poly Vinyl Chloride ◽  
Reversible Addition

AbstractSynthesis of poly(vinyl chloride-graft-2-vinylpyridine) graft copolymers was carried out by reversible addition-fragmentation chain transfer (RAFT) polymerization of 2-vinylpyridine using a novel macroinitiator (RAFT macroinitiator). For this purpose, RAFT macroinitiator was obtained from the potassium salt of ethyl xanthogenate and poly(vinyl chloride) (PVC). Then the graft copolymers were synthesized by using RAFT macroinitiator and 2-vinylpyridine. The principal parameters such as monomer concentration, initiator concentration, and polymerization time that affect the polymerization reaction were studied. The effect of the reaction conditions on the heterogeneity index and molecular weight was also investigated. The block lengths of the graft copolymers were calculated by using 1H nuclear magnetic resonance (1H NMR) spectra. The block lengths of the copolymers could be adjusted by varying the monomer and initiator concentrations. The characterizations of the samples were carried out by using 1H NMR, Fourier-transform infrared spectroscopy, gel-permeation chromatography, thermogravimetric analysis, differential scanning calorimetry, and fractional precipitation (γ value) techniques. RAFT polymerization is used to control the polymerization of 2-vinylpyridine over a broad range of molecular weights.

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