Cationic Copolymerization of Cholesterol Vinyl Ether with Methyl Vinyl Sulfide: Towards New Biologically Active Oligomers

2019 ◽  
Vol 489 (2) ◽  
pp. 288-291
Author(s):  
M. V. Markova ◽  
I. V. Tatarinova ◽  
K. A. Apartsin ◽  
V. V. Kireeva ◽  
B. A. Trofimov
Keyword(s):  
Vinyl Ether ◽  
Biologically Active ◽  
Vinyl Sulfide ◽  
Methyl Vinyl ◽  
Cationic Copolymerization

Cationic copolymerization of cholesterol vinyl ether with methylvinylsulfide: toward medicinal polymers

2019 ◽  
Vol 489 (5) ◽  
pp. 473-477
Author(s):  
M. V. Markova ◽  
I. V. Tatarinova ◽  
K. А. Apartsin ◽  
V. V. Kireeva ◽  
B. A. Trofimov
Keyword(s):  
Vinyl Ether ◽  
Optical Activity ◽  
Vinyl Sulfide ◽  
Methyl Vinyl ◽  
Conformational Effects ◽  
Cationic Copolymerization ◽  
Chirality Induction

Oligomers of cholesterol vinyl ether (CVE) with methyl vinyl sulfide synthesized in the presence of cationic catalyst ВF3 OEt2 in up to 81% yield (Mn up to 5700) demonstrate optical activity exceeding that of CVE homopolymer, which is probably due to both conformational effects of the oligomer chain and chirality induction during the polymerization.

‘Living’ cationic copolymerization of isobutyl vinyl ether with methyl vinyl ether: copolymerization parameters and properties of the copolymers

e-Polymers ◽  
2002 ◽  
Vol 2 (1) ◽  
Author(s):  
Ondine Confortini ◽  
Beatrice Verdonck ◽  
Eric J. Goethals
Keyword(s):  
Vinyl Ether ◽  
Molar Mass ◽  
Solution Temperature ◽  
Monomer Reactivity Ratios ◽  
Critical Solution Temperature ◽  
Methyl Vinyl ◽  
Cationic Copolymerization ◽  
Trimethylsilyl Iodide ◽  
Methyl Vinyl Ether ◽  
Zinc Iodide

AbstractThe copolymerization of isobutyl vinyl ether (IBVE) with methyl vinyl ether (MVE), initiated by the system 1,1-diethoxyethane/trimethylsilyl iodide/zinc iodide and conducted at 0°C in toluene, was found to be ‘living’ just as the homopolymerizations of these monomers. Monomer reactivity ratios are rIBVE = 1.08 and rMVE = 0.43. The lower critical solution temperature of polyMVE in water, situated around 37°C, was lowered to 10°C (for a 0.25 wt.-% solution) when 6 mol-% of IBVE units were introduced in copolymers of molar mass 3000 - 7000 g/mol. At higher IBVE contents, the polymers are insoluble in water at all temperatures.

Thermal gravimetric analysis of in-situ crosslinked nanocellulose whiskers • poly(methyl vinyl ether-co-maleic acid) • polyethylene glycol

TAPPI Journal ◽  
2011 ◽  
Vol 10 (4) ◽  
pp. 29-33
Author(s):  
LEE A. GOETZ ◽  
AJI P. MATHEW ◽  
KRISTIINA OKSMAN ◽  
ARTHUR J. RAGAUSKAS
Keyword(s):  
Thermal Stability ◽  
Polyethylene Glycol ◽  
Vinyl Ether ◽  
Thermal Gravimetric Analysis ◽  
Maleic Acid ◽  
Gravimetric Analysis ◽  
Thermal Gravimetric ◽  
Methyl Vinyl ◽  
Methyl Vinyl Ether

The thermal stability and decomposition of in-situ crosslinked nanocellulose whiskers – poly(methyl vinyl ether-co-maleic acid) – polyethylene glycol formulations (PMVEMA-PEG), (25%, 50%, and 75% whiskers) – were investigated using thermal gravimetric analysis (TGA) methods. The thermal degradation behavior of the films varied according to the percent cellulose whiskers in each formulation. The presence of cellulose whiskers increased the thermal stability of the PMVEMA-PEG matrix.

scholarly journals Conformational isomerism in methyl vinyl ether

1969 ◽  
Vol 22 (7) ◽  
pp. 1539 ◽  
Author(s):  
MJ Aroney ◽  
RJW Le Fevre ◽  
GLD Ritchie ◽  
JD Saxby
Keyword(s):  
Vinyl Ether ◽  
Conformational Isomerism ◽  
Methyl Vinyl ◽  
Methyl Vinyl Ether
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