4-Bromo- and 4-chloroheptafluoro-1,2-epoxybutanes were synthesized and successfully copolymerized with hexafluoropropene oxide derived acid fluorides. Transformation of the bromine-containing acid fluorides to hydrogen terminated compounds was accompanied by substitution of bromine by hydrogen; ...

Excess molar enthalpies, HEm, have been measured using a flow microcalorimeter at 298.15 K and at atmospheric pressure for the eight mixtures containing 1,2-epoxybutane with ethyl acetate, ethyl propanoate, ethyl butyrate, ethyl pentanoate, ethyl hexanoate, ethyl heptanoate, ethyl octanoate and ...

1,2-Epoxybutane, a short-chain epoxide used a stabilizer in chlorinated hydrocarbon solvents, was administered by inhalation exposure as a vapor 6 h/day, 5 day/week, for 24 months at exposure concentrations of 0, 200 or 400 ppm to F344/N rats and 0, 50, or 100 ppm to B6C3F1 mice. Survival of all...

The transformation of 1,2-epoxybutane on PtCandPtCr2O3 catalysts in the presence of hydrogen has been studied in a flow apparatus at atmospheric pressure and in the temperature range 160–190 °C. Parallel formation of butanal, 2-butanone, 1-butanol, and 2-butanol has been observed. The selectiv...

Ignition delay times in ethylene oxide Download full-size image, propylene oxide Download full-size image, 1,2-epoxybutane Download full-size image, and 2,3-epoxybutane Download full-size image, in mixtures containing oxygen and a diluent (argon or nitrogen) were measured behind reflected shock ...

Resting cells of ethene grown Mycobacterium 2W produced 1,2-epoxypropane stereospecifically from propene as revealed by optical rotation, 1H n.m.r. using a chiral shift reagent, and also by complexation gas chromatography involving a glass capillary column coated with an optically active metal c...

Electrospun fibers based on combinations of poly(ε-caprolactone) (PCL) and poly(glycerol sebacate) (PGS) have been studied for applications in cardiac tissue engineering. The aim of the present study is to demonstrate the fabrication of PCL and PGS prepolymer or mildly crosslinked PGS by electr...

Electrospinning of natural and synthetic polymers open a new practical approach to tissue engineering by producing fibers. In this study, aligned electrospun poly(vinyl alcohol) (PVA)-poly(glycerol sebacate) (PGS) fibers with various percentages of lignin (0, 1, 3, and 5%wt) fabricated for nerve...

The objective of this work is to characterize and understand structure–mechanical property relationships in (meth)acrylate networks. The networks are synthesized from mono-functional (meth)acrylates with systematically varying sidegroup structure and multi-functional crosslinkers with varying m...

A novel well-defined amphiphilic graft copolymer of poly(ethylene oxide) as main chain and poly(methyl acrylate) as graft chains is successfully prepared by combination of anionic copolymerization with atom transfer radical polymerization (ATRP). The glycidol is protected by ethyl vinyl ether fi...

New poly(ethyl methacrylate) and poly(2-ethoxyethyl methacrylate) gel electrolytes containing immobilised lithium perchlorate solution in propylene carbonate were prepared by UV radical polymerisation. Materials exhibit high ionic conductivity up to 0.23 mS cm−1 and long-term stability of chemic...

The oxygen permeability and diffusion coefficients of hydrogel membranes prepared with copolymers of 2-ethoxyethyl methacrylate (EEMA)/2,3-dihydroxypropylmethacrylate (MAG) with mole fraction of the second monomer in the range between 0 and 0.75 are described. Values of the permeability and diff...

The present work was devoted to the photostability of two homopolymers, resulting from the polymerization of acrylate monomers used as components of recording materials. This study was undertaken in conditions simulating solar light. The objective was to identify the key elements specific of the...

This study investigates the surface protection treatment of hydrophobic acrylate-based polymers with built-in carboxylic acid groups produced using a controlled Reversible Addition Fragmentation chain Transfer (RAFT) polymerization. The synthesized polymers are dissolved in a water-organic solve...

The synthesis, thermal and mechanical characterizations of uncrosslinked and lightly crosslinked poly(2-ethoxyethyl methacrylate) are reported. The uncrosslinked poly(2-ethoxyethyl methacrylate) exhibits in the glassy state two relaxations called in increasing order of temperature, the gamma and...

Poly[(2-cyanoethyl vinyl ether)-co-(vinyl alcohol)] is a polymer with a higher dielectric constant (ε = 15 at 1 kHz) at room temperature and is therefore used as a binder in electroluminescent lamps. Two different dipole relaxations are observed: a β relaxation, associated with the rotation of...

The radical copolymerizations of chloroprene (CP) and α-cyanoethyl acrylate (CEA) were carried out in toluene at 45°C in moisture free atmosphere by use of dry nitrogen. Microstructures in the copolymers have been examined by 1H and 13C nuclear magnetic resonance and Fourier transform infra-re...

Crosslinked copolymers of cyanoethyl acrylate appear to be good ligands towards ‘Pd2+, in nitromethane. Thus, reaction of [Pd(NC-Me)4]2+ with macromolecular nitriles allows the transfer of the metal centre from an ‘ordinary’ coordination sphere to an unconventional one, i.e. nitrile groups pe...

We have studied the photolysis and the fragmentation in the mass spectrometer of bis(2-cyanoethyl)mercury, bis(2-cyanoethyl) selenide, bis(2-cyanoethyl) sulphide, dibutylbis(2-cyanoethyl)stannane, and bis[2-(methoxycarbonyl)ethyl] selenide. The mercury compound gave a high yield of adiponitrile ...

The photoinitiated polymerization of (meth)acrylate monomers bearing novel carbamate functionality exhibits significantly greater reaction rate when compared to more traditional acrylate monomers undergoing similar polymerization. This unusually fast reactivity has been the subject of much inves...