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Atmospheric photodegradation of ethyl vinyl ketone and vinyl propionate initiated by OH radicals
(Elsevier Science, 2011-01)
Rate coefficients for the reactions of hydroxyl radicals with ethyl vinyl ketone and vinyl propionate were determined at 298 K and atmospheric pressure. A collapsible chamber with gas chromatography was used to perform ...
The effect of the annealing on the poly(vinyl alcohol) obtained by freezing-thawing
(Elsevier Science, 2011-07-30)
In the present work poly(vinyl alcohol) (PVA) hydrogels were obtained by freezing/thawing technique. The effect of thermal treatment on its performance was studied by annealing the hydrogels at five different temperatures, ...
Recyclable amitraz-ethylene vinyl acetate strips used for beehives treatment against Varroa destructor
(Sage Publications Ltd, 2017-09)
In this work, a new recyclable ethylene-vinyl acetate (EVA)-based strip impregnated with amitraz (AMZ) was prepared, characterized, and evaluated for the treatment of Apis mellifera against Varroa destructor. Bees are ...
The vinyl bromide optically pumped far infrared laser: New large offset emissions
(Institute of Electrical and Electronics Engineers (IEEE), 2001-04-01)
We present the results of a study on vinyl bromide for the search for new far infrared (FIR) laser lines. As the pump source, we use a CW waveguide CO2 laser with a tunability of 290 MHz around each line in order to pump ...
Thermal and photochemical stability of poly(vinyl alcohol)/modified lignin blends
(Elsevier B.V., 2006-05-01)
A kraft lignin derivative (KLD) obtained by reaction with p-aminobenzoic acid/phthalic anhydride was blended with poly(vinyl alcohol) (PVA) by solution casting from DMSO. PVA and PVA/KLD films were exposed to ultraviolet ...
The vinyl bromide optically pumped far infrared laser: New large offset emissions
(Institute of Electrical and Electronics Engineers (IEEE), 2001-04-01)
We present the results of a study on vinyl bromide for the search for new far infrared (FIR) laser lines. As the pump source, we use a CW waveguide CO2 laser with a tunability of 290 MHz around each line in order to pump ...
Thermal and photochemical stability of poly(vinyl alcohol)/modified lignin blends
(Elsevier B.V., 2006-05-01)
A kraft lignin derivative (KLD) obtained by reaction with p-aminobenzoic acid/phthalic anhydride was blended with poly(vinyl alcohol) (PVA) by solution casting from DMSO. PVA and PVA/KLD films were exposed to ultraviolet ...
Interpretation of x-ray images to investigate the viability of incorporating poly (Ethylene-co-vinyl acetate) (eva) waste in portland cement
(2019-01-01)
EVA (poly(ethylene-co-vinyl acetate)) is a copolymer widely used in the Brazilian footwear industry, where approximately 18% of the EVA remains as waste, principally after the cutting out of insoles. EVA wastes cannot be ...
Tissue reaction after subcutaneous implants of a new material composed of ethylene-vinyl acetate and starch for future use as a biomaterial
(2018-01-01)
This study aimed to evaluate the tissue reaction of ethylene-vinyl acetate (EVA) in 4 different compositions and processing: EVA foamed at high pressure with ultrasound (EVACU); EVA with 15% starch foamed at high pressure ...
Synthesis of cobalt(II)-α-diimines complexes and their activity as mediators in organometallic mediated radical polymerization of vinyl acetate
(2018-02-24)
This study describes the synthesis and characterization of three α-diimine-cobalt complexes of the type [CoCl2(R-DAB)] (R-DAB = R–N[dbnd]CH–CH[dbnd]N–R; R = Mes, Dipp and Dipp∗) and their application as mediators for the ...