Results 221 to 230 of about 88,197 (238)

Water vapor and oxygen permeability of wax films

Journal of the American Oil Chemists' Society, 1993
AbstractThe water vapor (WVP) and oxygen (O2P) permeabilities of beeswax (BW), candelilla wax (CnW), carnauba wax (CrW) and microcrystalline wax (MW), formed as freestanding films, were determined. CnW and CrW both had small values for O2P (0.29 and 0.26 g·m−1·sec−1·Pa−1 × 10−14, respectively), which are less than half the value for high‐density ...
Greener Donhowe, O. Fennema
openaire   +1 more source

Water Vapor and Oxygen Permeabilities of Polyetherurethanes

1990
Effects of soft segment content, hydrophilicity of polyether macroglycol soft segment and presence of polydimethylsiloxane co-soft segment on oxygen and water vapor permeabilities of polyetherurethanes were investigated. Polyetherurethanes were synthesized using a bulk synthesis procedure and solution cast as thin films.
Mutlu Karakelle, Robert A. Taller
openaire   +1 more source

Measurement errors in water vapor permeability of highly permeable, hydrophilic edible films

Journal of Food Engineering, 1994
Abstract Water vapor transmission WVT of films is commonly measured using modifications of the ASTM E 96 Standard Method (‘cup method’). A stagnant air layer exists between the underside of the film mounted on the cup and the surface of the desiccant, saturated salt solution or distilled water contained in the cup.
Aristippos Gennadios, Curtis L. Weller, Charles H. Gooding   +2 more
openaire   +1 more source

Water Vapor Permeability of the Rigid‐Shelled Gecko Egg

Journal of Experimental Zoology Part A: Ecological Genetics and Physiology, 2012
ABSTRACTThe vast majority of squamate reptiles (lizards and snakes) produce parchment‐shelled eggs that absorb water during incubation, and thus increase in mass, volume, and surface area. In contrast, females from a single monophyletic lineage of gekkotan lizards produce rigid‐shelled eggs.
openaire   +2 more sources

Quick determination of water vapor permeability and water vapor resistance of plasters and putties

Construction Materials
The existing methods for determining the coefficient of vapor permeability and vapor permeability resistance of plaster and putty materials are characterized by a long time of the experiment.This underlines the need to create a method for accelerated determination of these indicators, taking into account the simplicity of its practical implementation ...
S. V. Araslankin, A. F. Buryanov
openaire   +1 more source

Water-Impermeable, Water-Vapor-Permeable Coated Fabrics

Textile Research Journal, 1950
George E. Martin, Harold S. Sell, Bruce W. Habeck   +2 more
openaire   +1 more source

Relation of Water Vapor Permeability of Elastomers to Molecular Structure

Rubber Chemistry and Technology, 1965
Abstract This communication is a quantitative correlation of water vapor permeability of nonpolar elastomers with molecular structure. Permeability of physical blends and of composite layers of elastomers are also discussed. Permeability—Elastomer Structure.—Steric hindrance and unsaturation influence water vapor permeability of elastomers. The
openaire   +1 more source

Temperature Dependence of Water Vapor Permeability

Industrial & Engineering Chemistry, 1946
Paul M. Doty, W. H. Aiken, H. Mark
openaire   +1 more source

Water Vapor Permeability of Organic Films

Industrial & Engineering Chemistry Analytical Edition, 1944
Paul M. Doty, Captain Wm. H. Aiken, Hermann. Mark   +2 more
openaire   +1 more source

Permeability of leather to water vapor

Journal of the Franklin Institute, 1941
openaire   +1 more source