water vapor permeability

water vapor permeability

That property of a material which permits the passage of water vapor through it; the time rate of water vapor transmission through a unit area of flat material of unit thickness induced by a unit vapor pressure difference between two specific surfaces, under specified temperature and humidity conditions.
References in periodicals archive ?
It provides a very dry and clean surface with brilliant color without oil stains and has an excellent water vapor permeability that ensures breathability of the leather.
Specifically, the puncture strength and deformation, tensile strength and percentage tensile elongation, water vapor permeability and opacity of the films were measured by the researchers.
The effect of polymer content in the mixture and temperature of coagulation bath in the pore size, water vapor permeability and intrusion pressure of LDPE flat membranes was studied.
The water vapor permeability is an essential factor for PLA as food packaging materials.
The patches were prepared by solvent evaporation technique and analyzed for weight variation, thickness, drug content, swelling index, moisture content, moisture uptake, water vapor transmission rate (WVTR) and water vapor permeability (WVP).
It discusses various types of polymers for food packaging and polymer nanocomposites and antimicrobial activity, oxygen absorbers (scavengers), ultraviolet blocking, and water vapor permeability.
Specifically, oxygen and water vapor permeability are superior to many elastomers.
Water vapor permeability (WVP) tests were conducted using ASTM method E96 with some modifications, described by Galdeano et al.
The water vapor permeability of the insole materials was examined using standard test method ASTM E96.
spunbond and feature improved abrasion resistance, a smooth surface and the ability to maintain water vapor permeability, characteristics ideal for packaging and printing applications.
The water absorption and water vapor permeability were measured as well and results are summarized in Figure 7.
open porosity and the water vapor diffusion resistance factor are related to water vapor permeability, and saturation moisture content is the maximum value of the moisture retention curve and the upper limit of liquid water permeability.