MVTRs moisture-vapor transmission

MRI magnetic resonance imaging MVTR moisture vapor transmission rate... [Pg.603]

Moisture vapor transmission rate (MVTR), for VDC copolymers, 25 709-710 Molality, 15 751 Molar absorptivity, 14 237 Molar flux, 15 678 Molar Gibbs energy, 24 660, 662 Molarity, 15 751... [Pg.594]

Figure 7. Effect of the internal air gap size on the moisture Vapor transmission (MVTR).

Moisture adsorption Moisture vapor transmission rate (MVTR)... [Pg.2239]

Moisture Vapor Transmission Rate (MVTR) See Water Vapor Transmission Rate. [Pg.469]

The effect of plasticizers and temperature on the permeabiUty of small molecules in a typical vinyUdene chloride copolymer has been studied thoroughly. The oxygen permeabiUty doubles with the addition of about 1.7 parts per hundred resin (phr) of common plasticizers, or a temperature increase of 8°C (91). The effects of temperature and plasticizer on the permeabiUty are shown in Figure 4. The moisture (water) vapor transmission rate (MVTR or WVTR) doubles with the addition of about 3.5 phr of common plasticizers (92). The dependence of the WVTR on temperature is a Htde more comphcated. WVTR is commonly reported at a constant difference in relative humidity and not at a constant partial pressure difference. WVTR is a mixed term that increases with increasing temperature because both the fundamental permeabiUty and the fundamental partial pressure at constant relative humidity increase. Carbon dioxide permeabiUty doubles with the addition of about 1.8 phr of common plasticizers, or a temperature increase of 7°C (93). [Pg.435]

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