The amorphous regions in the membrane increased with the addition of silica; therefore, more acetic acid and water molecules could go through the membrane, especially water molecules, resulting in the increase of permeation
flux with a sacrifice of selectivity.
To evaluate fuel permeation
, testing was performed by an OEM automotive manufacturer, in accordance with an internal testing procedure that is described as follows: A fuel vessel, in which the fuel is contained by an elastomer barrier is placed in a heated chamber.
In addition to permeation
benefits, the PA 6 does not need tie-layers to bond to HDPE or recyclate.
For the packaging industry, Systech's oxygen permeation
and water vapor permeation
analyzers offer testing of all packaging film, finished package and PET bottles.
Figure 3 shows the vapor permeation
of different penetrants through 80/20 NR/EVA blend membrane.
resistance was measured on the same FKM polymers, using the same six fuel-ethanol blends.
We had a constant stream of visitors to our stand throughout the week who were very interested in our range of permeation
analyser and headspace analyser instruments.
the subject of the public contract is gel permeation
chromatography (gpc) with fractionation of polymer flow field (field-flow fractionation - fff) and multiple detection (gradient multi-angle light scattering - cg-mals, online viscometry, uv-vis detector, a differential refractometer - ri and dynamic dispersion - dls).
The concentration profiles of drug around an ideal flat film for physical permeation
were illustrated in Fig.
of a fluid through an elastomer membrane is given by the integrated form of Fick's law (ref.
The '053 patent provides for a protective porous membrane layer, or permeation
layer, to be deposited over microchip electrodes.
specifications with less material--and barrier material can be a container's most expensive ingredient.