Isostatic and Quasi-Isostatic Methods for Determining the Permeability of Organic Vapors Through Barrier Membranes

2008 ◽  
pp. 49-49-14 ◽  
Author(s):  
AL Baner ◽  
RJ Hernandez ◽  
K Jayaraman ◽  
JR Giacin
Keyword(s):  
Organic Vapors ◽  
Barrier Membranes

Etching of Polymers by Oxygen Plasma

1968 ◽  
Vol 26 ◽  
pp. 408-409
Author(s):  
Virgil Peck ◽  
W. L. Carter
Keyword(s):  
Molecular Weight ◽  
Oxygen Plasma ◽  
Flow Time ◽  
Microscopical Study ◽  
Surface Layers ◽  
Organic Vapors ◽  
Sample Position ◽  
Accuracy Of Measurement ◽  
Bulk Polymers ◽  
Electron Microscopical

Any electron microscopical study of the morphology of bulk polymers has throughout the years been hampered by the lack of any real ability to produce meaningful surface variations for replication. True etching of polymers should show crystalline and amorphous regions in some form of relief. The use of solvents, acids, organic vapors, and inert ion bombardment to etch samples has proved to be useful only in limited applications. Certainly many interpretations of these results are subject to question.The recent use of a radiofrequency (R. F.) plasma of oxygen to degrade and remove organic material with only minor heating has opened a new possibility for etching polymers. However, rigid control of oxygen flow, time, current, and sample position are necessary in order to obtain reproducible results. The action is confined to surface layers; the molecular weight of the polymer residue after heavy etching is the same as the molecular weight of the polymer before attack, within the accuracy of measurement.

The effects of organic vapors on neurocognitive measures and eye tracking among gas station workers.

2020 ◽  
Vol 13 (2) ◽  
pp. 176-186
Author(s):  
Armindo A. Campos Neto ◽  
Michael Jackson Oliveira Andrade ◽  
Ana Raquel Oliveira ◽  
Carine M. R. Costa ◽  
Natanael Antonio Santos
Keyword(s):  
Eye Tracking ◽  
Organic Vapors ◽  
Gas Station ◽  
Neurocognitive Measures

Evaluation of release kinetics and mitogenic capacity of collagen barrier membranes supplemented with the secretome of activated platelets

2016 ◽  
Author(s):  
Eva-Maria Mozgan ◽  
Michael Edelmayer ◽  
Klara Janjić ◽  
Manuela Pensch ◽  
Michael Fischer ◽  
...  
Keyword(s):  
Release Kinetics ◽  
Barrier Membranes ◽  
Activated Platelets

scholarly journals Bioactivity and corrosion behavior of magnesium barrier membranes

2021 ◽  
Author(s):  
Helga Hornberger ◽  
Hannah Kissel ◽  
Birgit Striegl ◽  
Matthias Kronseder ◽  
Florian Vollnhals ◽  
...  
Keyword(s):  
Corrosion Behavior ◽  
Barrier Membranes

scholarly journals Bone-adhesive barrier membranes based on alendronate-functionalized poly(2-oxazoline)s

2021 ◽  
Author(s):  
María J. Sánchez-Fernández ◽  
Manon Peerlings ◽  
Rosa P. Félix Lanao ◽  
Johan C. M. E. Bender ◽  
Jan C. M. van Hest ◽  
...  
Keyword(s):  
Calcium Binding ◽  
Solvent Free ◽  
Barrier Membranes ◽  
Backing Layer

Novel bone-adhesive barrier membranes were successfully developed using a solvent-free approach by combining an occlusive polyester backing layer with a gelatin carrier impregnated with calcium-binding alendronate-functionalized poly(2-oxazoline)s.

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