Glass critical surface tension determined

Liquids used to determine the critical surface tension of methylated glass... 

Mohandas and co-workers (18), confirming previous findings of Weiss and Blumenson (19), have also shown that cells in an environment free of adsorbable proteins (which rapidly modify the surface properties of polymeric or inorganic substrates) will exhibit a similar direct relationship between their adhesion and the critical surface tension of the surface they contacted. DiflFerential adhesion of red blood cells was measured by determining the fraction of cells retained on a surface after the application of well-calibrated shear stresses (IS). In protein-free experiments, the red cells (themselves dominated in adhesive interactions by their protein membranes) had greatest adhesion to glass, intermediate adhesion to polyethylene and siliconized glass, and least adhesion to Teflon. 

In addition to the above methods, 82 of polymer can be determined from a threshold of sedimentation and by critical opalescence. In recent years the method of inverse gas-liquid chromatography has been used to evaluate 82 of polymers. One may also use some empirical ratios relating solubility parameters of polymers with some of their physical properties, such as, surface tension and glass transition temperature. ... 

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