Abstract
The properties of poly(ethylene glycol) 20M (PEG 20M) on the silanized surface of Chromosorb W HMDS were investigated. Using “inverse” gas chromatography and x-ray diffraction methods it was found that on this surface PEG 20M is divided into two forms: a surface layer for τ below 0.105 of PEG 20M and an excess over the surface layer for loadings characterized by τ greater than 0.105 (τ is the ratio of the amount of stationary phase to the amount of uncoated support).
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