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Glaskapillaren für die Gas‐chromatographie. Verbesserte Erzeugung und Prüfung stabiler Trennflüssigkeitsfilme
Author(s) -
Grob K.
Publication year - 1968
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.660510415
Subject(s) - chemistry , carbonization , wetting , polymerization , polar , gas chromatography , polymer chemistry , chemical engineering , organic chemistry , chromatography , polymer , adsorption , physics , astronomy , engineering
The role of wall coated capillaries in gas chromatography is discussed with emphasis on glass capillaries. Since theoretical knowledge concerning the spreading of liquids on the glass surface is still very insufficient, empirical rules for producing coherent liquid films are proposed. Improvements for the carbonization procedure are reported. Since carbonized glass is suited for a restricted range of moderately polar liquids only, three new modifications of the glass surface opening a broader choice of wettability characteristics are described: (1) Bonding of various organic substituents to the silica frame work. (2) Polymerization and cross linking of butadiene on the glass surface, eventually with engrafted polar groups. (3) Polymerization of trifluorchlorethylene on the glass surface.