TY - JOUR
T1 - Preparation of thermally stable phenylpolysiloxane fused silica capillary columns : optimization and evaluation of the deactivation by capillary GC and solid state 29Si NMR
AU - Wu, Quanji
AU - Hetem, M.J.J.
AU - Cramers, C.A.M.G.
AU - Rijks, J.A.
PY - 1990
Y1 - 1990
N2 - The deactivation of fused silica capillary columns with a laboratory-made poly-diphenylvinylmethylhydrosiloxane copolymer has been investigated. The deactivation obtained at different temperatures and reaction times is characterized with a dual column capillary GC system [1]. In parallel, the effect of the silylation temperatures and reaction times on the nature, the structure, and the chemical properties of the deactivation layer has also been studied by solid-state 29Si NMR spoctroscopy. A fumed silica, Cab-O-Sil M5, was used as a model substrate for these spectroscopic studies.
The deactivated fused silica capillaries show an excellent thermal stability (up to 400°C), a high resistance to solvolysis, and a minimal interaction to various critical test components. A good wettability of the fused silica capillary columns deactivated with this reagent was confirmed by successful subsequent coating with polysiloxanes with different phenyl contents
AB - The deactivation of fused silica capillary columns with a laboratory-made poly-diphenylvinylmethylhydrosiloxane copolymer has been investigated. The deactivation obtained at different temperatures and reaction times is characterized with a dual column capillary GC system [1]. In parallel, the effect of the silylation temperatures and reaction times on the nature, the structure, and the chemical properties of the deactivation layer has also been studied by solid-state 29Si NMR spoctroscopy. A fumed silica, Cab-O-Sil M5, was used as a model substrate for these spectroscopic studies.
The deactivated fused silica capillaries show an excellent thermal stability (up to 400°C), a high resistance to solvolysis, and a minimal interaction to various critical test components. A good wettability of the fused silica capillary columns deactivated with this reagent was confirmed by successful subsequent coating with polysiloxanes with different phenyl contents
U2 - 10.1002/jhrc.1240131204
DO - 10.1002/jhrc.1240131204
M3 - Article
SN - 0935-6304
VL - 13
SP - 811
EP - 816
JO - Journal of High Resolution Chromatography
JF - Journal of High Resolution Chromatography
IS - 12
ER -