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Title of article :
Catalyst assisted synthesis of initiator attached silica monolith particles via isocyanate-hydroxyl reaction for production of polystyrene bound chromatographic stationary phase of excellent separation efficiency
Author/Authors :
Ali، نويسنده , , Faiz and Kim، نويسنده , , Yune Sung and Lee، نويسنده , , Jin Wook and Cheong، نويسنده , , Won Jo، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
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Abstract :
Dibutyltin dichloride (DBTDC) was used as a catalyst to chemically bind 4-chloromehtylphenylisocynate (4-CPI) to porous monolithic silica particles via isocyanate-hydroxyl reaction, and the reaction product was reacted with sodium diethyldithiocarbamate (SDDC) to yield initiator attached silica monolith particles. Reversible addition-fragmentation transfer (RAFT) polymerization was taken place on them to result in polystyrene attached silica particles that showed excellent separation efficiency when packed in a chromatographic column (1.0 mm × 300 mm). The numbers of theoretical plates (N) of 56,500 is better than those of any commercially available HPLC or UHPLC column yet.
Keywords :
RAFT polymerization , Excellent high separation efficiency , Polystyrene bonded phase , Initiator attached silica particles , Catalyzed isocyanate-hydroxyl reaction
Journal title :
Journal of Chromatography A
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Link To Document :