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Hawick Chriswanto
Research and Development Centre for Oil and Gas Technology "LEMIGAS"
Chemical Engineering, Chemistry & Bioengineering Energy

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EFFECT OF MOBILE PHASE COMPOSITION ON THE SELECTIVITY OF CHROMATOGRAPHY COLUMNS WHICH USE POLYPYRROLE AS THE STATIONARY PHASE Hawick Chriswanto
Scientific Contributions Oil and Gas Vol 25 No 1 (2002)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.25.1.1064

Abstract

Chromatography columns packed with polymeric stationary phase have been prepared. The packing materials were prepared by depositing polypyrrole chloride or polypyrrole dodecylsulfate onto silica particles. The deposition was accomplished by chemical oxidative polymerisation. Chromatographic selectivity of the columns was examined under reversed-phase condition using pairs of test compounds with known functionalities as the probes. The results showed that if hydrophobic interactions were dominant, the selectivity increased with decreasing in organic fraction in the mobile phase, and vise versa.
CHROMATOGRAPHIC CHARACTERISATION OF POLYPYRROLE-BASED CONDUCTIVE POLYMER Hawick Chriswanto
Scientific Contributions Oil and Gas Vol 22 No 1 (1999)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.22.1.1092

Abstract

A chromatographic study on the properties of polypyrrole-based conductive polymers has been carried out. The polymers were chemically axidantively prepared and coated directly onto silica particles and packed under high pressure into stainless steel chromatography columns. A series of small molecules were used as test compounds and chromatographic measurements were performed under reserved phase condition. The study revealed the properties of the polymers, such as their hydrophobicity, which were deduced from their behaviour in the interactions with the test compounds.
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