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  • 09월 08일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Further study of PEEK encased monolith frits resulting upgraded separation performance in LC

2015년 9월 2일 14시 26분 30초
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금 15시 : 06분
분석화학 - Oral Presentation of Young Analytical Chemists II
저자 및
박신영, 정원조*
인하대학교 화학과, Korea
As a stream of studying for development of disposable HPLC column, our research group has been studying the technique of polymer encased monolith frits. It is very useful and novel technique owing to its reasonable price and potential of being further improved in a terms of theoretical number of plates. Thus, we have carried out some modification in the physical dimension of monolith frits encased in polymer tubing. To reduce the void volume of frit, the I.D. of poly ether ether ketone (PEEK) tubing was reduced from 500 um of the previous study to 250 um in this study. Catalyst assisted sulfornation of PEEK tubing and reaction with glycidyl methacrylate (GMA) were adopted again to improve the bonding strength between the monoltih core and the tubing inner surface. After sulfornation and anchoring of double bonds, the tubing was filled with a reaction mixture of lauryl methacryltate (LMA), ethylene glycol dimethacrylate (EDMA), initiator, and porogenic solvent. After in-situ polymerization, the tubing was thoroughly washed. Finally, it was ready to be used as frit element after cutting into thin slices. To check the frit performance comparatively, the packed columns installed with a PEEK encased frit of 250 um I.D., a PEEK encased frit of 500 um I.D., and a commercial stainless steel screen frit (1.6 mm I.D.), respectively, at the column outlet union, have been prepared. The separation efficiency with a monolith frit of 250 ㎛ I.D. showed the best results.