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학술발표회초록보기

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  • 09월 04일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Separation and Characterization of Stereoisomeric Polylactides using Electrospray Ionization Ion Mobility Mass Spectrometry

등록일
2014년 9월 4일 17시 25분 01초
접수번호
1527
발표코드
ANAL2-1 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 13시 : 30분
발표형식
심포지엄
발표분야
분석화학 - Recent Developments in Chemical Analysis Methods
저자 및
공동저자
김준곤
포항공과대학교(POSTECH) 화학과, Korea
The separation and characterization of stereo-isomers of polylactide (PLA), synthesized by ring-opening polymerization of cyclic lactide dimer, are carried out using electrospray ionization ion mobility mass spectrometry (ESI-IM-MS) combined with molecular dynamics (MD) simulations. The IM-MS analysis shows intriguing difference between the collision cross section (ΩD) value of poly-L-lactide (PLLA) and poly-LD-lactide (PLDLA) with respect to chain architecture (linear vs. ring) and stereo-regularity. It further seeks to investigate an experimentally observed intriguing difference between the mobility values of PLLA and PLDLA ions with respect to their chain architecture and stereoregularity using computational modeling. The hydrogen bond interaction is affected to the structure, morphology, and physical properties of PLA. The degree of crystallization of PLA is highly related to their weak hydrogen bond interaction. The potential application of IM-MS to separate and characterize stereo-isomeric polymers will be further discussed.

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