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  • 05월 20일 18시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제125회 대한화학회 학술발표회 및 총회 Analysis of Hydration Lubricating Properties of Norbornene-Based Bottle-Brush Polymers Synthesized by ROMP and RAFT

등록일
2020년 1월 29일 16시 08분 19초
접수번호
0097
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발표분야
Polymer Chemistry
저자 및
공동저자
Changsik Song*, Hwi Hyun Moon1
Department of Chemistry, Sungkyunkwan University, Korea
1Chemistry, Sungkyunkwan University, Korea

Recently, bottle-brush polymers are widely used for the studies of hydration lubrication due to their unique mechanical and rheological properties, which can be controlled by varying the backbone, the length of the side chain, and the number of branches per molecule or the grafting density. By mimicking lubricin, we synthesized bottle-brush polymers using two polymerization methods: ring opening metathesis polymerization (ROMP) and reversible addition fragmentation chain transfer (RAFT) polymerization. To do so, norbornene and chain transfer agent (CTA) containing monomers (cationic, anionic, or zwitterionic) were used for ROMP and RAFT, respectively. The reactions were carried out by tuning Grubb’s catalyst generation, the concentration of Grubb’s catalyst, the amount of initiator, and solvents. The molecular weight of the synthesized polymer was measured by a gel permeation chromatography (GPC) and calculated percent conversion using NMR. The lubricating properties of the synthesized brush polymers affected by bottle-brush architecture and hydrate state were examined by a nanoindenter and a colloidal probe AFM.


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