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제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Bioinspired Catecholic Primers for Rigid and Ductile Dental Resin Composites

2017년 8월 22일 17시 50분 40초
POLY.P-8 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 20일 (금요일) 13:00~14:30
Polymer Chemistry
저자 및
Eeseul Shin, Sung Won Ju1, Larry An1, Jin Soo Ahn1,*, Kollbe Ahn1,*, Byeong-Su Kim*
Department of Chemistry, Ulsan National Institute of Science and Technology, Korea
1Marine Science Institute, University of California, Korea
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승인 4건
In the construction of dental restorative polymer composite materials, surface priming on mineral fillers is essential to improve the mechanical performance of the composites. Here we present bioinspired catechol-functionalized primers (catechol-spacer-methacrylate) for a tougher dental resin composite containing glass fillers. Catecholic primers with different end groups were designed and then coated on glass surfaces using a simple drop-casting or dip-coating process. The surface binding ability and possible crosslinking (coupling or chemical bridging between the glass substrate and the dental resin) of the catecholic bifunctional primers were evaluated using atomic force microscopy, contact angle measurements, and the knife shear bonding test and compared to a state-of-the-art silane-based coupling agent. Various mechanical tests including shrinkage and compression tests of the dental resin composites were also conducted. Compression tests of the composites containing the catecholic primed fillers exhibited enhanced mechanical properties, owing to the bidentate hydrogen bonding of catechol moieties to the oxide mineral surface. Furthermore, the superior biocompatibility of the primed surface was confirmed via cell attachment assay, thus providing applicability of catecholic primers for practical dental and biomedical applications.