Dielectric Property of Hydrophilic Copolymer Thin Films

친수성 고분자 박막의 유전 특성

  • Choi, Seung-Ryul (Information & Electronic Materials Research, Samyang R&D Center) ;
  • Im, Kyung-Jin (Information & Electronic Materials Research, Samyang R&D Center) ;
  • Kim, Jun-Young (Information & Electronic Materials Research, Samyang R&D Center)
  • 최승렬 (삼양사 중앙연구소 정보전자소재팀) ;
  • 임경진 (삼양사 중앙연구소 정보전자소재팀) ;
  • 김준영 (삼양사 중앙연구소 정보전자소재팀)
  • Published : 2007.06.21

Abstract

In this study, HEMA-based hydrophilic copolymers were synthesized and dielectric constant (K) of the polymer thin films were investigated by change hydroxyl group (-OH) ratio in the polymer chain. The different hydroxyl group ratios were characterized by FT-IR and its thin films were obtained by spin coating. As a result, due to the moisture absorption of the hydrophilic thin film, the dielectric constant has been increased as was expected. The highest dielectric constant (K=4.19, @1MHz) was observed at 40% hydroxyl group ratio among the several polymers.