Organic-inorganic hybrid coating films have been used to increase the transmittance and enhance the physical properties of plastic substrates. Sol-gel organic-inorganic thin films were fabricated on polymethylmethacrylate (PMMA) substrates using a dip coater. Metal alkoxide precursor tetraethylsilicate (TEOS) and alkoxy silanes including decyltrimethoxysilane (DTMS), 3-glycidoxypropyltrimethoxysilane (GPTMS), phenyltrimethoxysilane (PTMS), 3-(trimethoxysilyl)propyl methacrylate (TMSPM) and vinyltrimethoxysilane (VTMS) were used to synthesize sol-gel hybrid coating solutions. Sol-gel synthesis was confirmed by the results of FT-IR. Cross-linking of the Si-O-Si network during synthesis of the sol-gel reaction was confirmed. The effects of each alkoxy silane on the coating film properties were investigated. All of the organicinorganic hybrid coatings showed improved transmittance of over 90 %. The surface hardness of all coating films on the PMMA substrate was measured to be 4H or higher and the average thickness of the coating films was measured to be about 500 nm. Notably, the TEOS/DTMS coating film showed excellent hydrophobic properties, of about 97°.

Abstract
1. 서 론
2. 실험 방법
    2.1. 유무기 하이브리드 코팅액 합성
    2.2. 유무기 하이브리드 코팅막 제조
    2.3. 특성분석
3. 결과 및 고찰
    3.1. 유무기 하이브리드 코팅액 특성 분석
    3.2. 유무기 하이브리드 코팅막 특성 분석
4. 결 론
Acknowledgement
References
<저자소개>

• 조승원(한국세라믹기술원 디스플레이소재센터, 한양대학교 공과대학 신소재공학부) | Seungwon Cho (Display Material Center, Korea Institute of Ceramic Engineering and Technology, Jinju 52851, Republic of Korea, Department of Material Science Engineering, Hanyang University, Seoul 04763, Republic of Korea)
• 김다빈(한국세라믹기술원 디스플레이소재센터) | Dabin Kim (Display Material Center, Korea Institute of Ceramic Engineering and Technology, Jinju 52851, Republic of Korea)
• 이지선(한국세라믹기술원 디스플레이소재센터) | Ji-Sun Lee (Display Material Center, Korea Institute of Ceramic Engineering and Technology, Jinju 52851, Republic of Korea)
• 신동욱(한양대학교 공과대학 신소재공학부) | Dongwook Shin (Department of Material Science Engineering, Hanyang University, Seoul 04763, Republic of Korea)
• 김진호(한국세라믹기술원 디스플레이소재센터) | Jinho Kim (Display Material Center, Korea Institute of Ceramic Engineering and Technology, Jinju 52851, Republic of Korea) Corresponding author