PVA의 첨가에 의한 CVD 그래핀상 PEDOT : PSS의 코팅성 향상

박민의; 신채연; 김혜지; 김승연; 최영주; 정대원; Min Ui Park; Chaeyeon Shin; Hyeji Kim; Seung Yeon Kim; Young Ju Choi; Dae-won Chung

Applied Chemistry for Engineering, Vol.29, No.6, 734-739, December, 2018

DOI10.14478/ace.2018.1082 Export Citation

PVA의 첨가에 의한 CVD 그래핀상 PEDOT : PSS의 코팅성 향상

Improved Coating of PEDOT : PSS onto CVD Graphene by the Addition of PVA

박민의, 신채연, 김혜지, 김승연¹, 최영주¹, 정대원 ^†

수원대학교 공과대학 신소재공학과
¹(주)에버켐텍

Min Ui Park, Chaeyeon Shin, Hyeji Kim, Seung Yeon Kim¹, Young Ju Choi¹, and Dae-won Chung^†

Department of Polymer Engineering, College of Engineering, Suwon University, Suwon 18323, Korea
¹EverChemTech Co., Ltd, 38, Cheongwonsandan 7-gil, Mado-myeon, Hwaseong-si, Gyeonggi-do, Korea

E-mail:

초록

PVA를 PEDOT : PSS에 첨가해줌으로써 CVD 그래핀 상에 효과적으로 코팅할 수 있었다. PVA의 검화도 및 분자량에 따른 코팅성 및 필름의 전기적 특성을 검토한 결과, DS는 89%, 분자량은 100,000 gmol-1 이하인 것이 바람직하였다. 또한, PVA의 첨가량은 PEDOT : PSS의 고형분 대비 5%가 최적으로 나타났다. 이와 같은 PVA를 사용하여 PEDOT : PSS를 CVD 그래핀 위에 코팅한 필름은 CVD 그래핀 필름에 비해서 표면조도, 부착성, 굴곡 내구성 및 고온(160 ℃)에서의 저항 안정성 등이 현저하게 개선되는 것으로 나타났다.

We successfully coated poly(3,4-ethylenedioxythiophene) : poly(styrene sulfonate) (PEDOT : PSS) on CVD graphene by adding poly(vinyl alcohol) (PVA) to PEDOT : PSS. Extensive studies on the wettability of coating solutions and electrical properties of formed films led us to conclude that PVA with 89% of the degree of saponification and the molecular weight of less than 100,000 gmol-1 produced optimum results. Furthermore, the optimum content of PVA was found to be 5% of PEDOT : PSS by the solid weight. The film coated by PEDOT : PSS with PVA on CVD graphene displayed a conspicuous improvement in the surface roughness, adhesive property, bending durability and stability in resistance at 160 ℃, compared to those of using CVD graphene films.

Keywords:CVD graphene;PEDOT : PSS;PVA;bilayer film

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[3] Lee C, Wei X, Kysar JW, Hone J, Science, 321, 385 (2008)

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[11] Groenendaal BL, Jonas F, Freitag D, Pielartzik H, Reynolds JR, Adv. Mater., 12(7), 481 (2000)

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