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전도성 단량체를 함유한 비공유 개질제 합성 및 비공유 개질된 MWCNT/PEDOT:PSS 나노복합재 제조 및 특성 연구

Title
전도성 단량체를 함유한 비공유 개질제 합성 및 비공유 개질된 MWCNT/PEDOT:PSS 나노복합재 제조 및 특성 연구
Other Titles
Synthesis of non-covalent modifiers containing conductive monomers and characterization of non-covalently functionalized MWCNT/PEDOT:PSS nanocomposites
Author
김영주
Alternative Author(s)
Young Joo Kim
Advisor(s)
강영종
Issue Date
2022. 2
Publisher
한양대학교
Degree
Master
Abstract
In order to investigate the dispersion and electrical properties of multi-walled carbon nanotube (MWCNT) / poly(3,4-ethylenedioxy thiophene) : poly (styrenesulfonate) (PEDOT:PSS) nanocomposites depending on the type of modifiers, PA1E(pyrene-amine-3,4-ethylenedioxythiophene (EDOT)), PE1E (pyrene-ether-EDOT), and PU1E(pyrene-urethane-EDOT) were synthesized. In addition, AnAT(anthracene-amine-thiophene) containing anthracene and thiophene, and PyPI(pyrene-propyl) without conductive monomer were synthesized. Synthesized modifiers were confirmed by 1H, 13C NMR, and Mass spectroscopy, and the surface of MWCNT was functionalized using the synthesized modifiers by non-covalent method. Non-covalently modified MWCNT were confirmed through FT-IR, Raman spectroscopy, and thermogravimetric analysis (TGA). Functionalized MWCNT/PEDOT:PSS nanocomposite solutions were prepared by in-situ polymerization and MWCNT/PEDOT:PSS nanocomposite films were prepared by solvent casting. MWCNT/PEDOT:PSS solutions were characterized depending on the type of modifiers by 4-point probe method, transmittance, and transmission electron microscopy(TEM), respectively. The electrical properties of modified MWCNT PEDOT:PSS nanocomposites were improved by the incorporation of non-covalent modifiers, PA1E, PE1E, and PU1E, resulting in the reduction of sheet resistance. Dispersion properties were also improved because not only non-covalent modifiers could have π–π interaction with the surface of MWCNT, but also in-situ polymerization. Non-covalent modifiers played an important role in enhancing the dispersion and electrical properties of MWCNT in PEDOT:PSS matrix. |다중벽 탄소나노튜브(MWCNT) / poly(3,4-ethylenedioxy thiophene):poly (styrenesulfonate) (PEDOT:PSS) 나노복합체의 개질제 종류에 따른 분산 및 전기적 특성을 알아보기 위해 PA1E(pyrene- 아민-3,4-에틸렌디옥시티오펜(EDOT), PE1E(pyrene-ether-EDOT) 및 PU1E(pyrene-urathane-EDOT)가 합성했다. 또한, anthracene과 thiophene을 포함하는 AnAT(anthracene-amine-thiophene)와 전도성 모노머가 없는 PyPI(pyrene-propyl)를 합성하였다. 합성된 개질제는 1H, 13C NMR, Mass spectroscopy로 확인하였고, MWCNT 표면은 합성된 개질제를 이용하여 비공유법으로 기능화 하였다. 비공유적으로 변형된 MWCNT는 FT-IR, 라만 분광법 및 열중량 분석(TGA)을 통해 확인되었습니다. 기능화된 MWCNT/PEDOT:PSS 나노복합체 용액은 제자리 중합에 의해 제조되었고 MWCNT/PEDOT:PSS 나노복합체 필름은 용매 캐스팅에 의해 제조했다. MWCNT/PEDOT:PSS 용액은 4-point probe (4-point probe method), 투과율, 투과전자현미경(TEM)에 의한 개질제의 종류에 따라 각각 특성을 나타냈다. 개질된 MWCNT PEDOT:PSS 나노복합체의 전기적 특성은 비공유 개질제인 PA1E, PE1E 및 PU1E로 개질된 MWCNT의 면저항이 감소했다. 비공유 개질제는 MWCNT 표면과 π-π 상호작용을 가질 수 있을 뿐만 아니라 제자리 중합도 할 수 있기 때문에 분산 특성도 향상했다. 비공유 개질제는 PEDOT:PSS 매트릭스에서 MWCNT의 분산 및 전기적 특성을 향상시키는 데 중요한 역할을 했다고 판단한다.
URI
http://hanyang.dcollection.net/common/orgView/200000590426https://repository.hanyang.ac.kr/handle/20.500.11754/167586
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GRADUATE SCHOOL[S](대학원) > CHEMISTRY(화학과) > Theses (Master)
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