Fabrication and characterization of carbon nanotube/graphene/elastomer nanocomposites for stretchable conductor = 탄소나노튜브/그래핀/탄성중합체 나노복합재료를 이용한 신축성 전도체 제조 및 특성평가

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Stretchable conductor is the attractive material due to the conducting property under bending and stretching conditions. For these reasons stretchable conductor is able to operate on arbitrary curved shape. Thus, stretchable conductor can be applied to electronic artificial skin, skin patch sensor, wearable computer and stretchable display. Recently, numerous attempts such as mixing with nanofillers in stretchable matrix to improve the electrical properties of elastomers have been reported. CNTs and graphene are candidate materials as nanofillers because of good electrical properties, high aspect ratio and compatibility with stretchable elastomers. However, these conducting fillers are difficult to disperse in elastomer matrix, causing poor electrical properties and stretchability. To solve these problems, many researches have been conducted surface modification of conductive fillers to enhance the electrical properties of elastomers. Still, these methods have limitation to overcome degradation of quality of conductive fillers and remove residual functional group. In this work, we provide a method to enhance the dispersibility in PDMS elastomer by CNT-graphene hybrid system. This CNT-graphene hybrid system has advantages such as enhancement of electrical connection induced by CNT bridging between graphene sheets and improvement of dispersibility by spacing between conductive fillers CNT/graphene/PDMS stretchable conductors are prepared with various CNT-graphene ratios. Among the composites composed of other ratio, CNT/graphene (9:1)/PDMS nanocomposites show higher conductivity compared to other ratio of nanocomposites at 0.4 wt.% fillers. These results show probability to enhance performance of stretchable conductor by introducing CNT-graphene hybrid system.
Advisors
Jeon, Seok-Wooresearcher전석우
Description
한국과학기술원 : 신소재공학과,
Publisher
한국과학기술원
Issue Date
2013
Identifier
567268/325007  / 020113358
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 신소재공학과, 2013.2, [ vii, 67 p. ]

Keywords

carbon nanotube; 폴리디메틸실록산; 신축성 전도체; 탄성중합체; 그래핀; 탄소나노튜브; graphene; elastomer; stretchbable conductor; pdms

URI
http://hdl.handle.net/10203/197373
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=567268&flag=dissertation
Appears in Collection
MS-Theses_Master(석사논문)
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