Article
  • Study on the Hybrid Dual-functioning Application of Urethane Foam Modified with Graphene Oxide and Polypyrrole for an Electrode Scaffold as Well as Chemical Sensor

  • Hyeon-Jin Cho, Young-Ju Noh, Eun-Young Jin, and Jin-Heong Yim†

  • Division of Advanced Materials Engineering, Kongju National University, 1223-24 Cheonandaero, Cheonan, Chungnam 31080, Korea

  • 그래핀 옥사이드와 폴리피롤로 개질된 우레탄 폼의 전극 지지체 및 화학 센서로 하이브리드 이중 기능화 연구

  • 조현진 · 노영주 · 진은영 · 임진형†

  • 공주대학교 공과대학 신소재공학부

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.

Abstract

In this study, three kinds of flexible and electrically conductive polyurethane foam (PUF) composites (PUF-GO, PUF-PPy, PUF-PPy-GO) were prepared using vapor phase polymerization of pyrrole and the impregnation of graphene oxide (GO) processes. It was confirmed that control of the electro-mechanical properties of the composite by changing the shape of the conductive layer was formed differently depending on the manufacturing process of the conductive PUF composites. The prepared PUF composites were evaluated for hybrid dual-functional applications (chemical sensors and supercapacitance electrode supports) to investigate potentials for various application fields. PUF-PPy-GO composite shows good performance as a chemical sensor, showing the best ammonia gas sensing characteristics and excellent selectivity for other electron-donating chemical gases. It is believed that this is because the electrically conductive layer composed of PPy and GO is uniformly formed on the inner surface of the porous composite. In addition, as a result of application as an electrode support for supercapacitors, the specific area capacitance (22.2 mFcm-2) of PUF-PPy-GO was the highest, which was about 10 times higher than that of the PUF-GO composite (2.5 mFcm-2). It is considered that the PUF-PPy-GO composite would provide a facile path for smooth exchange with electrolyte ions during the charging·discharging process.


폴리우레탄폼(polyurethane foam, PUF)에 피롤 단량체의 기상 중합 및 graphene oxide(GO) 함침 유무를 달리하여 유연하고 전기 전도성을 가지는 세가지 PUF 복합체(PUF-GO, PUF-PPy, PUF-PPy-GO)를 제조하였다. 전도성PUF 복합체를 제조하는 공정에 따라 전도층의 형태가 다르게 형성되어 복합체의 전기-기계적 특성을 조절할 수 있다는 것을 확인할 수 있었다. 제조된 PUF 복합체는 다양한 응용분야의 적용가능성을 살펴보기 위하여 화학센서와 슈퍼커패시턴스의 전극 지지체로의 성능을 고찰해 보았다. 제조된 PUF 복합체 중에서 PUF-PPy-GO 복합체가 화학센서로서 가장 우수한 NH3 가스의 감지 특성을 보여주었으며 다른 전자공여 화학가스에 대한 선택도도 뛰어났다. 이것은 다공성 복합체 내부 표면에 PPy와 GO로 구성된 전기전도층이 균일하게 형성되어 있기 때문이라고 판단된다. 또한, 슈퍼 커패시터의 전극 지지체로 응용해 본 결과, PUF-PPy-GO의 비면적 정전용량(22.2 mFcm-2)이 가장 컸으며 PUF-GO의 경우(2.5 mFcm-2)보다 10배가량 높았다. 이것은 높은 전도도를 가지는 PUF-PPy-GO 복합체가 충·방전시에 전해질 이온과의 교류를 원활하게 하기위한 경로를 제공하기 때문이라고 생각된다.


Keywords: supercapacitor, chemical sensor, vapor phase polymerization, urethane foam, graphene oxide.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2023; 47(4): 453-462

    Published online Jul 25, 2023

  • 10.7317/pk.2023.47.4.453
  • Received on Feb 15, 2023
  • Revised on Apr 19, 2023
  • Accepted on Apr 19, 2023

Correspondence to

  • Jin-Heong Yim

  • Division of Advanced Materials Engineering, Kongju National University, 1223-24 Cheonandaero, Cheonan, Chungnam 31080, Korea

  • E-mail: jhyim@kongju.ac.kr