• Title/Summary/Keyword: 셀룰로오스 종이

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Cellulose piezoelectric paper: Characteristics and Its Possibility for Acoustic Applications (셀룰로오스 압전종이의 특성 및 음향응용 가능성)

  • Kim, Jae-Hwan;Kim, Jung-Hwan;Lee, Sang-Woo;Kim, Heung-Soo
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2008.04a
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    • pp.480-483
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    • 2008

  • This paper reports a piezoelectric paper made with cellulose. Since cellulose has merits in terms of biodegradability, biocompatibility, abundance in nature, lightweight and cheap, piezoelectric paper can bring a broad technological impact in many areas, for example, sensors, actuators, speakers, microphones and microelectromechanical systems. Fabrication and characterization of the piezoelectric paper are illustrated and its possibility for acoustic applications is addressed with some preliminary device demonstrations.

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Nerve-Agent Selective Chemiresistors Fabricated by Oxime Decorated Polypyrrole Layer on Cellulose Paper (셀룰로오스 종이 상에 Oxime 도입된 polypyrrole 층을 제조한 신경작용제 선택적 화학저항 센서)

  • Changhoon Jeon;Taihwan Ha
    • Journal of the Korea Institute of Military Science and Technology
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    • v.27 no.4
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    • pp.528-534
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    • 2024

  • In continuous research of detecting highly toxic chemical warfare agents to ensure preparedness for the future battlefield, flexible and wearable sensor platforms with high sensitivity are still demanding. Herein we demonstrate a facile fabrication of polypyrrole-based chemiresistors on cellulose paper for the detection of nerve gas simulants. In order to optimize electrical properties of sensor platform, conducting polymer made of polypyrrole were first synthesized on flexible cellulose paper and interdigitated electrodes were formed thereon. Following confirmation of polypyrrole and/or oxime moiety through FT-IR analyses, electrical characteristics were measured in the various ratio of monomers between simple pyrrole and oxime-modified one. Typically for the optimized chemiresistor(2:8 molar ratio of simple pyrrole and oxime-modified one), eleven species of chemical warfare agents were examined and enhanced conductivity(104~105 order) was observed for three simulants(diethyl cyanophosphonate, diisopropyl fluorophosphonate and diethyl chlorophosphonate), which was mainly attributed to intermolecular hydrogen bonding, while no significant responses was recorded against sixteen common volatile organic chemicals.

  • https://doi.org/10.9766/KIMST.2024.27.4.528 인용 PDF