| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Electrospun Polyurethane Nanofiber Webs with Carbon Black Powder for Highly Sensitive and Low Hysteresis Piezocapacitive Sensor |
| 초록 |
Electrospun TPU nanowebs have been used as piezocapacitive sensors which can be applied for monitoring static pressures. However, it still requires further improvements in vicat softening temperature and elastic recovery for capacitive sensor applications. In our previous study, crosslinked TPU nanoweb-based sensors have been proposed in order to overcome the drawbacks, but their applications are still restricted due to large hysteresis. Therefore, novel polyurethane (PU) having chemical structure quite different from previous TPU was electrospun into nanofiber. Moreover, carbon black powder was added in PU dope solution to increase the sensitivity of sensor to pressure, which induced very large as well as linear change of capacitance with applied pressure. Hysteresis of the sensor was assessed through measuring the capacitance values during 20 cyclic loading and unloading and was improved significantly from 7.8% to 1.6%. Creep and stress relaxation behaviors were also tested. |
| 저자 |
Reza Mohammad Shamim, 김홍두, 설유리
|
| 소속 |
Kyung Hee Univ. |
| 키워드 |
electro-spinning; polyurethane (PU); carbon black; hysteresis
|
| E-Mail |
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