카본 분산형 고분자막의 감습 성질

김대욱; 심재준; 이칠원; 공명선; Dae-Uk Kim; Jae-Joon Shim; Chil-Won Lee; Myoung-Seon Gong

Polymer(Korea), Vol.23, No.4, 617-623, July, 1999

Export Citation

카본 분산형 고분자막의 감습 성질

Humidity-Sensitive Properties of Carbon-Dispersed Polymeric Membranes

김대욱, 심재준, 이칠원, 공명선 ^†

단국대학교 화학과

Dae-Uk Kim, Jae-Joon Shim, Chil-Won Lee, and Myoung-Seon Gong^†

Department of Chemistry, Dankook University, Cheonan 330-714, Chugnam, Korea

E-mail:

초록

카본 블랙이 분산된 고분자 결로센서를 poly(1-vinylpyrrolidone-co-acrylic acid) (PVP-AA)와 hydroxypropyl celllulose (HPC)를 최종 열에 의한 가교를 통해 제조하였다. 감습막은 카본/알루미나 전극 기판 위에 마이크로 주사기로 도포하였다. 상대습도에 따른 전기적 성질을 측정하였을 때 카본 블랙의 농도와 감습막을 구성하는 고분자의 비율 그리고 도포량의 변화에 따라서 감습특성은 변화하였다. PVP-AA/HPC=1/1이고 카본의 농도가 85 wt%로 이루어진 감습막의 경우 80%RH 이하에서 임피던스는 ±10 kΩ부근에서 나타났으며 고습 멈위인 85%RH 이상에서는 임피던스가 급격히 증가하여 결로점에서 스위칭 작용을 할 수 있는 결로센서의 제작이 가능하였다. 또한 히스테리시스, 온도 의존성 및 주파수 의존성 등의 전기적 성질을 측정하여 결로센서로서 응용성을 평가하였다.

Carbon-dispersed polymeric dew sensor was prepared from poly(1-vinylpyrrloidone-co-acrylic acid) and hydroxypropyl cellulose, followed by the thermal crosslinking reaction. The humidity-sensitive membranes were fabricated on the carbon/alumina electrode by microsiring injection. It was found that the impedance of humidity-sensitive membrane changed with a concentration of carbon, ratio of PVP-AA to PHC, and thickness of humid membrane. In the case of polymeric membrane composed of PVP-AA/HPC=1/1 and 85 wt% of carbon black, the impedance showed ±10 kΩ within 80%RH and increased sharply above 85%RH. Form this results, the carbon-dispersed dew sensor might be used as an on/off switching system at dew point. In addition, the hysteresis, temperature depnedence and frequency dependence were measured and estimated as a dew sensor.

Keywords:dew sensor;carbon-dispersed humid membrane;hydroxypropyl cellulose;poly(1-vinypyrrloidone-co-acrylic acid)

[References]

"Handbook of Materials and Moisture," p. 151, Kyoritsu Publish (1990)
Dunmore FW, J. Res. Nat. Bur. Std., 20, 723 (1938)
Traversa E, Sens. Actuators B-Chem., 23, 135 (1995)
Ichinose N, Am. Ceram. Soc. Bull., 64, 1581 (1985)
Yamazoe N, Shimizu Y, Sens. Actuator, 10, 379 (1986)
Matsuguchi M, Sadaoka Y, Sakai Y, Kuroiwa T, Ito A, J. Electrochem. Soc., 138, 1862 (1991)
Schroth A, Sager K, Gerlach G, Haberli A, Boltshauser T, Baltes H, Sens. Actuators B-Chem., 34, 301 (1996)
Anchisini R, Faglia G, Gallazzi MC, Sberveglieri G, Zerbi G, Sens. Actuators B-Chem., 35-36, 99 (1996)
Hidikigawa M, Miyoshi S, Sugihara T, Jinda A, Sens. Actuator, 4, 307 (1983)
Sakai Y, Sadaoka Y, Matsuguchi M, J. Electrochem. Soc., 136, 171 (1989)
Paek JS, Lee RY, Park JK, Gong MS, Polym.(Korea), 18(5), 842 (1994)
Kim JT, Paek JS, Gong MS, Polym.(Korea), 19(5), 561 (1995)
Sakai Y, Sadaoka Y, Ikeuchi K, Sens. Actuator, 9, 125 (1986)
Pack CB, Ji DS, Kim ST, Kim HO, Korean Phys. Soc., 3, 324 (1990)
Kim OY, Gong MS, J. Korean Ind. Eng. Chem., 9(4), 554 (1998)

[Related Articles]

[1] "Handbook of Materials and Moisture," p. 151, Kyoritsu Publish (1990)

[2] Dunmore FW, J. Res. Nat. Bur. Std., 20, 723 (1938)

[3] Traversa E, Sens. Actuators B-Chem., 23, 135 (1995)

[4] Ichinose N, Am. Ceram. Soc. Bull., 64, 1581 (1985)

[5] Yamazoe N, Shimizu Y, Sens. Actuator, 10, 379 (1986)

[6] Matsuguchi M, Sadaoka Y, Sakai Y, Kuroiwa T, Ito A, J. Electrochem. Soc., 138, 1862 (1991)

[7] Schroth A, Sager K, Gerlach G, Haberli A, Boltshauser T, Baltes H, Sens. Actuators B-Chem., 34, 301 (1996)

[8] Anchisini R, Faglia G, Gallazzi MC, Sberveglieri G, Zerbi G, Sens. Actuators B-Chem., 35-36, 99 (1996)

[9] Hidikigawa M, Miyoshi S, Sugihara T, Jinda A, Sens. Actuator, 4, 307 (1983)

[10] Sakai Y, Sadaoka Y, Matsuguchi M, J. Electrochem. Soc., 136, 171 (1989)

[11] Paek JS, Lee RY, Park JK, Gong MS, Polym.(Korea), 18(5), 842 (1994)

[12] Kim JT, Paek JS, Gong MS, Polym.(Korea), 19(5), 561 (1995)

[13] Sakai Y, Sadaoka Y, Ikeuchi K, Sens. Actuator, 9, 125 (1986)

[14] Pack CB, Ji DS, Kim ST, Kim HO, Korean Phys. Soc., 3, 324 (1990)

[15] Kim OY, Gong MS, J. Korean Ind. Eng. Chem., 9(4), 554 (1998)