Study on humidity sensing property based on TiO2 porous film and polystyrene sulfonic sodium

TiO2 and polystyrene sulfonic sodium (NaPSS) composite film humidity sensors were prepared through dip-coating method. The polystyrene sulfonic sodium (NaPSS) was dip-coated onto the surface of TiO2 porous film on alumina substrate to fabricate the humidity sensor. The electrical properties of the sensor were measured. The TiO2/NaPSS composite film exhibited better sensing properties than the pure polymer NaPSS humidity sensor, such as smaller hysteresis and quicker response-recovery time.

[1]  Yang Li,et al.  Humidity sensitive properties of crosslinked and quaternized poly(4-vinylpyridine-co-butyl methacrylate) , 2005 .

[2]  P. Su,et al.  Humidity sensor based on PMMA simultaneously doped with two different salts , 2006 .

[3]  Mujie Yang,et al.  Investigations on the ion transport mechanism in conducting polymer films , 2000 .

[4]  Yang Li,et al.  A NOVEL RESISTIVE HUMIDITY SENSOR BASED ON SODIUM POLYSTYRENESULFONATE/TiO2 NANOCOMPOSITES , 2002 .

[5]  P. Su,et al.  A resistive-type humidity sensor using composite films prepared from poly(2-acrylamido-2-methylpropane sulfonate) and dispersed organic silicon sol. , 2005, Talanta.

[6]  Peter W. Thorne,et al.  Attribution of observed surface humidity changes to human influence , 2007, Nature.

[7]  Yanhong Luo,et al.  Rapidly infrared-assisted cooperatively self-assembled highly ordered multiscale porous materials. , 2008, Journal of the American Chemical Society.

[8]  T. Tseng,et al.  Electrical Properties of Porous Titania Ceramic Humidity Sensors , 1989 .

[9]  S. Ruan,et al.  Preparation and electrical properties of humidity sensing films of BaTiO3/polystrene sulfonic sodium , 2003 .

[10]  Syed Khasim,et al.  Electrical and humidity sensing properties of polyaniline/WO3 composites , 2006 .

[11]  W. Cai,et al.  Morphology‐Controlled Growth of Large‐Area Two‐Dimensional Ordered Pore Arrays , 2004 .

[12]  Y. Li,et al.  Humidity sensors using in situ synthesized sodium polystyrenesulfonate/ZnO nanocomposites. , 2004, Talanta.

[13]  V. Bondarenka,et al.  Thin films of poly-vanadium-molybdenum acid as starting materials for humidity sensors , 1995 .

[14]  A. Vijayan,et al.  Evaluation of co-polyaniline nanocomposite thin films as humidity sensor. , 2008, Talanta.

[15]  Joseph R. Stetter,et al.  Humidity sensing properties of Nation and sol-gel derived SiO2/Nafion composite thin films , 1997 .

[16]  P. Su,et al.  Humidity sensors based on TiO2 nanoparticles/polypyrrole composite thin films , 2007 .

[17]  Noboru Yamazoe,et al.  Humidity sensors: Principles and applications , 1986 .

[18]  Wei Zheng,et al.  Highly sensitive and stable humidity nanosensors based on LiCl doped TiO2 electrospun nanofibers. , 2008, Journal of the American Chemical Society.

[19]  Sudha V. Bhoraskar,et al.  Humidity sensing with weak acid-doped polyaniline and its composites , 2003 .

[20]  Jing Wang,et al.  Humidity sensors based on composite material of nano-BaTiO3 and polymer RMX , 2002 .

[21]  Enrico Traversa,et al.  Ceramic sensors for humidity detection: the state-of-the-art and future developments , 1995 .

[22]  Dewyani Patil,et al.  Humidity sensitive poly(2,5-dimethoxyaniline)/WO3 composites , 2008 .