Humidity sensing properties of the vinylpyridine-butyl acrylate-styrene copolymers

Wu, Shuizhu; Zhu, Yinlan; Li, Fengxian; Shen, Jing

doi:10.1002/(sici)1097-4628(19991121)74:8<1992::aid-app13>3.0.co;2-f

Cited by 9 publications

(5 citation statements)

References 14 publications

(7 reference statements)

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“…Later, Sakai et al designed a cross-linked hydrophilic polymer films to form interpenetrated polymer networks (IPN) with a hydrophobic polymer, to make the hydrophilic polymer films more stable and durable in a high humidity ambience [ 105 ]. Copolymerization of hydrophilic or hydrophobic monomers with other hydrophobic monomers, and the influence of different parameters on the performance of cross-linked quaternized polyelectrolytes membranes have been further reported in [ 153 , 154 ].…”

Section: Impedance Type Humidity Sensors (Resistive)mentioning

confidence: 99%

Humidity Sensors Principle, Mechanism, and Fabrication Technologies: A Comprehensive Review

Farahani

Wagiran

Hamidon

2014

Sensors

1,018

562

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Humidity measurement is one of the most significant issues in various areas of applications such as instrumentation, automated systems, agriculture, climatology and GIS. Numerous sorts of humidity sensors fabricated and developed for industrial and laboratory applications are reviewed and presented in this article. The survey frequently concentrates on the RH sensors based upon their organic and inorganic functional materials, e.g., porous ceramics (semiconductors), polymers, ceramic/polymer and electrolytes, as well as conduction mechanism and fabrication technologies. A significant aim of this review is to provide a distinct categorization pursuant to state of the art humidity sensor types, principles of work, sensing substances, transduction mechanisms, and production technologies. Furthermore, performance characteristics of the different humidity sensors such as electrical and statistical data will be detailed and gives an added value to the report. By comparison of overall prospects of the sensors it was revealed that there are still drawbacks as to efficiency of sensing elements and conduction values. The flexibility offered by thick film and thin film processes either in the preparation of materials or in the choice of shape and size of the sensor structure provides advantages over other technologies. These ceramic sensors show faster response than other types.

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Section: Impedance Type Humidity Sensors (Resistive)mentioning

confidence: 99%

Humidity Sensors Principle, Mechanism, and Fabrication Technologies: A Comprehensive Review

Farahani

Wagiran

Hamidon

2014

Sensors

1,018

562

View full text Add to dashboard Cite

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“…It is important to exploit novel humidity sensitive materials for the development of the humidity sensors. In recent years, many efforts have been made to fabricate the proper polymers for humidity sensors 5–10. Compared with the other conducting polymers, polypyrrole has relative high conductivity and environmental stability.…”

Section: Introductionmentioning

confidence: 99%

Humidity sensitivity of polypyrrole and polypyrrole/SBA‐15 host–guest composite materials

Geng

et al. 2006

J of Applied Polymer Sci

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Polypyrrole (PPY) and PPY/SBA-15 hostguest composite materials have been prepared using chemical synthesis route and characterized by XRD, IR, N 2 adsorption-desorption isotherms, and SEM. The humidity sensitive properties (HSP) of this kind of materials have been studied by analyzing the variation curve of impedance as a function of relative humidity. It was found that the PPY/SBA-15 host-guest composites materials exhibit better HSP than that of the corresponding pure PPY.

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“…Amine-containing polyelectrolytes were prepared by Lee et al [96] with The reduction of water solubility can be obtained with the application of hydrophobic groups by grafting or by the co-polymerization in order to apply a protective film [95,78,91] or by cross-linking reaction [97,92,98]. Copolymerization of hydrophilic or hydrophobic monomers with other hydrophobic monomers and the influence of different parameters on the performance of cross-linked quaternized polyelectrolyte films have been studied by Wu et al [99] and by Casalbore-Miceli et al [100].…”

Section: Characteristics and Properties Of Rh Nanostructured Polymer-mentioning

confidence: 99%

Role of nanostructured polymers on the improvement of electrical response-based relative humidity sensors

Fratoddi

Bearzotti²,

Venditti

et al. 2016

Sensors and Actuators B: Chemical

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Nanostructured polymers, with different morphologies and different spatial organizations, have found, in last few years, a wide range of uses in humidity sensors, as a viable alternative to ceramic or semiconducting materials and to oxides (perovskite) compounds. Their enhanced sensitivity towards external stimuli has made them ideal candidates in the design of humidity sensors. This is mainly due to the fact that nanostructured polymers, when embedded with different content of water, represent a heterogeneous system whose dielectric and conductometric properties varies over a wide range, resulting in advantageous sensitive material in resistive-type or capacitive-type humidity sensors. The most notable property of nanostructured polymers is their inherent electrical behavior which is closely connected to the presence of heterogeneities at a nano- or micro-scale level. In the first part of this paper, we discuss and justify, on the basis of the dielectric theory of heterogeneous systems, how the dielectric properties of nanostructured polymers, independently of their chemical nature, could vary as a consequence of a different amount of water adsorption, meeting the basic requirement of any humidity sensor device. In particular, we have analyzed systems with different porosity and different pore interconnections to cover the most part of the structural arrangements and morphologies nanostructured polymers give rise. In the second part of the paper, we present some remarkable examples of nanostructured polymers employed in the fabrication of humidity sensors based on changes in the electrical properties (permittivity and electrical conductivity) upon exposure to moisture, highlighting the main features that make them suitable for sensors, with specific emphasis to characteristic parameters, such as sensitivity, response time, hysteresis and durability

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Humidity sensing properties of the vinylpyridine-butyl acrylate-styrene copolymers

Cited by 9 publications

References 14 publications

Humidity Sensors Principle, Mechanism, and Fabrication Technologies: A Comprehensive Review

Humidity Sensors Principle, Mechanism, and Fabrication Technologies: A Comprehensive Review

Humidity sensitivity of polypyrrole and polypyrrole/SBA‐15 host–guest composite materials

Role of nanostructured polymers on the improvement of electrical response-based relative humidity sensors

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