Analysis and Comparison of Vapor and Liquid Deposition of Pyrrole on Wool Fiber

2009 ◽  
Vol 87-88 ◽  
pp. 468-473 ◽  
Author(s):  
Xin Jin ◽  
Yong Yue Wang ◽  
Chang Fa Xiao
Keyword(s):  
Vapor Phase ◽  
Room Temperature ◽  
Oxidative Polymerization ◽  
Composite Fiber ◽  
Granular Structure ◽  
Deposition Technique ◽  
Electrical Stability ◽  
Vapor Phase Deposition ◽  
Liquid Deposition

Polypyrrole/wool composite fiber was prepared by in situ oxidative polymerization from vapor phase and liquid phase pyrrole at room temperature, by using FeCl3 as catalyst. The effect of deposition technique on the surface morphology, mechanical properties and the electrical stability of fibers were discussed. The result showed that deposition technique has a strong effect and fiber prepared by vapor phase deposition has much fine and small granular structure, lower resistance, better mechanical property and electrical stability.

Effect of Deposition Polymerization Technique of Pyrrole on Properties of UHMWPE Fiber

2012 ◽  
Vol 476-478 ◽  
pp. 1374-1378
Author(s):  
Wen Yu Wang ◽  
Xin Jin ◽  
Yu Feng Zhang
Keyword(s):  
Mechanical Properties ◽  
Surface Roughness ◽  
Vapor Phase ◽  
Granular Structure ◽  
Deposition Technique ◽  
Electrical Stability ◽  
Uhmwpe Fiber ◽  
Vapor Phase Deposition ◽  
Uhmwpe Fibers ◽  
Ultra High Molecular Weight

The two deposition polymerization techniques, i.e. vapor phase and liquid phase pyrrole deposition polymerization were applied to Ultra-high-molecular-weight polyethylene (UHMWPE) fiber in this paper. The effect of deposition technique on the surface morphology, mechanical properties, electrical stability and surface roughness of fibers were discussed. The result showed that deposition technique has a strong effect on the properties of UHMWPE fibers. Fibers treated by vapor phase deposition polymerization has much fine and small granular structure, lower resistance, better mechanical property and higher surface roughness value.

A Study on the Properties of Polypyrrole Coated Polyester Fiber

2011 ◽  
Vol 221 ◽  
pp. 48-53 ◽  
Author(s):  
Jin Yun Xu ◽  
Xin Jin
Keyword(s):  
Room Temperature ◽  
Oxidative Polymerization ◽  
Composite Fiber ◽  
Granular Structure ◽  
Polyester Fiber ◽  
Conducting Materials ◽  
Polyester Fibers ◽  
Heating Treatment ◽  
Polypyrrole Composite

Polyester fibers are used in a great many textile and industrial materials, their undesirable electrical advantage bring about disadvantages. Direct polymerization of pyrrole on polyester fibers may provide useful tools for producing new conducting materials. Polyester/polypyrrole composite fiber was prepared by in situ oxidative polymerization from liquid phase pyrrole at room temperature. The result showed that deposition of pyrrole is an effective way to impart conductivity to polyester fiber. The Tg of coated polyester fiber decreased and the surface of Ppy coated polyester fiber displayed an evident granular structure. In addition, the Ppy coatings have good stability under washing and heating treatment, which demonstrate that polypyrrole has good affinity to polyester fiber.

Characterization of CdTe films with in situ CdCl2 treatment grown by a simple vapor phase deposition technique

2009 ◽  
Vol 255 (15) ◽  
pp. 7012-7016 ◽  
Author(s):  
Araceli Rios Flores ◽  
R. Castro-Rodríguez ◽  
J.L. Peña ◽  
N. Romeo ◽  
A. Bosio
Keyword(s):  
Vapor Phase ◽  
Deposition Technique ◽  
Vapor Phase Deposition ◽  
Cdcl2 Treatment ◽  
Cdte Films

scholarly journals A Novel Trace-Level Ammonia Gas Sensing Based on Flexible PAni-CoFe2O4 Nanocomposite Film at Room Temperature

Polymers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 3077
Author(s):  
Rima D. Alharthy ◽  
Ahmed Saleh
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Oxidative Polymerization ◽  
Portable Devices ◽  
Trace Level ◽  
Humidity Effect ◽  
Sensor Performance ◽  
Wearable Electronic ◽  
Relative Humidity Effect

In this study, we developed a new chemi-resistive, flexible and selective ammonia (NH3) gas sensor. The sensor was prepared by depositing thin film of polyaniline-cobalt ferrite (PAni-CoFe2O4) nanocomposite on flexible polyethylene terephthalate (PET) through an in situ chemical oxidative polymerization method. The prepared PAni-CoFe2O4 nanocomposite and flexible PET-PAni-CoFe2O4 sensor were evaluated for their thermal stability, surface morphology and materials composition. The response to NH3 gas of the developed sensor was examined thoroughly in the range of 1–50 ppm at room temperature. The sensor with 50 wt% CoFe2O4 NPs content showed an optimum selectivity to NH3 molecules, with a 118.3% response towards 50 ppm in 24.3 s response time. Furthermore, the sensor showed good reproducibility, ultra-low detection limit (25 ppb) and excellent flexibility. In addition, the relative humidity effect on the sensor performance was investigated. Consequently, the flexible PET-PAni-CoFe2O4 sensor is a promising candidate for trace-level on-site sensing of NH3 in wearable electronic or portable devices.

Well-Defined Blackberry-Like Polypyrrole Microspheres via Chemical Oxidative Polymerization in the Presence of Functional Floating Bead as In Situ Dopant

2014 ◽  
Vol 904 ◽  
pp. 159-163 ◽  
Author(s):  
Jia Ping Lao ◽  
Chao Yang ◽  
Hao Dao Mo ◽  
Yu Ping Li ◽  
Li Min Zang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Electrical Conductivity ◽  
Sulfonic Acid ◽  
Room Temperature ◽  
Oxidative Polymerization ◽  
High Electrical Conductivity ◽  
Chemical Oxidative Polymerization ◽  
Inorganic Substrate ◽  
Thermal Stability Of

Functional floating bead (F-FB), prepared by anchoring the organic sulfonic acid on the surface of the blackberry-like structural FB, was used as both the inorganic substrate and the in situ dopant for the in situ chemical oxidative polymerization of pyrrole to obtain the plypyrrole/functional floating bead (PPy/F-FB) nanocomposite material. The composites possess high electrical conductivity at room temperature. Thermogravimetric analysis shows that the thermal stability of PPy/F-FB composites was enhanced and these can be attributed to the retardation effect of sulfonic acid-functionalized FB as barriers for the degradation of PPy. The morphology of PPy/FB composites showed the well-defined blackberry-like morphology.

Uniform Polypyrrole Layer-Coated Sulfur/Graphene Aerogel via the Vapor-Phase Deposition Technique as the Cathode Material for Li–S Batteries

2020 ◽  
Vol 12 (5) ◽  
pp. 5958-5967 ◽  
Author(s):  
Fang Li ◽  
Mohammad Rejaul Kaiser ◽  
Jianmin Ma ◽  
Yuyang Hou ◽  
Tengfei Zhou ◽  
...  
Keyword(s):  
Cathode Material ◽  
Vapor Phase ◽  
Deposition Technique ◽  
Graphene Aerogel ◽  
Vapor Phase Deposition

Non-covalent functionalization of CNTs with polycarbazole: a chemiresistive humidity sensor with tunable chemo-electric attributes at room temperature

2018 ◽  
Vol 42 (9) ◽  
pp. 6918-6931 ◽  
Author(s):  
Madhurima Das ◽  
Saptarshi Ghosh ◽  
Somenath Roy
Keyword(s):  
Room Temperature ◽  
Humidity Sensor ◽  
Oxidative Polymerization ◽  
Multiwall Carbon Nanotubes ◽  
Chemical Oxidative Polymerization ◽  
Humidity Sensors ◽  
Covalent Functionalization ◽  
Polymerization Method ◽  
Multiwall Carbon

This article describes the non-covalent functionalization of multiwall carbon nanotubes (MWCNTs) with polycarbazole (PCz) via an in situ chemical oxidative polymerization method and subsequent fabrication of resistive humidity sensors.

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