Electrospun Poly(methyl Methacrylate)/Polyaniline Blend Nanofibres with Enhanced Toxic Gas Sensing at Room Temperature

Abstract

Continuous progress in the methods of preparation of new materials for sensing of toxic gases has attracted considerable interest

MWCNTs/PMMA/PS composites functionalized PANI: electrical characterization and sensing performance for ammonia detection in a humid environment

“…For the response and recovery time, PANI/MWCNTs [20] and PANI/PMMA [79] in this table present better values than our composite. This is partly explained, in the case of PANI/MWCNTs [20], by the in-situ polymerization method which allows to perfectly cover the MWCNTs surfaces and ensuring rapid kinetics.…”

“…Such a surface state (with fibers embedded on the polymers) does not favour gain in surface area. However, our composite with response averaging 134% for 20 ppm, demonstrated better response for the detection of ammonia than that of sensors prepared using conventional mixing synthesis procedure [20,[34][35][78][79][80] where responses are 100% at 75 ppm for PANI/MWCNTs, 200% at 100 ppm for PANI/PS, and 600% at 100 ppm PANI/PEO.…”

“…This is partly explained, in the case of PANI/MWCNTs [20], by the in-situ polymerization method which allows to perfectly cover the MWCNTs surfaces and ensuring rapid kinetics. While for the PANI/PMMA [79], even if the synthesis procedure based on electrospinning and in situ polymerization allows to get stable structure, the operating temperature at 42° C can explain the rapid kinetics. It would be interesting to evaluate the sensing performance under a humid environment, unfortunately, its influence on the sensors has not been reported in these studies [20,[34][35][78][79][80].…”

“…While for the PANI/PMMA [79], even if the synthesis procedure based on electrospinning and in situ polymerization allows to get stable structure, the operating temperature at 42° C can explain the rapid kinetics. It would be interesting to evaluate the sensing performance under a humid environment, unfortunately, its influence on the sensors has not been reported in these studies [20,[34][35][78][79][80]. The performance of our sensors in the lower detection region, below the TLV for long and short term exposure, associated with the linearity of the calibration curve and the stability in a humid environment is clearly promising issues for future applications.…”

A control system on the syringe pump based on Arduino for electrospinning application

“…Besides for medical purposes, a syringe pump can also be used in the research field, such as nanotechnology in the form of electrospinning machines. [1][2][3][4] The early syringe pump invention involves a simple alarm clock mechanism using the clock coil rotation that turns the screw, which gradually pushes the injection plunger. This use of the syringe pump for administering drugs has been practised for years.…”