Hybrid gas sensor based on platinum nanoparticles/poly(methyl methacrylate)-coated single-walled carbon nanotubes for dichloromethane detection with a high response magnitude

2016 ◽  
Vol 65 ◽  
pp. 183-190 ◽  
Author(s):  
Worawut Muangrat ◽  
Visittapong Yordsri ◽  
Rungroj Maolanon ◽  
Sirapat Pratontep ◽  
Supanit Porntheeraphat ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Methyl Methacrylate ◽  
Gas Sensor ◽  
Platinum Nanoparticles ◽  
Single Walled Carbon Nanotubes ◽  
High Response ◽  
Response Magnitude ◽  
Poly Methyl Methacrylate ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Thermal properties of single walled carbon nanotubes composites of polyamide 6/poly(methyl methacrylate) blend system

2013 ◽  
Vol 115 (1) ◽  
pp. 345-354 ◽  
Author(s):  
Katakam Madhukar ◽  
Annadanam V. Sesha Sainath ◽  
Nampally Bikshamaiah ◽  
Yekkala Srinivas ◽  
Nandru M. Babu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Methyl Methacrylate ◽  
Single Walled Carbon Nanotubes ◽  
Polyamide 6 ◽  
Poly Methyl Methacrylate ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

scholarly journals The Effect of Volume Fraction of Single-Walled Carbon Nanotubes on Natural Frequencies of Polymer Composite Cone-Shaped Shell Made from Poly(Methyl Methacrylate)

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
A. H. Meysami ◽  
H. Razavi ◽  
I. Fakhari Golpayegani ◽  
V. Bagheri
Keyword(s):  
Carbon Nanotubes ◽  
Methyl Methacrylate ◽  
Polymer Composite ◽  
Natural Frequencies ◽  
Volume Fraction ◽  
Ritz Method ◽  
Single Walled Carbon Nanotubes ◽  
Poly Methyl Methacrylate ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

In this paper, the effect of volume fraction of single-walled carbon nanotubes on natural frequencies of polymer composite cone-shaped shells made from Poly(Methyl Methacrylate) (PMMA) is studied. In order to determine the characterization of materials reinforced with nanoparticles, the molecular dynamics and mixture rule has been used. The motion equations of composite shell based on the classical thin shells theory using Hamilton’s principle are obtained. Then, using the Ritz method, approximate analytical solution of the natural frequency is presented. Results indicate that the nanotubes have a noticeable effect on the natural frequencies.

Role of carboxylic acid functionalized single walled carbon nanotubes in polyamide 6/poly(methyl methacrylate) blend

2012 ◽  
Vol 53 (2) ◽  
pp. 397-402 ◽  
Author(s):  
K. Madhukar ◽  
A.V. Sesha Sainath ◽  
B. Sanjeeva Rao ◽  
D. Suresh Kumar ◽  
N. Bikshamaiah ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carboxylic Acid ◽  
Methyl Methacrylate ◽  
Single Walled Carbon Nanotubes ◽  
Polyamide 6 ◽  
Poly Methyl Methacrylate ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Effect of Operating Temperature on Characteristics of Single-Walled Carbon Nanotubes Gas Sensor

2005 ◽  
Vol 486-487 ◽  
pp. 485-488 ◽  
Author(s):  
Hong Quang Nguyen ◽  
Mai Van Trinh ◽  
Jeung Soo Huh
Keyword(s):  
Carbon Nanotubes ◽  
Gas Sensor ◽  
Gas Adsorption ◽  
Operating Temperature ◽  
High Sensitivity ◽  
Single Walled Carbon Nanotubes ◽  
Fast Response ◽  
Carrier Gas ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

The effect of operating temperature on characteristics of single-walled carbon nanotubes (SWNT) based gas sensor was investigated. SWNT-based sensor was fabricated from SWNT powder (Iljin Nanotech, Korea) by screen-printing method. SWNT powder (30 mg, AP grade) was dispersed into 0.78 gram a-terpineol (Aldrich) by ultrasonic vibration for 1 hour then stirred manually for 1 hour to increase adhesion. From this condensed solution, a thick film of SWNT was printed onto alumina substrates. The film then was sintered at 300oC for 2 hours to remove residual impurities. Upon exposure to some gases such as nitrogen, ammonia or nitric oxide, resistance of the sensor dramatically changes due to gas adsorption. In our experiments, SWNT-based sensor was employed to detect NH3 gas in N2 ambience. After saturated of N2, the sensor exposes to NH3 with various concentrations (from 5 ppm to 100 ppm, diluted by N2 as carrier gas). This sensor exhibits a fast response, high sensitivity but slow recovery at room temperature. By heating at high temperature and increasing the flow-rate of carrier gas, NH3 gas desorbs easily and recovery of the sensor improved. The heating also influenced the characteristics of sensors such as response and reproducibility. Other special changes in electric property of SWNT-based sensor caused by heating are also discussed.

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