Browsing by Author "Reddy, N.R."

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Polyaniline/poly(styrene-co-acrylonitrile) blend nanofibers exhibit enhanced ammonia and nitrogen dioxide sensing characteristics
(Springer New York LLC barbara.b.bertram@gsk.com, 2016) Reddy, N.R.; Anandhan, S.
Polyaniline (PANI) nanofibers were synthesized by interfacial polymerization method and p-toluene sulfonic acid was used as a dopant to enhance the conductivity of the resultant emeraldine base of PANI. A blend of PANI and poly(styrene-co-acrylonitrile) (SAN) in the form of nanofibers was electrospun on interdigitated copper electrode and was used for sensing of ammonia and nitrogen dioxide. The sensor exhibited excellent sensitivity and responded quickly to those gases at ppm levels as low as 10. Transmission electron microscopy (TEM) and Fourier transform infrared (FTIR) spectroscopy results revealed that there is a good molecular level interaction between PANI and SAN, which is believed to be the major reason for the excellent gas sensitivity of these blend nanofibers. © 2016, Springer Science+Business Media New York.
Synthesis of Fatty Acid Methyl Esters (FAME) from Schizochytrium Marine Microalgae oil
(2018) Reddy, B.R.P.; Reddy, N.R.; Manne, B.
Fatty acid methyl esters (FAME) also called and accepted as biodiesel, obtained prominent importance in this new era as an alternate fuel for petro-diesel. Microalgae are identified as few of such feedstock for the production of biodiesel. Higher volumes of production per hectare area, fast growing ability and high oil contents are the major advantages of microalgae over the conventional oil yielding crops. Schizochytrium is one of marine microalgae and high lipid content of this microalga is ideal for production of biofuels. Also, Schizochytrium oil is found to have 0.1% free fatty acid content which is well within the recommended value for one-step alkaline transesterification. In this work, the synthesis of bio-diesel was carried out from Schizochytrium oil with the addition of potassium methoxide (a mixture of methanol and KOH). Aiming at the higher yield of FAME, essential amounts of methanol, catalyst, and reaction time were optimized. The yielding of FAME was confirmed by Gas Chromatography with Mass Spectroscopy (GC-MS) for each trial of experiment. A conversion efficiency of 99.99% was observed through GC-MS analysis for a 30% v/v methanol, 0.4% w/v KOH and 90 min reaction time at reaction temperature of 60�C. The results were complemented by proton nuclear magneto resonance (1H NMR) spectra and it is found that the synthesized fuel properties are well within the limits of ASTM standards. � 2018 Elsevier Ltd.
Synthesis of Fatty Acid Methyl Esters (FAME) from Schizochytrium Marine Microalgae oil
(Elsevier Ltd, 2018) Reddy, B.R.P.; Reddy, N.R.; Manne, B.
Fatty acid methyl esters (FAME) also called and accepted as biodiesel, obtained prominent importance in this new era as an alternate fuel for petro-diesel. Microalgae are identified as few of such feedstock for the production of biodiesel. Higher volumes of production per hectare area, fast growing ability and high oil contents are the major advantages of microalgae over the conventional oil yielding crops. Schizochytrium is one of marine microalgae and high lipid content of this microalga is ideal for production of biofuels. Also, Schizochytrium oil is found to have 0.1% free fatty acid content which is well within the recommended value for one-step alkaline transesterification. In this work, the synthesis of bio-diesel was carried out from Schizochytrium oil with the addition of potassium methoxide (a mixture of methanol and KOH). Aiming at the higher yield of FAME, essential amounts of methanol, catalyst, and reaction time were optimized. The yielding of FAME was confirmed by Gas Chromatography with Mass Spectroscopy (GC-MS) for each trial of experiment. A conversion efficiency of 99.99% was observed through GC-MS analysis for a 30% v/v methanol, 0.4% w/v KOH and 90 min reaction time at reaction temperature of 60Â°C. The results were complemented by proton nuclear magneto resonance (1H NMR) spectra and it is found that the synthesized fuel properties are well within the limits of ASTM standards. Â© 2018 Elsevier Ltd.