About Me |
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Mr. Chittaranjan Routray, M.Sc ,Ph.D(Cont...) serving as Assistant Professor in the Department of Chemistry, School of Applied Sciences of Centurion University of Technology and Management, Odisha. He has more than 12 years of Experiences as an Academician as well as Researcher. His subject of expertise includes Polymer Chemistry, Nano Technology, Water Technology and Bio Chemistry.He has published 15 research Papers in various national and international journals and also attended several training programs, FDPs,Lecture workshops, Refresher Course conducted by different Univesities /Institutes.He also presented his research findings in various National and International conferences.He also served as Life Members of several professional societies such as Orissa Chemical Society, Society for Energy, Environmental and Material Science(SEEMS), Mining, Minerals ,Metals and Materials Society(4MSI) of India, The Society of Innovative Educationalist & Scientific Research Professionals, Chennai, Institute of Scholars,Bangalore. He is also serving as members of editorial board of several Journals and has conducted several national seminars/conferences, student and faculty development workshops. He has also conferred with various awards such as The Educationalist-Professional Award from society Of Innovative Educationalist & Scientific Research Professional, Chennai and Academic Excellence award from Institute of Scholars, Bangalore.Now he is actively engaged in teaching as well as cutting edge research in fields of Nano Composites, heavy metal ions removal from waste water and hydrophobic textiles and also guiding post graduate students in research. |
Synthesis and Characterization of vinyl grafted co polymers of cellulose and cellulose acetate in homogeneous media.
Sl. No. | Title | Issuer |
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1 | Innovative Research and Dedicated Teaching Professional Award | society of Innovative Educationalist & Scientific Research Professional, Chennai |
2 | Academic Excellence award | Institute of Scholars, Bangalore |
The structural modification of organic molecules has considerable biological relevance and co-ordination of these compounds to metal ions significantly alters their biological activity. With this views , some Schiff base ligands are synthesized by the condensation of unsub/sub. aminothiazole with salicyl/napthyl aldehyde and their metal complexes with trasition metals. Cu(II),Ni(II),Zn(II) and Co(II) are prepared by adopting earlier procedure1. The complexes are characterized by elemental analysis, spectral study as well as by magnetic moment measurement. The structural elucidation of the molecules is based on electronic, IR, NMR as well as Magnetic Susceptibility measurement. The data are indicative of the fact that metal is bonded to ligand through phenolic oxygen and imino nitrogen atom. The anti-microbial assay of the prepared samples are carried out by adopting modern protocol and found to be good antibacterial and antifungal agents2.
Chitosan/PCL-G-NH2PAMAM based dendrimer complex has been developed andthe extended release of Cyclophosphamide (CYC) was investigated by changing formulation variables. The dendrimer hydrogels
so formed were characterized by FTIR, Thermogrametry Analysis (TGA) and Scanning Electron Microscopy (SEM).The equilibrium swelling indicated the distinct sensitiveness of the matrix to pH value
and temperature.Within 10 h the cumulative release amount of CYC-loaded in t he matrix was about 84%and 86% at pH 7.4 and 3.4 respectively. The Controlled Drug delivery of CS/PCL-G-NH2PAMAM was studied using broad spectrum anticancer drug Cycloposphamide. The most conspicuous part of the present study lies in the population of various kinetic models for drug delivery systems. A simple kinetic method has been used to monitor drug delivery kinetics. The various kinetic parameters like k and n value have been computed and the mechanism of invitro drug release of the model drugs have been postulated. The complex developed so far are useful as carriers in drug delivery systems. These complexes can be used as antibacterial agents in pharmaceutical and other medical applications.
Ecofriendly nanocomposites have been fabricated from cellulose acetate (CA) powder with incorporation of C25A as a reinforcing material by solvent evaporation method. The consequence of Cloisite wt% on composites was evaluated by varying the composition. The morphologies of these nanocomposites were evaluated through X-ray diffraction (XRD), Scanning electron microscopy (SEM) studies. The mechanical properties of nanocomposites like hardness, tensile strength, modulus of elasticity and thermal stability showed an increasing trend with an increase of clay content from 2.5 to 10 wt %. Moreover the water retention capacity of the composites decreased considerably with increase in clay content.
D-Limonene essential oil was extracted from orange peels by soxhlation method using different solvents like ethanol,methanol, n-hexane, 1 propanol and distilled water in order to compare the yield percentage. The percentage of yield was in the order of ethanol > 1- propanol>hexane > distilled water>methanol. The study on variation of percentage yield with
extraction time and weight of the peels showed a linear trend. The extracted oils were characterized by UV-Visible, FT-IR and 1H NMR analysis.
This research gives a brief discussion on work done in the formation of
bioethanol from rice straws using physical and chemical methods. The physical
methods include washing, air air drying, cutting, autoclave. The rice straws are
cut into fine pieces and washed thoroughly under tap water and then air dried.
The chemical methods include pre-treatment and fermentation. The pretreatment
is basically done in order to extract the reducing sugarfrom the lignin
components of the rice straws by cellulase enzyme obtained from fungus grown
over breads. The pre-treatment is done for about 48 hoursunder room
temperature. The fermentation is done with the help of yeast (Saccharomyces
Cerevisiae) in order to extract ethanol from the pre-treated solution.The
extracted ethanol was characterized by FT-IR and 1H NMR analysis. The bioconversion
offers a cheap and safe method of disposing agricultural waste and
conversion of lignocellulose into ethanol.
Synthesis of graphene oxide and reduced graphene oxide from low cost coal and ecofriendly reduction process has been synthesized from powdered coal by modified hammer’s method and reduced by
treating with black tea extract at 90 0C for 2 hrs. The graphene oxide(GO) and reduced graphene
oxide(RGO) so obtained were characterized by UV, FT-IR, XRD, Raman and SEM.
Graphite electrodes so obtained from waste zinc-carbon batteries were washed several times with water to remove impurities and made into powder and then treated with mixture of HCl and HNO3(3:1)
followed by drying at 600C to get pure graphite powder that was used as a starting material to synthesize graphene oxide(GO) by improved Hammer’s method.The graphene oxide(GO) again treated with Azadirachta indica leaf extract and converted to reduced graphene oxide(RGO).The rGO so obtained was characterized by UV-VIS Spectrophotometer, Fourier Transform Infrared Spectrophotometer, X-ray Diffractometer and Scanning Electron Microscope. The characterization data gave clear evidence on
effective formation of reduced graphene oxide.
Clove (Syzygium aromaticum) is one among the mostly used spices in India that generally used as food preservative and lots of medicinal purposes. This spice should deserve a special attention due to its
antioxidant and antimicrobial activity as compared to other spices used in India. The objective of the study is to extract clove oil from clove powder by using ethanol and water as solvent and to see the efficient solvent that gives maximum effective result. The oil was extracted from 50gm of clove with 250ml. of above solvents at their boiling temperature in soxhlation.The amount of solvent present along with it was separated by rotary evaporator. The oil so obtained was characterized by UV-Visible, FT-IR analysis.Finally it was concluded that the clove oil produced by using ethanol as solvent is most effective and we use the clove powdered residue (waste powder produced after preparing clove oil) on soil to see their effect. As we can’t use those clove residue efficiently at our daily life so we may throw it out. So in this study, those clove residue waste powder was added to the garden soil and both initial and final physicochemical parameters and elemental contents of soil were examined. So clove waste can be recommended as the pesticide and organic fertilizer which can boost the nutrient level of soil and increase the soil fertility.
The depletion of petroleum fuels is a major concern now a day. The growth in automobile sector and population are the prime causes for it. Moreover the emission from vehicles that uses petroleum fuels such as petrol, diesel and kerosene possess a threat to the environment and mankind. The major gases coming out from the vehicle emission such as Carbon Monoxide (CO), Carbon Dioxide (CO2), Oxides of Nitrogen (NOx), Hydro Carbon (HC), Particulate Matter (PM) are polluting atmosphere to great extent.
Many researchers have proposed several ways of reducing pollution by using alternate energy sources. Use of biodiesel as a liquid alternate fuel is one of the biggest achievement so far. As the name suggests,it can be produced from biofuels and has similar properties with conventional diesel fuel. The wide availability of plant such as karanja, Mahua, Sunflower, Kusuma, jatropha, Castor is favourable for biodiesel production. Researchers are going in favour of different non edible oil sources because they are non-consumable for human being. Characteristics of these oils need to be carefully studied before proceeding for biodiesel production. However the use of biodiesel as fuel for vehicles decreases the performance slightly due to less calorific value as compared to conventional diesel and petrol. But on the other hand, there is a significant reduction in pollution level as reported by different researchers. In this work, a mixed biodiesel blend of Mahua and castor has been prepared and used as an alternate fuel to run a diesel engine. The results obtained give comparable engine performances while there is a reductionin emission gases as compared to castor biodiesel of same blend.
Nanofluid-a term coined by Choi (1995) is obtained by the colloidal suspension of nanoparticles (NPs) like metal oxides, metals, fullerene, graphene, carbon nanotube, etc. in a base fluid such as water, plant extract, polymer solution, etc. Polymer nanocomposites(PNCs) are developed by homogeneous dispersion of NPs in a solution of polymer or copolymer. Here the focus is on the synthesis of cuprous oxide (Cu2O) nanoparticles at room temperature using aqueous leaves extract of Calotropis gigantea. L. via chemical reduction route and development of poly (vinyl alcohol) PVA-cuprous oxide (Cu2O) nanofluids (NFs) and nanocomposite films. The NFs and nanocomposite films so fabricated were subjected to characterization by spectrophotometers, diffractometer, High resolution microscope, and disk diffusion antibacterial test. UV-Visible spectrum shows a characteristic broad absorption band observed near 470 nm suggesting presence of cuprous oxide NPs in the NFs. The shift in the vibrational band of –OH group of PVA in the presence of metal oxide NPs reveals chemical interaction between –OH group of PVA and NPs. XRD study suggests the occurrence of Cu2O NPs in the PNC film and NPs are crystalline in nature. SEM image shows the presence of agglomerated NPs in a polymer matrix. From the antibacterial study, it is found that NPs in aqueous plant extract without PVA exhibits superior antibacterial activity in comparison to NPs in presence of PVA polymer.
Polyacrylonitrile samples are prepared by treating fenton reagent with acrylonitrile and irradiated atroom temperature with Co60 gamma-rays with different doses of 1M rad to 20M rad and annealed upto 120hrs
at 800C.It is found that after irradiation the molecular mass decreased initially at lower doses but
increased at 20M rad . Gel fraction determination indicated that gamma irradiation led to the
predominant crosslinking of PAN fibers,with G values(the number of event per 100eV energy
absorbed)of G(X) = 0.28 and G(S) = 0.16 for chain crosslinking and scission but the anneling of radiation
damage become effective after 120 hrs due to increase in gel fraction and internal chemical reactions.This
attributes to the fact that the residual radicals as well as broken fragments crosslinks with each other after
irradiation thereby increase in the intrinsic viscosity and molecular mass of PAN. Radiation crosslinking
has potential application in the production of PAN-based carbon fibers.
The most challenging aspects of water technology now-a-days is to remove toxic and heavy metals ions like Cr(IV) from water coming out from industrial and agricultural sectors that contaminates with
ground as well as other sources of drinking water and creates severe health issues in terrestrial animals ,
aquatic creatures and human civilization. In this study the grafting of 2-hydroxyethyl methacrylate
(HEMA) and acrylic acid (AA) onto Cellulose (CE) via redox initiator system of ammonium persulfate
(APS) and complex catalyst CuSO4/glycine(1:1) in the presence of foaming agent sorbitol was designed.
The CE-g-P(HEMA-co-AA)/snail shell a novel thin film was prepared from the combination of CE-g-P
(HEMA-co-AA) polymers with the modified snail shell,(nano-CaO) as a nano filler,then the so prepared
CE-g-P(HEMA-co-AA)/nano-CaO nano gel thin film is used for biosorption of heavy metal ions at
varying pH in waste water. Characterization of TNGs was done by FT-IR,XRD, TGA, and FESEM. TNGs
are potentially suitable for use as pressure-sensitive adhesives (PSAs) and super absorbents exhibiting
good biodegradability for cost effective removal of toxic elements from waste water.
Modification of cellulose have drawn the attention of researchers in present days .In the present review we have discussed the different solvent systems for cellulose and subsequently several methods of
grafting by monomers onto cellulose surface by chemical means in homogeneous media. Various
properties of cellulose e.g. thermosensitivity, pseudo plastic behavior, appearance , softness , ironing, hydrophilicity, hydrophobicity, graft yield and grafting efficiency after grafting and their sustainable
applications are also discussed.
By taking advantage of cellulose, graphene oxide (GO), and the process for cross linking using
glutaraldehyde, we propose a simple and novel method to prepare GO/cellulose hydrogel with good
potential to adsorb metal ions. GO nano sheets containing carboxyl and hydroxyl groups were
introduced into the surface of the cellulose hydrogel with retention of the gel structure and its
nanoporous property. Due to the introduction of GO, the GO/cellulose composite hydrogels exhibited
good compressive strength. Adsorption capacity of Cu2+ significantly increases with an increase in the
GO/cellulose ratio and GO/cellulose hydrogel showed high adsorption rates. The calculated adsorption
capacities at equilibrium (qcale) for GO/cellulose hydrogel (GO:cellulose = 20:100 in weight) was up to
94.34 mg.g-1, which was much higher than that of the pristine cellulose hydrogels. GO/cellulose hydrogel
exhibited high efficient regeneration and metal ion recovery, and high adsorption capacity for Cu2+ ion
for water sustainability.
By taking advantage of cellulose, graphene oxide (GO), and the process for cross linking using
glutaraldehyde, we propose a simple and novel method to prepare GO/cellulose hydrogel with good
potential to adsorb metal ions. GO nano sheets containing carboxyl and hydroxyl groups were
introduced into the surface of the cellulose hydrogel with retention of the gel structure and its
nanoporous property. Due to the introduction of GO, the GO/cellulose composite hydrogels exhibited
good compressive strength. Adsorption capacity of Cu2+ significantly increases with an increase in the
GO/cellulose ratio and GO/cellulose hydrogel showed high adsorption rates. The calculated adsorption
capacities at equilibrium (qcale) for GO/cellulose hydrogel (GO:cellulose = 20:100 in weight) was up to
94.34 mg.g-1, which was much higher than that of the pristine cellulose hydrogels. GO/cellulose hydrogel
exhibited high efficient regeneration and metal ion recovery, and high adsorption capacity for Cu2+ ion
for water sustainability.