Pub Date : 2018-01-01DOI: 10.21767/0972-768X.1000280
A. Lembhale
Green chemistry brings an attention on a research work emerging from scientific innovations regarding toxic waste acquaintance and it make the use of principles that reduces the use or generation of hazardous materials in an intermediate as well as final steps of Organic synthesis or Chemical progression. Researchers can significantly diminish the hazard to human health as well as environment by following all the valuable philosophy of green chemistry. The most simple way in application of green chemistry in pharmaceuticals is to use efficient, reproducible, eco-friendly, non-hazardous green solvents and green catalysts in synthesis of Organic Moiety, drug intermediates and in researches concerning synthetic chemistry. Organic catalyst brings an exceptional advantage considering the principles of “green chemistry” in Environment as well as economic point of view. Solvents states major serving of the environmental concert of a process and also impact safety and health issues. Water has been found to be very efficient green Solvent and thus can replace many poisonous and harmful solvents. Cycloaddition reactions are fundamental and substantial part of organic chemistry in research. Research work on the aza Diels alder cycloaddition reactions in aqueous systems would be green pathway for organic processes and will definitely protect health as well as environment from toxic materials.
{"title":"Organo-catalytic [4+2] Aza Diels Alder Cycloaddition Reaction in an Environmentally Benign Solvent System","authors":"A. Lembhale","doi":"10.21767/0972-768X.1000280","DOIUrl":"https://doi.org/10.21767/0972-768X.1000280","url":null,"abstract":"Green chemistry brings an attention on a research work emerging from scientific innovations regarding toxic waste acquaintance and it make the use of principles that reduces the use or generation of hazardous materials in an intermediate as well as final steps of Organic synthesis or Chemical progression. Researchers can significantly diminish the hazard to human health as well as environment by following all the valuable philosophy of green chemistry. The most simple way in application of green chemistry in pharmaceuticals is to use efficient, reproducible, eco-friendly, non-hazardous green solvents and green catalysts in synthesis of Organic Moiety, drug intermediates and in researches concerning synthetic chemistry. Organic catalyst brings an exceptional advantage considering the principles of “green chemistry” in Environment as well as economic point of view. Solvents states major serving of the environmental concert of a process and also impact safety and health issues. Water has been found to be very efficient green Solvent and thus can replace many poisonous and harmful solvents. Cycloaddition reactions are fundamental and substantial part of organic chemistry in research. Research work on the aza Diels alder cycloaddition reactions in aqueous systems would be green pathway for organic processes and will definitely protect health as well as environment from toxic materials.","PeriodicalId":13865,"journal":{"name":"international journal of chemical sciences","volume":"44 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88495192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.21767/0972-768X.1000292
H. Zea
Electron microscopes are equipment that use an accelerated electron beams as probes to generated images with magnifications and resolution not possible to obtain with optical microscopes (due to fact that electron wavelength can be 100,000 times shorter than visible light photons). Electron microscopes operating in the conventional high vacuum mode require conductive imaging specimens; therefore, non-conductive materials need the deposition of a conductive layer (Au-Pd alloys, carbon and osmium, among others). Low voltage mode of modern microscopes makes possible to observe non-conductive uncoated specimens. Transmission electron microscopes require thin samples (below 100 nm), placed onto appropriate sample holders. Electron microscopes are state of the art equipment that requires high operation and maintenance standards, therefore having a clear understanding of the operation fundamentals, equipment capabilities, suitable sample preparations and appropriate results interpretation is of critical importance to use the technique in the most suitable fashion.
{"title":"Fundamentals and Applications of Scanning and Transmission Electron Microscopes","authors":"H. Zea","doi":"10.21767/0972-768X.1000292","DOIUrl":"https://doi.org/10.21767/0972-768X.1000292","url":null,"abstract":"Electron microscopes are equipment that use an accelerated electron beams as probes to generated images with magnifications and resolution not possible to obtain with optical microscopes (due to fact that electron wavelength can be 100,000 times shorter than visible light photons). Electron microscopes operating in the conventional high vacuum mode require conductive imaging specimens; therefore, non-conductive materials need the deposition of a conductive layer (Au-Pd alloys, carbon and osmium, among others). Low voltage mode of modern microscopes makes possible to observe non-conductive uncoated specimens. Transmission electron microscopes require thin samples (below 100 nm), placed onto appropriate sample holders. Electron microscopes are state of the art equipment that requires high operation and maintenance standards, therefore having a clear understanding of the operation fundamentals, equipment capabilities, suitable sample preparations and appropriate results interpretation is of critical importance to use the technique in the most suitable fashion.","PeriodicalId":13865,"journal":{"name":"international journal of chemical sciences","volume":"67 1","pages":"1-12"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82549764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.21767/0972-768X.1000275
E. an, M. F., Fatima G
Butea monosperma (BM) (lim.) Kuntz also known as flame of forest is being used in traditional medicines to treat so many disease conditions. Preliminary phytochemical screening of this plant revealed the following-Alkaloids, cynogenic glycosides, phenolic compounds, flavonoids, terpenoids, tannins and saponins. It contains butrin, isobutrin, butin, palasitrin, and butein. The present study aimed at investigating the metal composition of five major parts of BM using a highly sensitive Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES). Eighteen essential minerals elements viz Ag, Ba, Be, Bi, B, Ca, Co, Cr, Cu, Fe, Mg, Mn, Mo, Ni, Se, Sr, V and Zn) and three non-essential elements (As, Cd, Pb) were determined for the first time in B. monosperma. Wet digestion method using a mixture of 2 ml of concentrated HNO3:HClO4 (4:1 v/v), 1 ml H2O2 and 1ml miliQ water was used for digestion of the samples using microwave in a Microwave Digestion System (MDS) and analyzed by ICP-OES. The concentration of toxic elements viz As and Pb detected were found below the FAO/WHO maximum permissible limit; hence they are safe for human consumption. This study provides information on the nutritive value of B. monosperma which indicates that it is good for health and also serves as a good source of essential nutrients and has low levels of toxic elements.
{"title":"Essential and Non-Essential Elemental Composition of Five Different Major Parts of Butea monosperma (Palash) by Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES)","authors":"E. an, M. F., Fatima G","doi":"10.21767/0972-768X.1000275","DOIUrl":"https://doi.org/10.21767/0972-768X.1000275","url":null,"abstract":"Butea monosperma (BM) (lim.) Kuntz also known as flame of forest is being used in traditional medicines to treat so many disease conditions. Preliminary phytochemical screening of this plant revealed the following-Alkaloids, cynogenic glycosides, phenolic compounds, flavonoids, terpenoids, tannins and saponins. It contains butrin, isobutrin, butin, palasitrin, and butein. The present study aimed at investigating the metal composition of five major parts of BM using a highly sensitive Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES). Eighteen essential minerals elements viz Ag, Ba, Be, Bi, B, Ca, Co, Cr, Cu, Fe, Mg, Mn, Mo, Ni, Se, Sr, V and Zn) and three non-essential elements (As, Cd, Pb) were determined for the first time in B. monosperma. Wet digestion method using a mixture of 2 ml of concentrated HNO3:HClO4 (4:1 v/v), 1 ml H2O2 and 1ml miliQ water was used for digestion of the samples using microwave in a Microwave Digestion System (MDS) and analyzed by ICP-OES. The concentration of toxic elements viz As and Pb detected were found below the FAO/WHO maximum permissible limit; hence they are safe for human consumption. This study provides information on the nutritive value of B. monosperma which indicates that it is good for health and also serves as a good source of essential nutrients and has low levels of toxic elements.","PeriodicalId":13865,"journal":{"name":"international journal of chemical sciences","volume":"37 1","pages":"1-15"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77657469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.21767/0972-768X.1000254
Rizwan S. Shaikh, P. Mahanwar
The objective of this research work was to develop a method for reclaiming the used engine oil which is time efficient, environment friendly and economical. The used oil was reclaimed using polymeric flocculants. Different cationic copolymers of polyamines like poly (adipic acid-co-epoxy propyldiethylene triamine) solution (polyamine 1), poly (dimethylamine-co-epichlorohydrin-co-ethylenediamine) solution (polyamine 2) and poly (dimethylamine-co-epichlorohydrin) solution (Polyamine 3) were used for reclaiming. The yield of oil reclaimed by using polymeric flocculants using polyamine 2 was 84% and the solvent recovered from reclaimed oil was 74%. It was observed that polymeric flocculants successfully removed the contaminants from the used engine oil. The physical and chemical properties like flash point, aniline point, color, total acid number (TAN), total base number (TBN), specific gravity and API gravity, refractive index (RI), kinematic viscosity and viscosity index of the reclaimed oil were characterized and compared with used engine oil and standard engine oil. The results indicated that all the impurities were removed from the used engine oil successfully using polymeric flocculants.
{"title":"Reclamation of Used Engine Oil Using Polymeric Flocculants","authors":"Rizwan S. Shaikh, P. Mahanwar","doi":"10.21767/0972-768X.1000254","DOIUrl":"https://doi.org/10.21767/0972-768X.1000254","url":null,"abstract":"The objective of this research work was to develop a method for reclaiming the used engine oil which is time efficient, environment friendly and economical. The used oil was reclaimed using polymeric flocculants. Different cationic copolymers of polyamines like poly (adipic acid-co-epoxy propyldiethylene triamine) solution (polyamine 1), poly (dimethylamine-co-epichlorohydrin-co-ethylenediamine) solution (polyamine 2) and poly (dimethylamine-co-epichlorohydrin) solution (Polyamine 3) were used for reclaiming. The yield of oil reclaimed by using polymeric flocculants using polyamine 2 was 84% and the solvent recovered from reclaimed oil was 74%. It was observed that polymeric flocculants successfully removed the contaminants from the used engine oil. The physical and chemical properties like flash point, aniline point, color, total acid number (TAN), total base number (TBN), specific gravity and API gravity, refractive index (RI), kinematic viscosity and viscosity index of the reclaimed oil were characterized and compared with used engine oil and standard engine oil. The results indicated that all the impurities were removed from the used engine oil successfully using polymeric flocculants.","PeriodicalId":13865,"journal":{"name":"international journal of chemical sciences","volume":"124 1","pages":"1-14"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86287043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.21767/0972-768x.1000271
N. Goudarzian, Roya Saleh, S. Mousavi, S. Hashemi
Polyethylene amine functionalized with boron hydride Nano-Cerium was used as reactive polymer revival. The reagent was found to be efficient and selective in the reduction of aldehyde sand ketones to the corresponding alcohols in high yields at room temperature. The re-agent exhibited good chemo selectivity in the reduction of aldehyde sand ketones. In the competitive reduction of a 1:1 molar mixture of benzaldehyde. Benzaldehyde was selectively reduced to benzyl alcohol. The spent resin could be recycled by treating with sodium borohydride. The recycled resin was used several times without much loss in chemical reactivity and mechanical stability. The Poly Ethyleneamine-Cerium Methoxy Bohrohydride was found to be more efficient than was the Merrifield resin in the preparation of the reagent as well as in the reduction reactions.
{"title":"Recovery of Poly Ethylene Amine Nano Cerium Methoxy Bohrohydride Reagent: A New Class of Polymeric Reducing Agent","authors":"N. Goudarzian, Roya Saleh, S. Mousavi, S. Hashemi","doi":"10.21767/0972-768x.1000271","DOIUrl":"https://doi.org/10.21767/0972-768x.1000271","url":null,"abstract":"Polyethylene amine functionalized with boron hydride Nano-Cerium was used as reactive polymer revival. The reagent was found to be efficient and selective in the reduction of aldehyde sand ketones to the corresponding alcohols in high yields at room temperature. The re-agent exhibited good chemo selectivity in the reduction of aldehyde sand ketones. In the competitive reduction of a 1:1 molar mixture of benzaldehyde. Benzaldehyde was selectively reduced to benzyl alcohol. The spent resin could be recycled by treating with sodium borohydride. The recycled resin was used several times without much loss in chemical reactivity and mechanical stability. The Poly Ethyleneamine-Cerium Methoxy Bohrohydride was found to be more efficient than was the Merrifield resin in the preparation of the reagent as well as in the reduction reactions.","PeriodicalId":13865,"journal":{"name":"international journal of chemical sciences","volume":"51 1","pages":"1-23"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84790931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.21767/0972-768x.1000257
Balal Oroji, E. Solgi, A. Sadighzadeh
Energy consumption, driven by the burning of fossil fuels and motor vehicle emissions are regarded as two main primary causes of air pollution. However, culture is a less-obvious factor affecting air pollution, which is often overlooked by researchers. The Chahar-Shanbe Suri culture in Iran is a significant and direct factor leading to air pollution in Iran. Unfortunately, few people recognize the role of culture in dealing with environmental problems. Culture plays an important role in many environmental problems. This study investigates why and how “Chahar-Shanbe Suri” culture leads to increase air pollution in Iran. Following the fireworks of Chahar-Shanbe Suri in Tehran, Tehran's air quality index increase by a high slope, and the clean condition with the 49 index at 20 pm was unhealthy for all segments of society with a 177 index at 23 o'clock. Of course, according to the data measured in Tehran's air quality assessment stations, the air quality index in the areas of the city has risen above or near 200, which indicates a very unhealthy condition. The people, governments, and industry should work together to navigate positive initiatives. Public education and media navigation are necessary for dealing with the cultural aspects of environmental pollution.
{"title":"Effect of Chahar-Shanbe Suri Celebration on Air Quality in Iran: A Case Study of Tehran (Megacity)","authors":"Balal Oroji, E. Solgi, A. Sadighzadeh","doi":"10.21767/0972-768x.1000257","DOIUrl":"https://doi.org/10.21767/0972-768x.1000257","url":null,"abstract":"Energy consumption, driven by the burning of fossil fuels and motor vehicle emissions are regarded as two main primary causes of air pollution. However, culture is a less-obvious factor affecting air pollution, which is often overlooked by researchers. The Chahar-Shanbe Suri culture in Iran is a significant and direct factor leading to air pollution in Iran. Unfortunately, few people recognize the role of culture in dealing with environmental problems. Culture plays an important role in many environmental problems. This study investigates why and how “Chahar-Shanbe Suri” culture leads to increase air pollution in Iran. Following the fireworks of Chahar-Shanbe Suri in Tehran, Tehran's air quality index increase by a high slope, and the clean condition with the 49 index at 20 pm was unhealthy for all segments of society with a 177 index at 23 o'clock. Of course, according to the data measured in Tehran's air quality assessment stations, the air quality index in the areas of the city has risen above or near 200, which indicates a very unhealthy condition. The people, governments, and industry should work together to navigate positive initiatives. Public education and media navigation are necessary for dealing with the cultural aspects of environmental pollution.","PeriodicalId":13865,"journal":{"name":"international journal of chemical sciences","volume":"48 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73807791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.21767/0972-768x.1000285
Abd-El-Fattah Me, Dessouki Aa, Emam Am, Abdel-Rahman Hg, Kamal Mm
Non-alcoholic fatty liver (NAFL) participates in the progress of cardiovascular risks. Lipotropic factors such as choline can prevent excess fat accumulation in the liver. Garlic and onion contain large amount of sulfur compounds. The present study was conducted to investigate the protective effects of choline, onion and garlic oils and combination of both oils in rats fed high fat diet and their impacts on liver and aortic tissues. Forty-two, male albino rats were divided randomly into six groups; 7 rats each and kept for 2 months. Control group; received control diet, F group; fat diet, F-choline group; fat diet with choline (3 gm/100 g diet), F-OO, F-GO and F-mix groups; fat diet and supplemented with onion oil (100 mg/Kg B.W), garlic oil (100 mg/Kg B.W) and combination of both oils, respectively. F-group significantly increased body weight, liver weight, serum lipid profile, hepatic and cardiac biomarkers, leptin hormone and tissue MDA level, while, significantly decreased serum HDL-C, total protein, albumin, TNO, adiponectin and tissue antioxidants compared to control group. Otherwise, the treated fat groups revealed significant improvement in all tested parameters compared to untreated fat group. In conclusion, onion and garlic oils combination induced marked hypolipidemic, antioxidant and anti-atherogenic impacts on hyperlipidemic rats.
{"title":"Modulation of Induced NAFLD Drawbacks on Hepatic and Cardiac Tissues of Rats through Choline and Some Nutraceutical Oils Supplementations","authors":"Abd-El-Fattah Me, Dessouki Aa, Emam Am, Abdel-Rahman Hg, Kamal Mm","doi":"10.21767/0972-768x.1000285","DOIUrl":"https://doi.org/10.21767/0972-768x.1000285","url":null,"abstract":"Non-alcoholic fatty liver (NAFL) participates in the progress of cardiovascular risks. Lipotropic factors such as choline can prevent excess fat accumulation in the liver. Garlic and onion contain large amount of sulfur compounds. The present study was conducted to investigate the protective effects of choline, onion and garlic oils and combination of both oils in rats fed high fat diet and their impacts on liver and aortic tissues. Forty-two, male albino rats were divided randomly into six groups; 7 rats each and kept for 2 months. Control group; received control diet, F group; fat diet, F-choline group; fat diet with choline (3 gm/100 g diet), F-OO, F-GO and F-mix groups; fat diet and supplemented with onion oil (100 mg/Kg B.W), garlic oil (100 mg/Kg B.W) and combination of both oils, respectively. F-group significantly increased body weight, liver weight, serum lipid profile, hepatic and cardiac biomarkers, leptin hormone and tissue MDA level, while, significantly decreased serum HDL-C, total protein, albumin, TNO, adiponectin and tissue antioxidants compared to control group. Otherwise, the treated fat groups revealed significant improvement in all tested parameters compared to untreated fat group. In conclusion, onion and garlic oils combination induced marked hypolipidemic, antioxidant and anti-atherogenic impacts on hyperlipidemic rats.","PeriodicalId":13865,"journal":{"name":"international journal of chemical sciences","volume":"11 1","pages":"1-16"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73216203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.21767/0972-768X.1000296
A. Kaviarasi, Kumari Mvl, A. Anandhavadivel, P. Ar
The Ethylene vinyl acetate, a copolymer of polyethylene (EVA) has been used for the preparation of thin films for the investigation. The films are prepared by room temperature using solvent casting method through varying the percentage of vinyl acetate content in EVA as 18%, 58% and 88%. Chloroform is used as a solvent for ethylene vinyl acetate, high-speed stirring resulting the homogenous dispersion of the molecules. The resultant thin films of EVA with 18%, 58% and 88% of VA are characterized under different characterization techniques. The Fourier Transform Infrared Spectroscopy (FTIR) confirms the functional groups present in the EVA films of varying concentrations of VA. Thermo Gravimetric Analysis (TGA) is carried out to confirm the Thermal Stability of the films with increase in VA content. The improvement in mechanical properties like Tensile Strength, Flexural Strength and Toughness with increase in vinyl acetate content is confirmed through mechanical studies. The dielectric properties are studied for all the three concentrations of vinyl acetate in EVA, which shows constant result on the value of dielectric constant at higher the vinyl acetate in EVA as 88%.
{"title":"Thermal Mechanical and Dielectric Studies on Thin Films of Ethylene Vinyl Acetate Copolymer with Varying Concentration of Vinyl Acetate","authors":"A. Kaviarasi, Kumari Mvl, A. Anandhavadivel, P. Ar","doi":"10.21767/0972-768X.1000296","DOIUrl":"https://doi.org/10.21767/0972-768X.1000296","url":null,"abstract":"The Ethylene vinyl acetate, a copolymer of polyethylene (EVA) has been used for the preparation of thin films for the investigation. The films are prepared by room temperature using solvent casting method through varying the percentage of vinyl acetate content in EVA as 18%, 58% and 88%. Chloroform is used as a solvent for ethylene vinyl acetate, high-speed stirring resulting the homogenous dispersion of the molecules. The resultant thin films of EVA with 18%, 58% and 88% of VA are characterized under different characterization techniques. The Fourier Transform Infrared Spectroscopy (FTIR) confirms the functional groups present in the EVA films of varying concentrations of VA. Thermo Gravimetric Analysis (TGA) is carried out to confirm the Thermal Stability of the films with increase in VA content. The improvement in mechanical properties like Tensile Strength, Flexural Strength and Toughness with increase in vinyl acetate content is confirmed through mechanical studies. The dielectric properties are studied for all the three concentrations of vinyl acetate in EVA, which shows constant result on the value of dielectric constant at higher the vinyl acetate in EVA as 88%.","PeriodicalId":13865,"journal":{"name":"international journal of chemical sciences","volume":"116 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87844142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.21767/0972-768x.1000268
P. KamatchiSelvaraj, S. Sivakumar, S. Selvaraj
Oxidative polymerization of aniline along with NiO nanoparticles using APS as oxidant and DBSA as dopant as well as surfactant at 0oC yielded water soluble NiO-polyaniline composite. Spectral analysis like FTIR, XRD and SEM confirms the formation of the composite. Potentiality against corrosion is tested by gravimetric method, open circuit potential measurement, potentiodynamic polarization and electrochemical impedance spectroscopy. Effectiveness to give protection up to eight hours with slight changes in efficiency is observed in weight loss method. The results expose that the materials synthesized could give safe working environment in industrial maintenance work.
{"title":"Nio-PANI Composite as Potential Inhibitor for Mild Steel in Acidic Corrosion Environment","authors":"P. KamatchiSelvaraj, S. Sivakumar, S. Selvaraj","doi":"10.21767/0972-768x.1000268","DOIUrl":"https://doi.org/10.21767/0972-768x.1000268","url":null,"abstract":"Oxidative polymerization of aniline along with NiO nanoparticles using APS as oxidant and DBSA as dopant as well as surfactant at 0oC yielded water soluble NiO-polyaniline composite. Spectral analysis like FTIR, XRD and SEM confirms the formation of the composite. Potentiality against corrosion is tested by gravimetric method, open circuit potential measurement, potentiodynamic polarization and electrochemical impedance spectroscopy. Effectiveness to give protection up to eight hours with slight changes in efficiency is observed in weight loss method. The results expose that the materials synthesized could give safe working environment in industrial maintenance work.","PeriodicalId":13865,"journal":{"name":"international journal of chemical sciences","volume":"8 1","pages":"1-13"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78699601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.21767/0972-768X.1000270
Srivastava Ak, Sinha Rk, S. Saxena, T. Kundu
A systematic study on the methyl substituted 2-hydroxypyridine molecule is presented in this paper to investigate the methylation effect in the ground electronic state (S0) using ab initio calculations. The minimum energy conformation of these molecules was evaluated using Hartree-Fock (HF), second order Mollar Plesset perturbation (MP2) and B3LYP density functional level of theories and TZVP Gaussian type basis set. B3LYP/TZVP level of theory was used for the natural bond orbital (NBO) calculations to get insight into the substitution energy of the stationary states and also to estimate the role of Lewis and non-Lewis (delocalization) energies. The present study reveals that stabilization of these molecules is due to the change in nuclear-electron interaction energy. However, the local interactions to methyl group are the responsible term for the delocalization energy contribution.
{"title":"Effect of Methylation on 2-Hydroxypyridine in Ground State: Theoretical Study","authors":"Srivastava Ak, Sinha Rk, S. Saxena, T. Kundu","doi":"10.21767/0972-768X.1000270","DOIUrl":"https://doi.org/10.21767/0972-768X.1000270","url":null,"abstract":"A systematic study on the methyl substituted 2-hydroxypyridine molecule is presented in this paper to investigate the methylation effect in the ground electronic state (S0) using ab initio calculations. The minimum energy conformation of these molecules was evaluated using Hartree-Fock (HF), second order Mollar Plesset perturbation (MP2) and B3LYP density functional level of theories and TZVP Gaussian type basis set. B3LYP/TZVP level of theory was used for the natural bond orbital (NBO) calculations to get insight into the substitution energy of the stationary states and also to estimate the role of Lewis and non-Lewis (delocalization) energies. The present study reveals that stabilization of these molecules is due to the change in nuclear-electron interaction energy. However, the local interactions to methyl group are the responsible term for the delocalization energy contribution.","PeriodicalId":13865,"journal":{"name":"international journal of chemical sciences","volume":"17 1","pages":"1-13"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89527150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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