Pub Date : 2015-03-20DOI: 10.4236/OJOPM.2015.52003
O. Melad, Moataz A. Esleem
Chemical copolymerization of aniline with o-anthranilic acid in aqueous 1M HCl were carried out at differentmolar ratios of aniline and characterized by FTIR and UV-Visible spectroscopy, Elemental analysis and electrical conductivity. FromFTIR and UV-Vis. Spectroscopy, we observed that o-anthranilic acid has been introduced into the polymer chain successfully. The percent yield of o-anthanilic acid copolymer with aniline decreases as the percent of aniline increases.An increase in the % C can be observed as the amount of o-antranilc acid in the copolymer decrease or the amounts of aniline increase.
{"title":"Copolymers of aniline with o-anthranilic acid: Synthesis and charachterization","authors":"O. Melad, Moataz A. Esleem","doi":"10.4236/OJOPM.2015.52003","DOIUrl":"https://doi.org/10.4236/OJOPM.2015.52003","url":null,"abstract":"Chemical copolymerization of aniline with o-anthranilic acid in aqueous 1M HCl were carried out at differentmolar ratios of aniline and characterized by FTIR and UV-Visible spectroscopy, Elemental analysis and electrical conductivity. FromFTIR and UV-Vis. Spectroscopy, we observed that o-anthranilic acid has been introduced into the polymer chain successfully. The percent yield of o-anthanilic acid copolymer with aniline decreases as the percent of aniline increases.An increase in the % C can be observed as the amount of o-antranilc acid in the copolymer decrease or the amounts of aniline increase.","PeriodicalId":18076,"journal":{"name":"Macromolecules: An Indian Journal","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2015-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82120261","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 : 2012-07-27DOI: 10.4236/MNSMS.2012.23007
F. Aoumeur-Benkabou, M. Ameri, A. Kadoun, K. Benkabou
The full potential linear muffin-tin orbital (FP-LMTO) method was applied to study the structural and electronic properties of the compounds MgO, ZnO and their alloy MgxZn1–xO in the zincblende and NaCl structures. Results are obtained using the local density approximation (LDA), the ground-state properties like lattice constant and bulk modulus obtained agree very well with experimental and other theoretical calculations. The effect of composition on lattice constant from Vegard’s law and the bulk modulus was investigated. The microscopic origins of the gap bowing were explained by using the approach of Zunger and co-workers. It is concluded that the energy band gap bowing is primarily due to chemical charge-transfer effect. Contribution of volume deformation and structural relaxation to the gap bowing parameter is found to be very small.
{"title":"Theoretical study on the origins of the gap bowing in MgxZn1-xO alloys","authors":"F. Aoumeur-Benkabou, M. Ameri, A. Kadoun, K. Benkabou","doi":"10.4236/MNSMS.2012.23007","DOIUrl":"https://doi.org/10.4236/MNSMS.2012.23007","url":null,"abstract":"The full potential linear muffin-tin orbital (FP-LMTO) method was applied to study the structural and electronic properties of the compounds MgO, ZnO and their alloy MgxZn1–xO in the zincblende and NaCl structures. Results are obtained using the local density approximation (LDA), the ground-state properties like lattice constant and bulk modulus obtained agree very well with experimental and other theoretical calculations. The effect of composition on lattice constant from Vegard’s law and the bulk modulus was investigated. The microscopic origins of the gap bowing were explained by using the approach of Zunger and co-workers. It is concluded that the energy band gap bowing is primarily due to chemical charge-transfer effect. Contribution of volume deformation and structural relaxation to the gap bowing parameter is found to be very small.","PeriodicalId":18076,"journal":{"name":"Macromolecules: An Indian Journal","volume":"21 1","pages":"720-726"},"PeriodicalIF":0.0,"publicationDate":"2012-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80414932","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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