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Indian Journal of Materials Science最新文献

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Crystal Growth and Characterization of a New NLO Material: p-Toluidine p-Toluenesulfonate 一种新型NLO材料:对甲苯胺对甲苯磺酸盐的晶体生长和表征
Indian Journal of Materials Science Pub Date : 2013-12-12 DOI: 10.1155/2013/680256
M. Suresh, S. A. Bahadur, S. Athimoolam
{"title":"Crystal Growth and Characterization of a New NLO Material: p-Toluidine p-Toluenesulfonate","authors":"M. Suresh, S. A. Bahadur, S. Athimoolam","doi":"10.1155/2013/680256","DOIUrl":"https://doi.org/10.1155/2013/680256","url":null,"abstract":"Single crystals of p-Toluidine p-Toluenesulfonate (PTPT), an organic nonlinear optical (NLO) material, have been grown by slow evaporation method at room temperature using ethanol as solvent. The crystal system was confirmed from the single crystal X-ray diffraction analysis. The functional groups were identified using FTIR spectroscopy. UV-Vis-NIR spectrum showed that the UV cut-off wavelength of PTPT occurs at 295 nm and it has insignificant absorption in the wavelength region of 532–800 nm. The SHG efficiency of PTPT was measured by employing Kurtz and Perry powder technique using a Q-switched mode locked Nd: YAG laser emitting 1064 nm for the first time and it was found to be 52% of standard KDP. Thermal and mechanical properties of PTPT were examined by TG/DTA and Vickers microhardness test, respectively.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"8 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2013-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81815975","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}
引用次数: 12
Preparation and Characterization of HPMC/PVP Blend Films Plasticized with Sorbitol 山梨醇增塑HPMC/PVP共混膜的制备与表征
Indian Journal of Materials Science Pub Date : 2013-12-12 DOI: 10.1155/2013/307514
H. Somashekarappa, Y. Prakash, K. Hemalatha, T. Demappa, R. Somashekar
{"title":"Preparation and Characterization of HPMC/PVP Blend Films Plasticized with Sorbitol","authors":"H. Somashekarappa, Y. Prakash, K. Hemalatha, T. Demappa, R. Somashekar","doi":"10.1155/2013/307514","DOIUrl":"https://doi.org/10.1155/2013/307514","url":null,"abstract":"The aim of this present work is to investigate the effect of plasticizers like Sorbitol on microstructural and mechanical properties of hydroxypropyl methylcellulose (HPMC) and Polyvinylpyrrolidone (PVP) blend films. The pure blend and plasticized blend films were prepared by solution casting method and investigated using wide angle X-ray scattering (WAXS) method. WAXS analysis confirms that the plasticizers can enter into macromolecular blend structure and destroy the crystallinity of the films. FTIR spectra show that there are a shift and decrease in the intensity of the peaks confirming the interaction of plasticizer with the blend. Mechanical properties like tensile strength and Young’s Modulus decrease up to 0.6% of Sorbitol content in the films. Percentage of elongation at break increases suggesting that the plasticized films are more flexible than pure blend films. These films are suitable to be used as environmental friendly and biodegradable packaging films.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"8 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2013-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81600371","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}
引用次数: 24
Growth of Hierarchically Structured High-Surface Area Alumina on FeCrAl Alloy Wires 分级结构高比表面积氧化铝在FeCrAl合金丝上的生长
Indian Journal of Materials Science Pub Date : 2013-12-11 DOI: 10.1155/2013/251495
Chandni Rallan, Aaron Akah, P. Hill, A. Garforth
{"title":"Growth of Hierarchically Structured High-Surface Area Alumina on FeCrAl Alloy Wires","authors":"Chandni Rallan, Aaron Akah, P. Hill, A. Garforth","doi":"10.1155/2013/251495","DOIUrl":"https://doi.org/10.1155/2013/251495","url":null,"abstract":"The formation of metastable alumina phases due to the oxidation of commercial FeCrAl alloy wires (0.5 mm thickness) at various temperatures and time periods has been examined. Samples were isothermally oxidised in air using a thermogravimetric analyzer (TGA). The morphology of the oxidised samples was analyzed using an Electronic Scanning Electron Microscope (ESEM) and X-ray on the surface analysis was done using an Energy Dispersive X-Ray (EDX) analyzer. The technique of X-Ray Diffraction (XRD) was used to characterize the phase of the oxide growth. The entire study showed that it was possible to grow high-surface area gamma alumina on the FeCrAl alloy wire surfaces when isothermally oxidised above 800°C over several hours.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"47 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2013-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83383438","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}
引用次数: 2
Effect of Steel Fibres and Low Calcium Fly Ash on Mechanical and Elastic Properties of Geopolymer Concrete Composites 钢纤维和低钙粉煤灰对地聚合物混凝土复合材料力学和弹性性能的影响
Indian Journal of Materials Science Pub Date : 2013-12-10 DOI: 10.1155/2013/357563
A. S. Sayyad, S. Patankar
{"title":"Effect of Steel Fibres and Low Calcium Fly Ash on Mechanical and Elastic Properties of Geopolymer Concrete Composites","authors":"A. S. Sayyad, S. Patankar","doi":"10.1155/2013/357563","DOIUrl":"https://doi.org/10.1155/2013/357563","url":null,"abstract":"Effect of steel fibres and low calcium fly ash on mechanical and elastic properties of geopolymer concrete composites (GPCC) has been presented. The study analyses the impact of steel fibres and low calcium fly ash on the compressive, flexural, split-tensile, and bond strengths of hardened GPCC. Geopolymer concrete mixes were prepared using low calcium fly ash and activated by alkaline solutions (NaOH and Na2SiO3) with solution to fly ash ratio of 0.35. Crimped steel fibres having aspect ratio of 50 with volume fraction of 0.0% to 0.5% at an interval of 0.1% by mass of normal geopolymer concrete are used. The entire tests were carried out according to test procedures given by the Indian standards wherever applicable. The inclusion of steel fibre showed the excellent improvement in the mechanical properties of fly ash based geopolymer concrete. Elastic properties of geopolymer concrete composites are also determined by various methods available in the literature and compared with each other.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"53 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2013-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87200406","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}
引用次数: 46
Physicochemical Studies on Thienyl Chalcone Derivative for Nonlinear Optical Application 非线性光学应用中噻吩基查尔酮衍生物的物理化学研究
Indian Journal of Materials Science Pub Date : 2013-12-05 DOI: 10.1155/2013/151230
A. N. Prabhu, A. Jayarama, K. Bhat, K. Manjunatha, G. Umesh, V. Upadhyaya
{"title":"Physicochemical Studies on Thienyl Chalcone Derivative for Nonlinear Optical Application","authors":"A. N. Prabhu, A. Jayarama, K. Bhat, K. Manjunatha, G. Umesh, V. Upadhyaya","doi":"10.1155/2013/151230","DOIUrl":"https://doi.org/10.1155/2013/151230","url":null,"abstract":"Single crystals of 1-(5-chlorothiophen-2-yl)-3-(2,4,5-trimethoxyphenyl)prop-2-en-1-one (CTTMP) having nonlinear optical property have been grown by slow evaporation technique. The functional groups were identified by FT-IR and NMR techniques. The mechanical property of the crystals was studied using Vicker's microhardness tester and the load dependence hardness was observed. The material is dimensionally stable up to 112°C. The dielectric properties of the crystals were determined using semiconductor characterization system. The optical limiting behavior of the crystal was studied using Z-scan technique.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"17 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2013-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81368290","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}
引用次数: 6
Synthesis and Characterization of Lithium-Substituted Cu-Mn Ferrite Nanoparticles 锂取代Cu-Mn铁氧体纳米颗粒的合成与表征
Indian Journal of Materials Science Pub Date : 2013-11-28 DOI: 10.1155/2013/910762
M. Quraishi, M. R. Khan
{"title":"Synthesis and Characterization of Lithium-Substituted Cu-Mn Ferrite Nanoparticles","authors":"M. Quraishi, M. R. Khan","doi":"10.1155/2013/910762","DOIUrl":"https://doi.org/10.1155/2013/910762","url":null,"abstract":"The effect of Li substitution on the structural and magnetic properties of LixCu0.12Mn0.88−2xFe2","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"11 8 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2013-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82882728","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}
引用次数: 2
Structural, Optical and Electrical Properties of Thin Films Using Nebulizer Spray Pyrolysis Technique 利用雾化器喷雾热解技术研究薄膜的结构、光学和电学性质
Indian Journal of Materials Science Pub Date : 2013-11-24 DOI: 10.1155/2013/516812
R. Mariappan, V. Ponnuswamy, P. Jayamurugan, R. Jayaprakash, R. Suresh
{"title":"Structural, Optical and Electrical Properties of Thin Films Using Nebulizer Spray Pyrolysis Technique","authors":"R. Mariappan, V. Ponnuswamy, P. Jayamurugan, R. Jayaprakash, R. Suresh","doi":"10.1155/2013/516812","DOIUrl":"https://doi.org/10.1155/2013/516812","url":null,"abstract":"thin films have been deposited on glass substrates at substrate temperature 400°C through nebulizer spray pyrolysis technique. X-ray diffraction (XRD) analysis shows that the films structure is changed from hexagonal to tetragonal. The high-resolution scanning electron microscopy (HRSEM) studies reveal that the substrate is well covered with a number of grains indicating compact morphology with an average grain size 50–79 nm. Energy dispersive X-ray analysis (EDAX) reveals the average ratio of the atomic percentage. Optical transmittance study shows the presence of direct transition. Band gap energy decreases from 3.33 to 2.87 eV with respect to the rise of Sn content. The electrical resistivity of the thin films was found to be 106 Ω-m.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"1 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2013-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90466021","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}
引用次数: 3
Optical Waveguiding Organic Nanorods Coated with Reversibly Switchable Fe(II) Spin Transition Nanoparticles 包覆可可逆切换铁(II)自旋跃迁纳米粒子的光波导有机纳米棒
Indian Journal of Materials Science Pub Date : 2013-11-18 DOI: 10.1155/2013/136178
Supratim Basak, Ajay Kumar Botcha, M. Ansari, Rajadurai Chandrasekar
{"title":"Optical Waveguiding Organic Nanorods Coated with Reversibly Switchable Fe(II) Spin Transition Nanoparticles","authors":"Supratim Basak, Ajay Kumar Botcha, M. Ansari, Rajadurai Chandrasekar","doi":"10.1155/2013/136178","DOIUrl":"https://doi.org/10.1155/2013/136178","url":null,"abstract":"A dual functional nanohybrid object combining photonic and magnetic properties was successfully prepared through a “bottom-up” self-assembly approach. In this method, spin transition Fe(II) coordination nanoparticles and optical wave guiding organic nanorods were generated in situ and successfully integrated together in a single pot through self-assembly. The Fe(II) nanoparticles coated on organic nanorods (nanohybrids) display temperature dependent reversible spin transition (Paramagnetic; diamagnetic; ) behavior. The nano-hybrids show efficient optical wave guiding behavior, which demonstrates the future possibility to perform light induced excited spin state trapping (LIESST) experiments on a single spin transition nanoparticle level. These photonic and magnetic “nanohybrids” offer promising option to externally manipulate spin state of the spin transition nanoparticles using temperature as well as remote laser light.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"36 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2013-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74774309","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}
引用次数: 1
Preparation and Characterization of Poly(vinyl alcohol)-chondroitin Sulphate Hydrogel as Scaffolds for Articular Cartilage Regeneration 聚乙烯醇-硫酸软骨素水凝胶的制备与表征
Indian Journal of Materials Science Pub Date : 2013-11-17 DOI: 10.1155/2013/516021
Shivani Nanda, Nikhil Sood, B. Reddy, T. Markandeywar
{"title":"Preparation and Characterization of Poly(vinyl alcohol)-chondroitin Sulphate Hydrogel as Scaffolds for Articular Cartilage Regeneration","authors":"Shivani Nanda, Nikhil Sood, B. Reddy, T. Markandeywar","doi":"10.1155/2013/516021","DOIUrl":"https://doi.org/10.1155/2013/516021","url":null,"abstract":"The aim of the study was to develop PVA-CS hydrogel scaffolds using glutaraldehyde as a cross-linking agent by chemical cross-linking method in order to obtain biomimetic scaffolds for articular cartilage regeneration. The introduction of PVA enhances the mechanical and bioadhesive properties to the native tissue while chondroitin sulphate enhances the glycosaminoglycan content of extracellular matrix. The role of hydrogel as cartilage regeneration scaffold was evaluated by swelling study, porosity, rheological behaviour, in vitro degradation, and quantification of released chondroitin sulphate. In vivo results showed that cross-linked hydrogels repaired defects with no sign of inflammation as it was well anchored to tissue in the formation of new articular surface. It may be concluded that the addition of chondroitin sulphate to the PVA polymer develops a novel composite with significant applications in cartilage tissue engineering.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"47 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2013-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74787411","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}
引用次数: 39
Development of Glass/Jute Fibers Reinforced Polyester Composite 玻璃/黄麻纤维增强聚酯复合材料的研制
Indian Journal of Materials Science Pub Date : 2013-11-11 DOI: 10.1155/2013/675264
A. Bindal, Satnam Singh, N. Batra, R. Khanna
{"title":"Development of Glass/Jute Fibers Reinforced Polyester Composite","authors":"A. Bindal, Satnam Singh, N. Batra, R. Khanna","doi":"10.1155/2013/675264","DOIUrl":"https://doi.org/10.1155/2013/675264","url":null,"abstract":"Composites play significant role as engineering material and their use has been increasing day by day due to their specific properties such as high strength to weight ratios, high modulus to weight ratio, corrosion resistance, and wear resistance. In present work, an attempt is made to hybridize the material using synthetic (glass) as well as natural fibres (chemically treated jute), such that to reduce the overall use of synthetic reinforcement, to reduce the overall cost, and to enhance the mechanical properties. All composite specimens with different weight percentages of fibres were manufactured using hand lay-up process and testing was done by using ASTM standards. Experimental results revealed that hybridization of composite with natural and synthetic fibres shows enhanced tensile strength, flexural strength, and impact strength. The content of natural reinforcement was found to be in the range of 25–33.3% for best results. The effect of treated jute on flexural properties was more than that on tensile properties, which was due to greater stiffness of jute fibers. Chemical treatment of jute fibers lowers the water absorption and results were comparable to glass fiber reinforced polyester composites. The addition of jute also reduced the overall cost by 22.18%.","PeriodicalId":13278,"journal":{"name":"Indian Journal of Materials Science","volume":"37 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2013-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76943917","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}
引用次数: 56
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