Transactions of the Indian Ceramic Society最新文献_第9页

Dielectric and Thermal Behavior of Polystyrene/Sr2TiMnO6 (STMO) Composites 聚苯乙烯/Sr2TiMnO6 (STMO)复合材料的介电和热行为

IF 1.2 4区材料科学

Transactions of the Indian Ceramic Society Pub Date : 2021-04-03 DOI: 10.1080/0371750X.2021.1888806

A. Ashokbabu, P. Thomas

{"title":"Dielectric and Thermal Behavior of Polystyrene/Sr2TiMnO6 (STMO) Composites","authors":"A. Ashokbabu, P. Thomas","doi":"10.1080/0371750X.2021.1888806","DOIUrl":"https://doi.org/10.1080/0371750X.2021.1888806","url":null,"abstract":"Materials with high dielectric permittivity are in demand due to their potential applications in microelectronics, capacitors and related fields. Polymer/ceramic composites, due to their improved properties, can be studied to meet this demand. In this work, high permittivity double perovskite Sr2TiMnO6 (STMO) ceramics were synthesized by solid state reaction route and polystyrene (PS) composite thick films (∼200 μm) with up to 50 vol% loading of STMO were prepared by solution casting technique. The composite films were characterized using X-ray diffraction and Fourier transform infra-red spectroscopy for their structural properties. Microstructure of the composites was examined using scanning electron microscopy. Thermal behavior was studied using differential scanning calorimetry and thermo-gravimetric analysis. Dielectric properties, such as permittivity, loss and AC conductivity were measured using a dielectric impedance analyzer. Permittivity and dielectric loss of the base polymer were found to increase with the addition of STMO. Glass transition for composites shifted to higher temperature than that of pure PS. The composites exhibited enhanced thermal stability and these composite films can be explored as dielectric materials for capacitor applications. GRAPHICAL ABSTRACT","PeriodicalId":23233,"journal":{"name":"Transactions of the Indian Ceramic Society","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0371750X.2021.1888806","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45927990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Comparative Study on Compaction and Sintering Behavior of Spray and Freeze Granulated Magnesium Aluminate Spinel Powder 喷雾和冷冻颗粒状铝酸镁尖晶石粉末压实和烧结性能的比较研究

IF 1.2 4区材料科学

Transactions of the Indian Ceramic Society Pub Date : 2021-04-03 DOI: 10.1080/0371750X.2021.1887765

S. Manivannan, P. Biswas, P. Barick, S. Kumari, B. Saha, Roy Johnson

{"title":"Comparative Study on Compaction and Sintering Behavior of Spray and Freeze Granulated Magnesium Aluminate Spinel Powder","authors":"S. Manivannan, P. Biswas, P. Barick, S. Kumari, B. Saha, Roy Johnson","doi":"10.1080/0371750X.2021.1887765","DOIUrl":"https://doi.org/10.1080/0371750X.2021.1887765","url":null,"abstract":"Commercially procured magnesium aluminate (MgAl2O4) spinel powder with average particle size of 300 nm and irregular morphology were spray and freeze granulated. The granules were characterized for the texture, strength, granule size and its distribution. In order to evaluate the flowability of granules, rheological parameters, such as Carr index and Hausner ratio were measured. The granules were further subjected to quasi-static compaction under loading, unloading conditions and compaction curves were constructed. Compaction coefficients thus obtained were correlated with granulation conditions and other parameters including green densities. Compacted green samples were also subjected to flexural strength measurements following ASTM standards and fractographs were observed under FESEM. A Carr index of 13.7 and Hausner ratio of 1.16 were obtained for freeze dried granules indicating the superiority in flow behavior as compared to its spray granulated counterpart, thereby showing a better compaction behavior: compaction coefficient of 5.9 in combination with higher true and predicted green density values and lower granule strength of 1.22 MPa. The green samples exhibited a flexural strength of 11 and 12.5 MPa and compressive strength of 2.44 and 1.22 MPa for spray and freeze granulated sample, respectively. The above observations were also complemented by the fractographs. GRAPHICAL ABSTRACT","PeriodicalId":23233,"journal":{"name":"Transactions of the Indian Ceramic Society","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0371750X.2021.1887765","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46450337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Facile Synthetic Approach for Cu(OH)2-Cu2O Heterostructure: A Stable Catalyst for Pollutant Degradation Cu(OH)2-Cu2O异质结构的简易合成方法:一种稳定的污染物降解催化剂

IF 1.2 4区材料科学

Transactions of the Indian Ceramic Society Pub Date : 2021-04-03 DOI: 10.1080/0371750X.2021.1904289

Revathi Kottappara, S. Palantavida, B. Vijayan

{"title":"A Facile Synthetic Approach for Cu(OH)2-Cu2O Heterostructure: A Stable Catalyst for Pollutant Degradation","authors":"Revathi Kottappara, S. Palantavida, B. Vijayan","doi":"10.1080/0371750X.2021.1904289","DOIUrl":"https://doi.org/10.1080/0371750X.2021.1904289","url":null,"abstract":"In the present study, we report the development of morphologically different copper and Cu(OH)2-Cu2O nanostructures by a single step chemical reduction method using ascorbic acid as environmental friendly reducing agent. Morphology and crystallographic patterns of the synthesized samples were analyzed using X-ray diffraction and scanning electron microscopy. Determination of catalytic performance of both copper and Cu(OH)2-Cu2O nanostructure towards hydrogenation reduction of para nitrophenol and para nitroaniline using sodium borohydride as the reducing agent suggested that Cu(OH)2-Cu2O nanostructure is comparatively efficient in hydrogenating the nitro aromatic compounds. The improved hydrogenation capacity was suggested to be due to the formation of an in-situ composite of Cu2O-Cu during the time of reduction reaction. Analysis on the degradation capacity of developed samples for methyl orange degradation using sodium borohydride as the reducing agent indicated significantly high reduction rate for Cu(OH)2-Cu2O nanostructure with a rate constant value of 0. 819 min-1, which is higher than many of the previously reported values. GRAPHICAL ABSTRACT","PeriodicalId":23233,"journal":{"name":"Transactions of the Indian Ceramic Society","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0371750X.2021.1904289","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47273918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrical and Dielectric Characterization of Bismuth Holmium Nickel Titanate (BiHoNiTiO6) 钛酸铋-钬-镍（BiHoNiTiO6）的电学和介电特性

IF 1.2 4区材料科学

Transactions of the Indian Ceramic Society Pub Date : 2021-04-03 DOI: 10.1080/0371750X.2021.1904290

S. K. Dehury, Deeptimayee Khatua, R. Choudhary, P. Achary

{"title":"Electrical and Dielectric Characterization of Bismuth Holmium Nickel Titanate (BiHoNiTiO6)","authors":"S. K. Dehury, Deeptimayee Khatua, R. Choudhary, P. Achary","doi":"10.1080/0371750X.2021.1904290","DOIUrl":"https://doi.org/10.1080/0371750X.2021.1904290","url":null,"abstract":"A lead-free multiferroic double perovskite BiHoNiTiO6 (BHNT) was prepared at high temperature following mixed oxide solid state reaction mechanism. Structural evaluation by X-ray diffractogram suggested monoclinic crystal system for the BHNT. SEM images showed homogeneous morphology with almost similar and uniform grain distribution. The compound possessed low value of tanδ even at a high temperature (400oC) at 100 kHz. Evaluation of the dielectric and electrical plots with frequency and temperature obtained from the impedance spectroscopy revealed that the contributions of grains, grain boundaries and electrode has profound effect on the above properties. These plots are very much helpful to understand the conduction mechanism and microstructure characteristics of the electronic material. The experimental real and imaginary impedance data were modelled by designing an equivalent circuit with the capacitance and resistance parameter. The transport characteristics like σac (ac conductivity), electrical modulus and magneto-electric effect of the material were also reported in this paper. GRAPHICAL ABSTRACT","PeriodicalId":23233,"journal":{"name":"Transactions of the Indian Ceramic Society","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0371750X.2021.1904290","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44718732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thickness Effect on Permeance of CO2/CH4 Gases in CA Coated PVDF Composite Membranes 厚度对CO2/CH4气体在CA涂层PVDF复合膜中渗透性的影响

IF 1.2 4区材料科学

Transactions of the Indian Ceramic Society Pub Date : 2021-04-03 DOI: 10.1080/0371750X.2021.1880969

Ayesha Raza, Muhammad Fahad Yousaf, S. Farrukh, A. Hussain

{"title":"Thickness Effect on Permeance of CO2/CH4 Gases in CA Coated PVDF Composite Membranes","authors":"Ayesha Raza, Muhammad Fahad Yousaf, S. Farrukh, A. Hussain","doi":"10.1080/0371750X.2021.1880969","DOIUrl":"https://doi.org/10.1080/0371750X.2021.1880969","url":null,"abstract":"The aim of this work is to study the effect of membrane thickness with respect to gas permeance and tensile strength. The influence of membrane thickness on gas permeation has received little attention to date. Single layer flat sheet membrane with average thickness of 25 μm and dual layer composite membranes with variable thickness of skin layer were fabricated by coating CA/ PEG selective layer on the polyvinylidene fluoride porous support. Permeation experiments were performed with CO2 and CH4 which revealed that permeance of CO2 was pronounced compared to CH4. Highest permeance of 0.87 gas permeation unit (GPU) was obtained at 4 bar with 19.4 μm skin layer. Fourier transform infra-red spectroscopy was used to study the existence of different functional groups in the membranes. Strength of the membranes was analyzed using tensile testing machine. Scanning electron microscopy was used to study the surface structure and morphology. It was found that by reducing the membrane thickness, the permeance of CO2 and CH4 increased without compromising on membrane strength. GRAPHICAL ABSTRACT","PeriodicalId":23233,"journal":{"name":"Transactions of the Indian Ceramic Society","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0371750X.2021.1880969","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49457692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Development and Validation of RP-HPLC Method for Estimation of Methotrexate Drug Intercalated in Mg-Al Layered Double Hydroxide Nanoparticles 反相高效液相色谱法测定Mg-Al层状双氢氧化物纳米粒子中甲氨蝶呤药物的含量

IF 1.2 4区材料科学

Transactions of the Indian Ceramic Society Pub Date : 2021-04-03 DOI: 10.1080/0371750X.2021.1904291

A. Basu, Sayantan Ray, S. Saha, J. Chakraborty

{"title":"Development and Validation of RP-HPLC Method for Estimation of Methotrexate Drug Intercalated in Mg-Al Layered Double Hydroxide Nanoparticles","authors":"A. Basu, Sayantan Ray, S. Saha, J. Chakraborty","doi":"10.1080/0371750X.2021.1904291","DOIUrl":"https://doi.org/10.1080/0371750X.2021.1904291","url":null,"abstract":"In the present study, pristine magnesium aluminium layered double hydroxide (Mg-Al LDH, sample A) nanoparticles were synthesized by simple co-precipitation technique followed by intercalation of methotrexate drug (MTX), their detailed physicochemical characterization and development of RP-HPLC method for estimation of MTX intercalated in Mg-Al LDH nanoparticles (sample B). The PXRD analysis showed the basal spacing of 003 plane corresponding to sample A and sample B to be 8.63 Å and 11.39 Å, respectively. Particle size distributions were measured to be 56-75 nm (D50=66.15 nm) in case of sample A and 75-100 nm (D50=87.41 nm) for sample B. Simple, accurate RP-HPLC method was developed for estimation of the MTX drug from sample B, on Agilent HPLC 1200 system with UV detector on L1 column. 0.02 M potassium dihydrogen phosphate solution (pH 3.0) and acetonitrile (85:15 v/v) was used as mobile phase in an isocratic elution mode at a flow rate of 1.0 mL/min at 35°C with a load of 10 μL at 307 nm. The retention time for methotrexate was at 4.44 min. The method was validated as per ICH Q2 (R1) guidelines. The method was found to be linear over a concentration range of 10-100 μg/mL. GRAPHICAL ABSTRACT","PeriodicalId":23233,"journal":{"name":"Transactions of the Indian Ceramic Society","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0371750X.2021.1904291","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49410345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Perspective of Membrane Processes for the Removal of Arsenic from Water: An Overview 膜法去除水中砷的研究进展

IF 1.2 4区材料科学

Transactions of the Indian Ceramic Society Pub Date : 2021-01-02 DOI: 10.1080/0371750X.2020.1864665

S. Kundu, M. Naskar

引用次数: 7

Crystal Structure of 27R-SiAlON Synthesized Under Carbothermal Nitridation 碳热氮化合成27R-SiAlON的晶体结构

IF 1.2 4区材料科学

Transactions of the Indian Ceramic Society Pub Date : 2021-01-02 DOI: 10.1080/0371750X.2020.1852972

Mita Biswas, Aditi Sahoo, K. Muraleedharan, S. Bandyopadhyay

引用次数: 2

Effect of Zr/Ti Ratio on Piezoelectric and Dielectric Propertiesof 0.1Pb[Fe1/2Nb1/2]O3-0.9Pb[ZrxTi(1–x)]O30 Ceramics Zr/Ti比对0.1Pb[Fe1/2Nb1/2]O3-0.9Pb[ZrxTi(1-x)]O30陶瓷压电和介电性能的影响

IF 1.2 4区材料科学

Transactions of the Indian Ceramic Society Pub Date : 2021-01-02 DOI: 10.1080/0371750X.2021.1871647

L. Hamzioui, F. Kahoul, Abdrazek Guemache, M. Aillerie, A. Boutarfaia

引用次数: 2

Fabrication and Performance Analysis of Porcelain Stoneware Tiles Incorporated With Labware Glass Cullet 结合实验室玻璃片的陶瓷砖的制作及性能分析

IF 1.2 4区材料科学

Transactions of the Indian Ceramic Society Pub Date : 2021-01-02 DOI: 10.1080/0371750X.2021.1873864

Md Jahidul Haque, Ahsan Habib Munna, Suhanur Rahman, Ma-ariz Rahman

{"title":"Fabrication and Performance Analysis of Porcelain Stoneware Tiles Incorporated With Labware Glass Cullet","authors":"Md Jahidul Haque, Ahsan Habib Munna, Suhanur Rahman, Ma-ariz Rahman","doi":"10.1080/0371750X.2021.1873864","DOIUrl":"https://doi.org/10.1080/0371750X.2021.1873864","url":null,"abstract":"This study reported the effects of labware glass cullet on the properties of porcelain stoneware tiles. Five formulations of porcelain stoneware tiles (containing 0, 3, 6, 9, 12% borosilicate glass cullet) were prepared by adopting three different sintering temperatures (1100o, 1150o, 1200oC). The physical, microstructural and mechanical properties were analyzed. X-ray diffraction analysis ensured the presence of different crystalline phases in the samples. Morphological analysis also confirmed the results obtained from the XRD analysis. However, the density of the specimens increased within their operating parameters. Addition of glass cullet in the tiles increased the kinetics of the sintering process resulting in lower open porosity. Water absorption value of the samples sintered at 1200oC remained within the tolerance limit (∼0.5%). The lowest water absorption value (∼0.10%) as well as the highest linear shrinkage value (∼8.9%) were observed in the sample containing 12% glass cullet. Moreover, the usages of 12% glass cullet resulted in improved mechanical properties in comparison with other synthesized samples, whereas the values of compressive strength, impact strength and hardness were 51.65 MPa, 36.90 psi and 7.22 MPa, respectively. GRAPHICAL ABSTRACT","PeriodicalId":23233,"journal":{"name":"Transactions of the Indian Ceramic Society","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/0371750X.2021.1873864","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48596094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1