发布求助
文献互助 智能选刊 最新文献

Chemistry & Chemical Technology最新文献

筛选
英文 中文
Effects of Hydrophilic Silica Nanoparticles on Morphology and Mechanical Properties of a Typical Tyre Compound 亲水二氧化硅纳米颗粒对典型轮胎复合材料形貌和力学性能的影响
IF 0.9
Chemistry & Chemical Technology Pub Date : 2022-02-20 DOI: 10.23939/chcht16.01.150
Narjes Dortaj, A. Mohebbi, Hamidreza Bagheri, Majid Aman-Alikhani, Maryamossadat Rohani Yazdi
{"title":"Effects of Hydrophilic Silica Nanoparticles on Morphology and Mechanical Properties of a Typical Tyre Compound","authors":"Narjes Dortaj, A. Mohebbi, Hamidreza Bagheri, Majid Aman-Alikhani, Maryamossadat Rohani Yazdi","doi":"10.23939/chcht16.01.150","DOIUrl":"https://doi.org/10.23939/chcht16.01.150","url":null,"abstract":"This research aimed to study the effects of adding hydrophilic silica nanoparticles as nanofiller on tread properties of a typical tyre compound. In this respect, four compounds were prepared as a representative of the tread of the tyre. The amount of 0, 1, 3, and 5 phr (parts of filler per hundred parts of rubber) of nanofiller were added by melt mixing method. Physical and mechanical properties of compounds were measured. The structure and morphology of the fractured surface of the compounds were characterized using field emission scanning electron microscopy (Fe-SEM). The results of cure and mechanical analysis of the compound series showed that the sample containing 3 phr of nanofiller possesses better properties. This observation is due to higher interaction between nanofiller and polymer macromolecules that causes better dispersion of the nanoparticles in polymer matrix.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"45 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80788604","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: 0
Synthesis, Characterization and Biological Activity of Mixed Ligand (Imine of Benzidine and 1,10-Phenanthroline) Complexes with Fe(II), Co(II), Ni(II) and Cu(II) Ions 与Fe(II)、Co(II)、Ni(II)和Cu(II)离子混合配体(联苯胺和1,10-菲罗啉亚胺)配合物的合成、表征和生物活性
IF 0.9
Chemistry & Chemical Technology Pub Date : 2022-02-20 DOI: 10.23939/chcht16.01.015
Z. Hassan, Rawaa A. Alattar, Suhad Kareem Abass, Hayder Hamied Mihsen, Z. Abbas, K. Hussain
{"title":"Synthesis, Characterization and Biological Activity of Mixed Ligand (Imine of Benzidine and 1,10-Phenanthroline) Complexes with Fe(II), Co(II), Ni(II) and Cu(II) Ions","authors":"Z. Hassan, Rawaa A. Alattar, Suhad Kareem Abass, Hayder Hamied Mihsen, Z. Abbas, K. Hussain","doi":"10.23939/chcht16.01.015","DOIUrl":"https://doi.org/10.23939/chcht16.01.015","url":null,"abstract":"In this paper, binuclear metal complexes of the metal ions Fe(II), Co(II), Ni(II) and Cu(II) were synthesized by the reaction of the primary ligand (imine of benzidine) (H2L) and the secondary ligand (1,10-phenanthroline) (L`) with these metal ions in a molar ratio of 1:2:2, respectively. The complexes were characterized using CHN elemental analysis, FT-IR, UV-Vis, magnetic susceptibility, molar conductivity, 1H NMR, and TGA-DTA thermogravimetric analysis. According to the results obtained from the elemental analysis and spectral measurements where complexes of Fe(II), Co(II) and Ni(II) have octahedral geometry, while the complex with Cu(II) has a square planar geometry. All the prepared complexes are wholly stable and can keep for months without any significant change. The antibacterial activities of the prepared compounds were evaluated with regard to two bacteria species, gram-negative Proteus and Kelbsiella, by using diffusion agar plates. The inhibition zone diameter around the holes indicated the sensitivity of the bacteria to these compounds, where the Klebsiella bacteria were revealed to be more highly sensitive to these compounds than Proteus bacteria. All synthesized complexes showed more significant effects against Kelbsiella and Protea than the antibiotic (Amikacin).","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"1 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79796564","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: 0
Anomalous Sorption of Neodymium and Praseodymium Ions by Intergel System Polyacrylic Acid Hydrogel – Poly-4-Vinylpyridine Hydrogel 凝胶系聚丙烯酸-聚4-乙烯基吡啶水凝胶对钕和镨离子的异常吸附
IF 0.9
Chemistry & Chemical Technology Pub Date : 2022-02-20 DOI: 10.23939/chcht16.01.007
T. Jumadilov, R. Kondaurov, A. Imangazy, Khuangul Khimersen, Z. Malimbayeva
{"title":"Anomalous Sorption of Neodymium and Praseodymium Ions by Intergel System Polyacrylic Acid Hydrogel – Poly-4-Vinylpyridine Hydrogel","authors":"T. Jumadilov, R. Kondaurov, A. Imangazy, Khuangul Khimersen, Z. Malimbayeva","doi":"10.23939/chcht16.01.007","DOIUrl":"https://doi.org/10.23939/chcht16.01.007","url":null,"abstract":"This paper is devoted to study of sorption properties (sorption degree, polymer chain binding degree) of intergel system hydrogel of polyacrylic acid (hPAA) – hydrogel of poly-4-vinylpyridine (hP4VP) in relation to neodymium and praseodymium ions. It was found that remote interaction of the polymers in intergel pairs provides significant changes of the electrochemical and volume gravimetric properties. Strong increase of the swelling degree of hPAA is observed at the ratio 17%hPAA-83%hP4VP; significant increase of swelling degree of hP4VP is observed at the ratio 83%hPAA-17%hP4VP. Individual hydrogels of PAA and P4VP do not have sufficiently high sorption properties – sorption degree of neodymium and praseodymium ions is not higher than 65 %, polymer chain binding degree is not higher than 55 %. High ionization of hPAA and hP4VP due to remote interaction effect provides significant increase (up to 30 %) of the sorption properties. Maximum sorption of neodymium and praseodymium ions occurs at the ratios 83%hPAA-17%hP4VP and 50%hPAA-50%hP4VP (sorption degree is 93.5 % and 93.6 %, respectively). The highest values of polymer chain binding degree (in relation to neodymium and praseodymium ions) are observed at the ratios 83%hPAA-17%hP4VP and 50%hPAA-50%hP4VP – binding degree is 73.2 % and 75.4 %, respectively. Remote interaction provides possibilities for creation of innovative sorption technologies for selective sorption of aimed rare-earth elements.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"15 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84400818","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: 0
Synthesis, Characterization, Antimicrobial and Molecular Docking Study of Benzooxadiazole Derivatives 苯并恶二唑衍生物的合成、表征、抗菌及分子对接研究
IF 0.9
Chemistry & Chemical Technology Pub Date : 2022-02-20 DOI: 10.23939/chcht16.01.025
Amel Mohson Naji, A. Abdula, O. A. Nief, Ebtihal K. Abdullah
{"title":"Synthesis, Characterization, Antimicrobial and Molecular Docking Study of Benzooxadiazole Derivatives","authors":"Amel Mohson Naji, A. Abdula, O. A. Nief, Ebtihal K. Abdullah","doi":"10.23939/chcht16.01.025","DOIUrl":"https://doi.org/10.23939/chcht16.01.025","url":null,"abstract":"In this study, a series of new1,2,5-oxadiazole compounds derived from 4-chloro-7-nitro-benzo 1,2,5-oxadiazole was synthesized using different organic procedures. The resulting derivatives were chemically characterized and their structures were confirmed by FT-IR and NMR analysis. All the compounds were also evaluated for their antibacterial and antifungal activity against four types of pathogenic bacteria: S.aureus, S.epidermidis (as gram-negative bacteria), E.coli, Klebsiella spp. (as gram-positive bacteria) and the fungus Candida albicans using the agar well diffusion method. The synthesized oxadiazole derivatives exhibited significant antibacterial and moderate antifungal activities. Exploring the binding between the potent synthesized derivative 8 within the active site of glucosamine-6-phosphate synthase, the target enzyme for the antimicrobial agents was achieved using Autodock 4.2 package. The interaction modes of the generated conformers inside the binding pocket were found to enhance the in vitro results, and strongly recommended the new derivatives as promising antimicrobial agents.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"1 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90830783","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
A Green and Efficient Solvent- and Catalyst-Free Ultrasonic Dibenzylation Procedure 一种绿色高效的无溶剂、无催化剂的超声二苄基化工艺
IF 0.9
Chemistry & Chemical Technology Pub Date : 2022-02-20 DOI: 10.23939/chcht16.01.126
S. Heydari, D. Habibi, A. Faraji
{"title":"A Green and Efficient Solvent- and Catalyst-Free Ultrasonic Dibenzylation Procedure","authors":"S. Heydari, D. Habibi, A. Faraji","doi":"10.23939/chcht16.01.126","DOIUrl":"https://doi.org/10.23939/chcht16.01.126","url":null,"abstract":"A greener improvement was achieved for the synthesis of diverse N,N-dibenzylated compounds from the reaction of various aromatic amines with benzyl bromide using the ultrasound irradiation in solvent- and catalyst-free conditions. The dibenzylation reactions were carried out in different solvents and solvent-free conditions under ultrasound irradiation at various temperatures. The yields were very low in all applied solvents, while in the solvent-free condition and at room temperature, the yields were excellent. Due to obtaining the high reaction yields, the catalyst was not used.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"4 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82125550","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
Nanotechnologies for Preparation and Application of Metallic Nickel 金属镍的纳米制备技术及其应用
IF 0.9
Chemistry & Chemical Technology Pub Date : 2022-02-20 DOI: 10.23939/chcht16.01.074
I. Saldan, O. Dobrovetska, O. Makota
{"title":"Nanotechnologies for Preparation and Application of Metallic Nickel","authors":"I. Saldan, O. Dobrovetska, O. Makota","doi":"10.23939/chcht16.01.074","DOIUrl":"https://doi.org/10.23939/chcht16.01.074","url":null,"abstract":"Nanostructured nickel exhibits substantial surface area per unit volume and adjustable optical, electronic, magnetic, and biological properties, that makes nanofabricated nickel highly attractive as regards to its practical application in different fields of chemistry. Technologies on nickel nanomaterials including their simple preparation and modern application are summarized in this review.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"95 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76079934","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
Production of Bitumen Modified with Low-Molecular Organic Compounds from Petroleum Residues.4. Determining the Optimal Conditions for Tar Modification with Formaldehyde and Properties of the Modified Products 3 .石油渣油低分子有机化合物改性沥青的制备。确定甲醛改性焦油的最佳条件及改性后产品的性能
IF 0.9
Chemistry & Chemical Technology Pub Date : 2022-02-20 DOI: 10.23939/chcht16.01.142
V. Gunka, H. Bilushchak, Y. Prysiazhnyi, Yuriy Demchuk, Y. Hrynchuk, Iurii Sidun, O. Shyshchak, M. Bratychak
{"title":"Production of Bitumen Modified with Low-Molecular Organic Compounds from Petroleum Residues.4. Determining the Optimal Conditions for Tar Modification with Formaldehyde and Properties of the Modified Products","authors":"V. Gunka, H. Bilushchak, Y. Prysiazhnyi, Yuriy Demchuk, Y. Hrynchuk, Iurii Sidun, O. Shyshchak, M. Bratychak","doi":"10.23939/chcht16.01.142","DOIUrl":"https://doi.org/10.23939/chcht16.01.142","url":null,"abstract":"The effect of factors on the process of chemical modification of tar with formaldehyde using a sulfuric acid as the catalyst has been studied. By using experimental results, the adequate statistical-mathematical (ESM) model has been developed. Based on this model, the optimal values on the process of chemical modification of tar with formaldehyde using a sulfuric acid as the catalyst have been identified, bringing about optimal penetration value and softening point of the modified tars. Data predicted on the basis of the ESM model were compared with empirical evidence about modified tars preparation.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"10 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78594932","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: 10
Preparation of Briquettes on the Basis of Sub-Standard Coal of Kazakhstan Fields 以哈萨克斯坦油田次标煤为原料制备型煤
IF 0.9
Chemistry & Chemical Technology Pub Date : 2022-02-20 DOI: 10.23939/chcht16.01.118
M. Tulepov, Larissa R. Sassykova, A. Kerimkulova, G. Tureshova, F. Abdrakova, A. Zhapekova, Z. Sultanova, G. Spanova, D. Tolep, S. Gabdrashova, D. Baiseitov
{"title":"Preparation of Briquettes on the Basis of Sub-Standard Coal of Kazakhstan Fields","authors":"M. Tulepov, Larissa R. Sassykova, A. Kerimkulova, G. Tureshova, F. Abdrakova, A. Zhapekova, Z. Sultanova, G. Spanova, D. Tolep, S. Gabdrashova, D. Baiseitov","doi":"10.23939/chcht16.01.118","DOIUrl":"https://doi.org/10.23939/chcht16.01.118","url":null,"abstract":"A technology of briquetting of sub-standard coal of Kazakhstan fields to obtain high-quality briquetting fuel has been developed. A modifying additive in the form of oil residues has been selected, that make it possible to obtain a binder composition for brown coal briquetting. The material for the preparation of coal briquettes is coal fines from dry, poorly sintered coals, which cannot be used for direct combustion in the furnace. The optimal parameters for obtaining high-quality fuel briquettes have been determined. The introduction of a modifying additive into the oil residues makes it possible to obtain a binder composition for briquetting brown coal. Studies of the physical parameters of briquettes and the data of SEM showed that the thickness of the adsorption layer of coal and the cohesion of the binder in thin layers play an important role in the formation of the structure and strength of the briquette. It was assumed that at the optimum thickness of the film layer, the maximum manifestation of capillary forces and an increase in the adhesive interaction between the particles and the binder take place. The organic component of the coal fines is a mixture of various X-ray amorphous components, the presence and number of which vary in a series of metamorphism. The results of the performed studies show the possibility and prospects of using local raw materials for the development of high-quality briquetted brown coal fuel.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"48 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91259501","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
Study on the Composition and Properties of Pyrolysis Pyrocondensate of Used Tires 废旧轮胎热解焦凝物的组成及性能研究
IF 0.9
Chemistry & Chemical Technology Pub Date : 2022-02-20 DOI: 10.23939/chcht16.01.159
K. Hrynyshyn, V. Skorokhoda, T. Chervinskyy
{"title":"Study on the Composition and Properties of Pyrolysis Pyrocondensate of Used Tires","authors":"K. Hrynyshyn, V. Skorokhoda, T. Chervinskyy","doi":"10.23939/chcht16.01.159","DOIUrl":"https://doi.org/10.23939/chcht16.01.159","url":null,"abstract":"A low-temperature pyrolysis, the target product of which is pyrocondensate, is one of the options for the recycling usedtires. The fractional composition and properties of pyrocondensate of rubber waste pyrolysis obtained at an industrial plant have been studied. The pyrocondensate was separated into gasoline, diesel fraction and residue. The composition and properties of obtained productswere determined using X-ray fluorescence analysis and IR spectroscopic studies.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"1 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76566900","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
Synthesis and Properties of Phosphorus-Containing Pseudo-Poly(Amino Acid)sof Polyester Type Based on N-Derivatives of Glutaminic Acid 基于谷氨酰胺n -衍生物的含磷伪聚氨基酸软聚酯的合成及性能研究
IF 0.9
Chemistry & Chemical Technology Pub Date : 2022-02-20 DOI: 10.23939/chcht16.01.051
A. Stasiuk, N. Fihurka, V. Vlizlo, S. Prychak, D. Ostapiv, S. Varvarenko, V. Samaryk
{"title":"Synthesis and Properties of Phosphorus-Containing Pseudo-Poly(Amino Acid)sof Polyester Type Based on N-Derivatives of Glutaminic Acid","authors":"A. Stasiuk, N. Fihurka, V. Vlizlo, S. Prychak, D. Ostapiv, S. Varvarenko, V. Samaryk","doi":"10.23939/chcht16.01.051","DOIUrl":"https://doi.org/10.23939/chcht16.01.051","url":null,"abstract":"Poly(phosphoeter)s (PPE)s are a class of polymers possessing a high chemical functionality and biodegradability. Novel, glutamic acid based poly(phosphoeter)s were synthesized by the Steglich reaction. The developed synthetic approach allows controlling the composition and the structure of PPEs, and therefore their physical and colloidal properties. The studies on solubilization and cytotoxicity in vitro proved the potential of PPEs for drug delivery applications.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"41 3 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82851485","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: 4
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信