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The Use of Mussel Shell as a Bio-Additive for Poly(Lactic Acid) Based Green Composites 贻贝壳作为聚乳酸基绿色复合材料生物添加剂的应用
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.621
Metehan Oğulcan Lap, Y. Kanbur, Ümit Tayfun
{"title":"The Use of Mussel Shell as a Bio-Additive for Poly(Lactic Acid) Based Green Composites","authors":"Metehan Oğulcan Lap, Y. Kanbur, Ümit Tayfun","doi":"10.23939/chcht15.04.621","DOIUrl":"https://doi.org/10.23939/chcht15.04.621","url":null,"abstract":"Mussel shell is one of the most hazardous aquaculture wastes and its powder was used as an additive for bio-degradable poly (lactic acid) in this current study. Bio-composites were fabricated via conventional melt mixing technique followed by an injection moulding process. The effects of mussel shell powder inclusion on mechanical, melt-flow, water uptake and morphological performance of poly (lactic acid)-based green composites were reported.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"2 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75435088","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. 3. Tar Modified with Formaldehyde 2 .石油残渣低分子有机化合物改性沥青的制备。甲醛改性焦油
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.608
V. Gunka, Y. Prysiazhnyi, Y. Hrynchuk, Iurii Sidun, Yuriy Demchuk, O. Shyshchak, O. Poliak, M. Bratychak
{"title":"Production of Bitumen Modified with Low-Molecular Organic Compounds from Petroleum Residues. 3. Tar Modified with Formaldehyde","authors":"V. Gunka, Y. Prysiazhnyi, Y. Hrynchuk, Iurii Sidun, Yuriy Demchuk, O. Shyshchak, O. Poliak, M. Bratychak","doi":"10.23939/chcht15.04.608","DOIUrl":"https://doi.org/10.23939/chcht15.04.608","url":null,"abstract":"The chemical modification of tar with formaldehyde as 37% aqueous solutionhas been studied in the presence of the catalysts. Hydrochloric acid, sulfuric acid, sodium hydroxide and acid tar were used as the catalysts. The effect of the catalyst nature and amount, as well as temperature, process time and initial components ratio on the softening point, penetration, brittle point and adhesion to crushed stone has been determined. The structure of the modified tars was confirmed by IR spectroscopy. The structural-group composition was determined. Arene-formaldehyde resins have been synthesized on the basis of toluene and modified tars using hydrochloric acid as a catalyst. The synthesized resins were characterized using IR spectroscopy. The chemistry of the tar modification with formaldehyde has been proposed.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"330 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76574749","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: 9
Experimental Investigation and Multi-Gene Genetic Programming Simulation of Portland Clinker Burnability 硅酸盐熟料可燃性的实验研究及多基因遗传规划模拟
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.559
Vahab Ghalandari, Hamidreza Bagheri, A. Mohebbi, Hadi Esmaeili
{"title":"Experimental Investigation and Multi-Gene Genetic Programming Simulation of Portland Clinker Burnability","authors":"Vahab Ghalandari, Hamidreza Bagheri, A. Mohebbi, Hadi Esmaeili","doi":"10.23939/chcht15.04.559","DOIUrl":"https://doi.org/10.23939/chcht15.04.559","url":null,"abstract":"In this study, the effect of chemical composition of the raw material on the clinker burnability was studied by determination of free CaO (wt %) content of clinker. The burnability of two types of Portland clinker was investigated for silica modules of 2.3, 2.5 and 2.7 and lime saturation factor of 0.88–0.98. In addition, using the Multi-gene genetic programming (MGGP) model, the burnability of clinker was predicted. The results of MGGP model indicated that the performance of the model for predicting the amount of free CaO (wt %) was acceptable. Moreover, using MGGP, a promising correlation was introduced for accurately calculating the amount of free CaO (wt %). The performance of this correlation was compared with FL-Smidth, and it was established that the average errors of MGGP correlation and FL-Smidth equation were 2.95 and 7.45 %, respectively.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"51 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76664138","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
Cobalt Ferrite Nanocomposite as Electrochemical Sensor for The Detection of Guanine, Uric Acid and Their Mixture 纳米钴铁氧体复合材料检测鸟嘌呤、尿酸及其混合物的电化学传感器
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.520
Y. Kumar, V. Sharma, V. K. Vashistha, Rajasekhar VSR Pullabhotla, D. Das
{"title":"Cobalt Ferrite Nanocomposite as Electrochemical Sensor for The Detection of Guanine, Uric Acid and Their Mixture","authors":"Y. Kumar, V. Sharma, V. K. Vashistha, Rajasekhar VSR Pullabhotla, D. Das","doi":"10.23939/chcht15.04.520","DOIUrl":"https://doi.org/10.23939/chcht15.04.520","url":null,"abstract":"Cobalt ferrite nanocomposite was synthesized and characterized by analytical techniques such as FESEM, EDS and XRD. The average crystallite size was found to be in the range of 10–12 nm with a cubic structure. Further, the nanocomposite was used for the detection of guanine (GU) and uric acid (UA) and found to be an efficient electrode modifier. The lower limit of detection for GU and UA was found to be 300 nM and 400 nM, respectively","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"62 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79279640","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
Polymeric Composite Materials of Tribotechnical Purpose with a High Level of Physical, Mechanical and Thermal Properties 具有高水平物理、机械和热性能的摩擦学用途聚合物复合材料
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.543
O. Kabat, V. Sytar, O. Derkach, K. Sukhyy
{"title":"Polymeric Composite Materials of Tribotechnical Purpose with a High Level of Physical, Mechanical and Thermal Properties","authors":"O. Kabat, V. Sytar, O. Derkach, K. Sukhyy","doi":"10.23939/chcht15.04.543","DOIUrl":"https://doi.org/10.23939/chcht15.04.543","url":null,"abstract":"Polymeric composites (PC) of tribological applications with a high level of physical, mechanical and thermal properties based on aromatic polyamide and silica gel have been developed. Regularities have been obtained that describe the effect of the filler content in PC on the friction coefficient, temperature on the friction surface and the intensity of linear wear rate of the studied PC-steel friction pair. It was found that the optimal silica gel content in the polymer matrix is 10 wt %. The morphology of the steel surface of friction after friction interaction with PC based on aromatic polyamide and silica gel was studied. The formation of an antifriction film on the steel surface of friction was discovered, which contributes to a decrease in the friction coefficient, temperature on the friction surface, and the linear wear intensity of the studied PC. The influence of the load and sliding speed on the main tribotechnical characteristics of the PC-steel friction pair has been studied. Mathematical laws were derived that describe the influence of the main external factors (load and sliding speed) on the friction coefficient and intensity of linear wear rate of the studied friction pair. Physical, mechanical and thermal investigations of the developed PC were carried out and it was found that the introduction of 10 wt % silica gel contributes to their 5–10 % increase.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"74 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91216421","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
Characterization and Properties of Titanium(IV) Oxide, Synthesized by Different Routes 不同路线合成氧化钛的表征与性能
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.465
T. Dontsova, Anastasiya S. Kutuzova, A. Hosseini-Bandegharaei
{"title":"Characterization and Properties of Titanium(IV) Oxide, Synthesized by Different Routes","authors":"T. Dontsova, Anastasiya S. Kutuzova, A. Hosseini-Bandegharaei","doi":"10.23939/chcht15.04.465","DOIUrl":"https://doi.org/10.23939/chcht15.04.465","url":null,"abstract":"The article considers the influence of precursor type and sol-gel synthesis conditions of TiO2 on its properties. The obtained TiO2 samples were characterized by X-ray diffraction methods, electron microscopy, as a result of which it was found that all the obtained TiO2 powders have the crystallite size in a nanorange of 2.5–17 nm. It was shown that sorption-photocatalytic properties of TiO2 significantly depend on a phase composition, surface acidity, specific surface area and porosity. It was found that the amorphous TiO2 has improved adsorption properties, while crystalline TiO2 is characterized by enhanced photocatalytic properties. Determined acidic nature of the TiO2 surface explains the better sorption and photocatalysis relative to the cationic dye.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"13 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81194844","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
Synthesis of Antibacterially ActiveSilver Nanoparticles by Galvanic Replacement on Magnesium in Solutions of Sodium Polyacrylate in an Ultrasound 超声下聚丙烯酸钠溶液中镁的电替换合成抗菌活性银纳米颗粒
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.493
G. Zozulya, O. Kuntyi, R. Mnykh, M. Sozanskyi
{"title":"Synthesis of Antibacterially ActiveSilver Nanoparticles by Galvanic Replacement on Magnesium in Solutions of Sodium Polyacrylate in an Ultrasound","authors":"G. Zozulya, O. Kuntyi, R. Mnykh, M. Sozanskyi","doi":"10.23939/chcht15.04.493","DOIUrl":"https://doi.org/10.23939/chcht15.04.493","url":null,"abstract":"“Green” synthesis of silver nanoparticles (AgNPs) by a galvanic replacement (GR) on magnesium in solutions of sodium polyacrylate (NaPA) under ultrasound (42 kHz) is reported. The mechanism of combined action of GR and ultrasound on the formation of nanoparticles is proposed. Synthesized solutions of AgNPs are characterized by an absorption maximum at 410 nm, the value of which does not depend on the concentrations of precursors (AgNO3 and NaPA) and the duration of the process. The dimensions of nanoparticles that have a spherical shape do not exceed 30 nm. With increasing concentration of surfactant, there is a tendency to decrease in size. The rate of synthesis of AgNPs increases almost in proportion to the concentration of AgNO3 in the solution, while the effect of NaPA concentration is negligible. The synthesized nanoparticles efficiently demonstrated a bactericide effect on Escherichia coli and Staphylococcus aureus.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"25 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81254235","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
Mechanical and Chemical Studies of Al2O3-Ti Composites for Their Use as a Bone Substitute Al2O3-Ti复合材料骨替代物的力学和化学研究
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.591
Elizabeth Refugio-García, G. Vázquez-Huerta, J. Miranda-Hernández, J. Osorio-Ramos, José A. Rodríguez-García, E. Rocha-Rangel
{"title":"Mechanical and Chemical Studies of Al2O3-Ti Composites for Their Use as a Bone Substitute","authors":"Elizabeth Refugio-García, G. Vázquez-Huerta, J. Miranda-Hernández, J. Osorio-Ramos, José A. Rodríguez-García, E. Rocha-Rangel","doi":"10.23939/chcht15.04.591","DOIUrl":"https://doi.org/10.23939/chcht15.04.591","url":null,"abstract":"Alumina-based composites reinforced with titanium were manufactured by powder techniques. Characterizations indicate that titanium content affects densification which in turn causes positive effects on hardness and toughness. Microstructure presents grains of irregular shape and small sizes. Electrochemical impedance spectroscopy indicates that additions of titanium on Al2O3 enhance its corrosion resistance.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"37 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75092746","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 and Cross-Linking Properties of Melamine Formaldehyde Oligomers with Peroxy Groups 含过氧基三聚氰胺甲醛低聚物的合成及其交联性能
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-11-25 DOI: 10.23939/chcht15.04.512
O. Astakhova, O. Shyshchak, M. Bratychak
{"title":"Synthesis and Cross-Linking Properties of Melamine Formaldehyde Oligomers with Peroxy Groups","authors":"O. Astakhova, O. Shyshchak, M. Bratychak","doi":"10.23939/chcht15.04.512","DOIUrl":"https://doi.org/10.23939/chcht15.04.512","url":null,"abstract":"Melamine formaldehyde oligomers with peroxy groups (MFOP) have been synthesized based on melamine or urea and melamine in the presence of tert-butyl peroxymethanol or tert-butyl hydroperoxide. Zinc oxide was used as a catalyst. The effect of peroxide nature, ratio of the starting components and process time on the characteristics and yield of MFOP has been studied. The structure of the synthesized MFOP was confirmed by IR- and PMR-spectroscopy. The chemistry of the cross-linked structures formation was studied. The possibility of using such oligomers as a cross-linking agent for the mixtures based on TGM-3 oligoesteracrylate is shown.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"20 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82406390","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
Modification of the Electrode Pitch Operational Properties 电极节距操作特性的改进
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-08-15 DOI: 10.23939/chcht15.03.450
A. Starovoyt, E. Malyi, M. Chemerinskii, A. Timoshenko
{"title":"Modification of the Electrode Pitch Operational Properties","authors":"A. Starovoyt, E. Malyi, M. Chemerinskii, A. Timoshenko","doi":"10.23939/chcht15.03.450","DOIUrl":"https://doi.org/10.23939/chcht15.03.450","url":null,"abstract":"In this work, the influence of the carbon modifier type and its amount on the processes of carbonization of the electrode pitch and carbon masses for carbon production was investigated experimentally. The paper presents the processes that occur during the carbonization of the electrode pitch and the change in its properties during the modification process. It is shown that the most promising additive is a medium-boiling polymer mixture, which contributes to the carbonization of pitch and improves the physico-chemical properties.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"52 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88443896","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
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