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The Influence of Peroxide on Bubble Stability and Rheological Properties of Biobased Poly(lactic acid)/Natural Rubber Blown Films

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Chinese Journal of Polymer Science 2022年第2期40卷 197-207页

作者： Peerapong Chanthot Noppadon Kerddonfag Cattaleeya Pattamaprom Research Unit in Polymer Rheology and Processing Department of Chemical EngineeringFaculty of EngineeringThammasat UniversityPathum Thani 12120Thailand National Metal and Materials Technology Center National Science and Technology Development AgencyThailand Science ParkPathum Thani 12120Thailand

This study investigated the effects of natural rubber(NR)and an organic peroxide on the rheological properties,mechanical properties,morphology,and bubble stability during film blowing of poly(lactic acid)(PLA).The NR and peroxide contents were varied from 0 wt%to 25 wt%and 0 wt%to 0.5 wt%,*** results confirmed that the presence of well-dispersed NR could significantly improve the toughness,elongation at break,and processability of PLA films,where the optimal amount of NR was 15 wt%.For the reactive blending with peroxide,a suitable peroxide content for good film toughness and clarity was 0.03 wt%,while the higher content of 0.1 wt%could provide slightly higher *** contents are considered much lower than that in the PLA system(without NR),which required up to 0.5 wt%*** rheological studies indicated that the melt strength,the storage modulus(G’)and complex viscosity(η*)at low frequency could be correlated with good film blowing processability of the PLA/NR films at low gel *** parameters failed to correlate in the films having high gel contents as the deformation rate experienced by each test was different leading to the different levels of response to the type and amount of gels.

关键词： Poly(lactic acid) Natural rubber Film blowing stability Peroxide Rheological properties

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Impacts of inclusion of additives on physical, microstructural, and mechanical properties of Alumina and Zirconia toughened alumina (ZTA) ceramic composite: A review

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Materials Today: Proceedings 2022年 62卷 2892-2918页

作者： Sarker, Saugata Mumu, Homayra Tabassum Al-Amin, Md. Zahangir Alam, Md. Gafur, M.A. Department of Materials and Metallurgical Engineering Bangladesh University of Engineering and Technology Dhaka 1000 Bangladesh Pilot Plant and Process Development Centre Bangladesh Council of Scientific and Industrial Research Dhaka 1205 Bangladesh Department of Applied Chemistry and Chemical Engineering University of Dhaka Dhaka 1000 Bangladesh

Zirconia toughened alumina (ZTA) is one of the widely discussed advanced ceramic in recent times. ZTA boasts excellent mechanically properties such as high hardness, high strength. Additionally, the material is chemically inert and possess greater compressive strength. Despite having such versatility, lack of fracture toughness and shock resistance prevent its utilization in broad scale. To improve the fracture toughness and other mechanical properties, metals, metallic oxides additives such as MgO, CaO, CeO2, Cr2O3, strontium hexa-alumina, Ag, Ni, FeO were commonly added to ZTA in the academic research. The purpose of this review paper is to provide a wholistic perspective on the trend of mechanical property alteration upon addition of different additives. Trend of mechanical property alteration such as density, fracture toughness, microhardness, strength provide a comparative analysis to solve this critical research and industrial problems. © 2022

关键词： Crystallinity

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Removal enhancement of persistent basic fuchsin dye from wastewater using an eco-friendly, cost-effective Fenton process with sodium percarbonate and waste iron catalyst

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Environmental Science and Pollution research 2024年第31期31卷 43673-43686页

作者： Aouni, Saoussen Imene Ghodbane, Houria Merouani, Slimane Lakikza, Imane Boublia, Abir Yadav, Krishna Kumar Djelloul, Chawki Albakri, Ghadah Shukri Elboughdiri, Noureddine Benguerba, Yacine Laboratory of Physics for Matter and Radiation Mohamed Cherif Messadia-Souk Ahras University P.O. Box 1553 Souk Ahras41000 Algeria Laboratory of Environmental Process Engineering Department of Chemical Engineering Faculty of Process Engineering University Salah Boubnider-Constantine 3 P.O. Box 72 Constantine25000 Algeria Département de Génie des Procédés Faculté de Technologie Université Ferhat ABBAS Sétif-1 Sétif19000 Algeria Faculty of Science and Technology Madhyanchal Professional University Ratibad Bhopal462044 India Environmental and Atmospheric Sciences Research Group Scientific Research Center Al-Ayen University Thi-Qar Nasiriyah64001 Iraq Laboratory of Reaction Engineering Faculty of Mechanical Engineering and Process Engineering USTHB Algiers Algeria Department of Teaching and Learning College of Education and Human Development Princess Nourah bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Chemical Engineering Department College of Engineering University of Ha’il Ha’il81441 Saudi Arabia Chemical Engineering Process Department National School of Engineers Gabes University of Gabes Gabes6029 Tunisia Ferhat Abbas Setif 1 University Setif Algeria

Abstract: In this comprehensive investigation, we evaluate the efficacy of the Fenton process in degrading basic fuchsin (BF), a resistant dye. Our primary focus is on the utilization of readily available, environmentally benign, and cost-effective reagents for the degradation process. Furthermore, we delve into various operational parameters, including the quantity of sodium percarbonate (SPC), pH levels, and the dimensions of waste iron bars, to optimize the treatment efficiency. In the course of our research, we employed an initial SPC concentration of 0.5 mM, a pH level of 3, a waste iron bar measuring 3.5 cm in length and 0.4 cm in diameter, and a processing time of 10 min. Our findings reveal the successful elimination of the BF dye, even when subjected to treatment with diverse salts and surfactants under elevated temperatures and acidic conditions (pH below 3). This underscores the robustness of the Fenton process in purifying wastewater contaminated with dye compounds. The outcomes of our study not only demonstrate the efficiency of the Fenton process but highlight its adaptability to address dye contamination challenges across various industries. Critically, this research pioneers the application of waste iron bars as a source of iron in the Fenton reaction, introducing a novel, sustainable approach that enhances the environmental and economic viability of the process. This innovative use of recycled materials as catalysts represents a significant advancement in sustainable chemical engineering practices. Graphical abstract: (Figure presented.). © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Iron

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Design,synthesis,and biological evaluation of 1,2,4-triazole derivatives as potent antitubercular agents

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Chinese chemical Letters 2024年第3期35卷 326-331页

作者： Yu Wen Shichun Lun Yuxue Jiao Wei Zhang Tianyu Hu Ting Liu Fan Yang Jie Tang Bing Zhang William R.Bishai Li-Fang Yu Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai 200062China Center for Tuberculosis Research Department of MedicineDivision of Infectious DiseaseJohns Hopkins School of MedicineBaltimoreMD21231-1044United States Shanghai Institute for Advanced Immunochemical Studies and School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China Shanghai Key Laboratory of Green Chemistry and Chemical Process School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai 200062China

Inhibition of mycobacterial membrane protein large 3(MmpL3)thereby affecting the mycolic acid biosynthetic pathway has been proven to be an effective strategy for developing antitubercular *** on the X-ray crystal structure of MmpL3 inhibitor complexes,a series of novel 1,2,4-triazole derivatives were designed,synthesized and evaluated antitubercular activity against Mtb strain *** structure–activity relationship exploration resulted in the identification of compounds 21 and 28,which possess potent antitubercular activity against Mtb strain H37Rv[minimum inhibitory concentration(MIC)=0.03–0.13μg/mL]and the clinical isolates of multidrug resistance(MDR)and extensive drug resistance(XDR)tuberculosis(MIC=0.06–1.0μg/mL).Moreover,compounds 21 and 28 showed neglectable cytotoxicity(IC_(50)≥32μg/mL)to the mammalian Vero cells and favorable physicochemical and pharmacokinetic properties according to the in silico absorption,distribution,metabolism and excretion(ADME)***,the potential target of representative 1,2,4-triazole 28 was identified to be MmpL3 using a microscale thermophoresis(MST)assay.

关键词： Tuberculosis MDR and XDR-TB MmpL3 inhibitor 1 2 4-Triazole Structure-based drug design

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Liquefied dimethyl ether as alternative extraction solvent for high γ-oryzanol rice bran oil:Systematic HSP theory and experimental evaluation

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Journal of Bioresources and Bioproducts 2024年第4期9卷 577-591页

作者： Phannipha Daisuk Seiichi Takami Masaki Honda Motonobu Goto Chonlatep Usaku Artiwan Shotipruk Bio-Circular-Green-economy Technology&Engineering Center BCGeTECDepartment of Chemical EngineeringFaculty of EngineeringChulalongkorn UniversityBangkok 10330Thailand Department of Materials Process Engineering Graduate School of EngineeringNagoya UniversityFuro-choChikusa-kuNagoya 464-8603Japan Department of Chemistry Faculty of Science&TechnologyMeijo UniversityShiogamaguchiTempaku-kuNagoyaAichi 468-8502Japan Super Critical Technology Centre Co.Ltd. Kuwan1Mie 511-0838Japan Research Unit on Sustainable Algal Cultivation and Applications Faculty of EngineeringChulalongkorn UniversityBangkok 10330Thailand

This study aimed to systematically find an alternative solvent to replace hexane for the extraction of bio-oil with high𝛾-oryzanol content from rice bran(RB).The selection involved predicting solubility through Hansen solubility theory,experimental validation,determination of suitable extraction conditions,and comparison of oil quality with that of conventional hexane.A wide variety of solvents:subcritical water(SCW),supercritical carbon dioxide(SCCO_(2)),bio-based sol-vents(alcohols and terpenes),and liquefied dimethyl ether(LDME),were initially assessed for rice bran oil(RBO)and𝛾-oryzanol solubility using Hansen solubility *** demon-strating high solubility for both RBO and𝛾-oryzanol,including LDME,ethyl acetate,acetone,and others(alcohols and SCCO_(2))known for effective vegetable oil extraction,were selected/identified for experimental extraction *** these,LDME performed better overall,affording greater solubility and requiring less solvent,shorter duration,lower pressure,and no additional co-solvents for equivalent *** conditions for LDME extraction were identified as 30℃ with a solvent-to-sample ratio of 10 mL/g and an extraction time of 10 *** extracted with LDME and hexane displayed similar fatty acid compositions and no adverse effects on RB protein and carbohydrate structures after LDME extraction were *** study demon-strates LDME as a promising alternative to replace hexane for RBO extraction to further valorize this abundant low-cost RB residue into bio-oil and its𝛾γ-oryzanol and de-oil RB co-products.

关键词： Rice bran oil γ-oryzanol Liquefied dimethyl ether Hansen solubility sphere Fourier transform infrared

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Efficient conversion of benzene and syngas to toluene and xylene over ZnO-ZrO_(2)&H-ZSM-5 bifunctional catalysts

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Chinese Journal of chemical engineering 2022年第5期35卷 203-210页

作者： Xiao Zhao Xuan Shi Zhongshun Chen Long Xu Chengyi Dai Yazhou Zhang Xinwen Guo Dongyuan Yang Xiaoxun Ma School of Chemical Engineering Northwest UniversityXi’an 710069China International Science&Technology Cooperation Base for Clean Utilization of Hydrocarbon Resources Chemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei EnergyCollaborative Innovation Center for Development of Energy and Chemical Industry in Northern ShaanxiNorthwest UniversityXi’an 710069China School of Chemical Engineering Dalian University of TechnologyDalian 116024China Shaanxi Key Laboratory of Energy Chemical Process Intensification School of Chemical Engineering and TechnologyXi’an Jiaotong UniversityXi’an 710049China Shanxi yanchang Petroleum(Group)Corp.LtdXi’an 710000China

A series of ZnO-ZrO_(2) solid solutions with different Zn contents were synthesized by the urea coprecipitation method,which were coupled with H-ZSM-5 zeolite to form bifunctional *** a new benzene alkylation reagent,syngas was used instead of methanol to realize the efficient conversion of syngas and benzene into toluene and xylene.A suitable ratio of ZnO-ZrO_(2) led to the significant improvement in the catalytic performance,and a suitable amount of acid helped to increase the selectivity of toluene/xylene and reduce the selectivity of the by-products ethylbenzene and C^(9+) *** highest benzene conversion of 89.2%and toluene/xylene selectivity of 88.7%were achieved over 10%ZnO-ZrO_(2)&H-ZSM-5(Si/Al=23)at a pressure of 3 MPa and a temperature of 450℃.In addition,the effect of the zeolite framework structure on product distribution was *** to the molecular dynamics of aromatic hydrocarbons,H-ZSM-5 zeolites comprise 10-membered-ring pores,which are beneficial to the activation of benzene;hence,the conversion of benzene is higher.H-ZSM-35 and HMOR zeolites exhibited small eight-membered-ring channels,which were not conducive to the passage of benzene;hence,the by-product ethylbenzene exhibits a higher *** distance between the active centers of the bifunctional catalysts was the main factor affecting the catalytic performance,and the powder mixing method was more conducive to the conversion of syngas and benzene.

关键词： ZnO-ZrO_(2) Bifunctional catalysts Aromatics Alkylation of benzene Syngas

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Characterization of the Three-dimensional Pore Structure of Coke Using the Maximal Ball Method

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ISIJ International 2025年第3期65卷 360-371页

作者： Igawa, Daisuke Matsuo, Shohei Matsushita, Yohsuke Aoki, Hideyuki Hayashizaki, Hideyuki Saito, Yasuhiro Department of Chemical Engineering Graduate School of Engineering Tohoku University 6-6-07 Aoba Aramaki Aoba-ku Sendai Miyagi980-8579 Japan Department of Sustainable Energy Hirosaki University 3 Bunkyo-cho Hirosaki Aomori036-8651 Japan Coal & Coke Research Department Ironmaking Research Laboratory Process Research Laboratories Research & Development Nippon Steel Corporation 20-1 Shintomi Futtsu Chiba293-8511 Japan Department of Applied Chemistry Kyushu Institute of Technology 1-1 Sensui-cho Tobata Kitakyushu Fukuoka804-8550 Japan

The three-dimensional pore structure and strength characteristics of two types of coke, Coke CC (produced from caking coal) and Coke LC (produced from low-quality coal), were assessed employing the maximal ball (MB) method and the finite element method (FEM). The MB analysis showed that Coke LC demonstrated larger and more connected pores, characterized by a higher coordination number, indicating greater pore connectivity. The FEM stress analysis showed that Coke LC displayed a less uniform matrix, leading to localized stress concentrations and increased anisotropy in the elastic modulus. These findings indicate that the lower drum strength of Coke LC is because of its nonuniform pore structure and higher susceptibility to stress concentration. Multiple regression analysis confirmed that pore connectivity, quantified by the coordination number, significantly impacts coke strength, with higher coordination numbers (greater than 8) being associated with increased elastic modulus. These results underscore the importance of a uniform, highly interconnected pore structure in enhancing coke strength, offering valuable insights for optimizing coke production to improve its mechanical properties. © 2025 The Iron and Steel Institute of Japan.

关键词： Coke

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State-of-the-art evolution of g-C_(3)N_(4)-based photocatalytic applications:A critical review

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Chinese Journal of Structural Chemistry 2024年第12期43卷 113-129页

作者： Yanghanbin Zhang Dongxiao Wen Wei Sun Jiahe Peng Dezhong Yu Xin Li Yang Qu Jizhou Jiang School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationNovel Catalytic Materials of Hubei Engineering Research CenterWuhan Institute of TechnologyWuhan430205PR China Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of EducationSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan430074PR China College of Forestry and Landscape Architecture South China Agricultural UniversityGuangzhou510642PR China Key Laboratory of Functional Inorganic Materials Chemistry(Ministry of Education) School of Chemistry and Materials ScienceInternational Joint Research Center for Catalytic TechnologyHeilongjiang UniversityHarbin150080PR China

g-C_(3)N_(4)is a promising non-metallic photocatalyst recognized for its unique structural and physicochemical *** reviews have addressed g-C_(3)N_(4)-based photocatalysis;however,the rapid progress in big data and artificial intelligence has significantly accelerated the design,synthesis,and optimization of these *** learning,theoretical simulations,and advanced in-situ characterization techniques have deepened our understanding of their photocatalytic *** review critically evaluates advancements in g-C_(3)N_(4)-based photocatalysts over the last two to three years,focusing on strategies to improve photogenerated charge sepa-ration,expand light absorption,and enhance stability and catalytic *** discusses cutting-edge in-situ characterization methods alongside machine learning approaches for predicting and optimizing applications in photocatalytic H_(2)evolution,CO_(2)reduction,pollutant degradation,H_(2)O_(2)production,and nitrogen ***,it proposes prospective strategies for further enhancing the performance of g-C_(3)N_(4)-based photocatalysts,aiming to guide the design of high-performance two-dimensional carbon-based photocatalysts.

关键词： g-C_(3)N_(4) Photocatalysis Enhancement strategies In-situ characterization Theoretical simulations

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Molecular dynamics simulation study onπ-πstacking of Gemini surfactants in oil/water systems

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Chinese Journal of chemical engineering 2022年第10期50卷 335-346页

作者： Jule Ma Peiwen Xiao Pingmei Wang Xue Han Jianhui Luo Ruifang Shi Xuan Wang Xianyu Song Shuangliang Zhao State Key Laboratory of Chemical Engineering and School of Chemical Engineering East China University of Science and TechnologyShanghai 200237China Research Institute of Petroleum Exploration&Development(RIPED) PetroChinaBeijing 100083China Key Laboratory of Nano Chemistry(KLNC) CNPCBeijing 100083China Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir School of Environmental and Chemical EngineeringChongqing Three Gorges UniversityChongqing 404100China Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology and School of Chemistry and Chemical Engineering Guangxi UniversityNanning 530004China

Whereas theπ-πstacking interactions at oil/water interfaces can affect interfacial structures hence the interfacial properties,the underlying microscopic mechanism remains largely *** reported an all-atom molecular dynamics(MD)simulation study to demonstrate how the Gemini surfactants with pyrenyl groups affect the interracial properties,structural conformations,and the motion of molecules in the water/n-octane/surfactant ternary *** is found that the pyrenyl groups tend to be vertical to the interface owing to theπ-πstacking ***,a synergistic effect between theπ-πinteraction and steric hindrance is found,which jointly affects the coalescence of liquid ***,the existence of aromatic groups and a moderate number of surfactants helps to form *** work provides a molecular understanding of Gemini surfactants with aromatic groups in microemulsion preparation and applications.

关键词： Surfactants Interface Interfacial tension p-p stacking Microemulsion Molecular simulation

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CFD modeling of droplet generation process for medical applications using the electrostatic impulse method

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chemical and process engineering - Inzynieria Chemiczna i Procesowa 2022年第3期43卷 331-355页

作者： Cendrowski, Piotr Kramek-Romanowsk, Katarzyna Lewinska, Dorota Grzeczkowicz, Marcin Korycka, Paulina Krzysztoforski, Jan Warsaw University of Technology Faculty of Chemical and Process Engineering Ludwika Warynskiego 1 Warsaw Poland Nalecz Institute of Biocybernetics and Biomedical Engineering Polish Academy of Sciences Ks. Trojdena 4 Warsaw Poland Foundation of Research and Science Development Rydygiera 8 Warsaw01-793 Poland

The electrostatic impulse method is an established method for producing microbeads or capsules. Such particles have found application in biomedical engineering and biotechnology. The geometric properties of the droplets - constituting precursors of microbeads and capsules - can be precisely controlled by adjusting the geometry of the nozzle system, the physical properties and the flow rate of the fluids involved, as well as the parameters of the electrostatic impulse. In this work, a method of mathematical modeling of the droplet generation process using the electrostatic impulse method in a single nozzle system is presented. The developed mathematical model is an extension of the standard Volume of Fluid (VOF) model by addition of the effect of the electric field on the fluid flow. The model was implemented into the OpenFOAM toolkit for computational fluid dynamics (CFD). The performed CFD simulation results showed good agreement with experimental data. As a result, the influence of all process parameters on the droplet generation process was studied. The most significant change in droplet generation was caused by changing the electrostatic impulse strength. The presented modeling method can be used for optimization of process design and for studying the mechanisms of droplet generation. It can be extended to describe multi nozzle systems used for one-step microcapsule production. © 2022. The Author(s).

关键词： Computational fluid dynamics

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