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7th International Conference on Advanced Materials and Structures, AMS 2018

作者： Hajikarimi, P. Shahsavari, H. Rahi, M. Sharif, F. Nejad, F.M. Department of Civil and Environmental Engineering Amirkabir University of Technology Hafez Avenue Tehran Iran Narmak Department of Civil Engineering Iran University of Science and Technology Tehran Iran Shahid Tondgooyan Blvd. RandD Department Pasargad Oil Company Tehran Iran Department of Polymer and Color Engineering Amirkabir University of Technology Hafez Avenue Tehran Iran

Different types of modifiers have been investigated to improve aging characteristics of asphalt binders. In this research, the effect of zinc stearate modification has been studied on aging resistance of asphalt binder. For this purpose, viscous flow properties and other rheological characteristics of neat and modified asphalt binders have been evaluated by using conventional experimental tests and superpave protocol test. In order to evaluate rheological behavior of asphalt binder in presence of zinc stearate, a neat asphalt binder sample with three modified samples containing 0.5, 1 and 2 wt% of zinc stearate were aged by means of the Rolling Thin Film Oven Test (RTFOT). The Brookfield rotational viscosity (RV) was implemented at six different temperatures from 100 to 200 degree of centigrade. Furthermore, the dynamic shear rheometer (DSR) was used for evaluating complex modulus (G∗) and phase angle (δ) of all neat and modified samples at 10, 20, 30, 40, 50 and 60°C in frequency sweep mode. To evaluate effect of adding zinc stearate by using viscosity results, proportion of asphalt binder's viscosity after aging to its viscosity before aging was defined as viscosity aging index (VAI). Results showed that adding zinc stearate to neat asphalt binder reduces the viscosity aging index. Results of frequency sweep test indicated that zinc stearate causes the values of complex shear modulus in aging asphalt binder approach to neat state which means the effect of zinc stearate modification is positive for improving aging resistance of asphalt binder. © Published under licence by IOP Publishing Ltd.

关键词： Viscosity

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2D Transition Metal Dichalcogenides for Photocatalysis

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Angewandte Chemie 2023年第13期135卷

作者： Ruijie Yang Yingying Fan Yuefeng Zhang Liang Mei Prof. Dr. Rongshu Zhu Prof. Dr. Jiaqian Qin Prof. Dr. Jinguang Hu Prof. Dr. Zhangxing Chen Prof. Dr. Yun Hau Ng Prof. Dr. Damien Voiry Prof. Dr. Shuang Li Prof. Dr. Qingye Lu Prof. Dr. Qian Wang Prof. Dr. Jimmy C. Yu Prof. Dr. Zhiyuan Zeng Department of Materials Science and Engineering State Key Laboratory of Marine Pollution City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong 999077 P. R. China Department of Chemical and Petroleum Engineering University of Calgary 2500 University Drive NW Calgary Alberta T2N 1N4 Canada Contribution: Writing - original draft (lead) Writing - review & editing (equal) Contribution: Writing - review & editing (equal) Contribution: Writing - review & editing (supporting) State Key Lab of Urban Water Resource and Environment School of Civil and Environmental Engineering Harbin Institute of Technology Shenzhen Shenzhen 518055 P. R. China Center of Excellence in Responsive Wearable Materials Metallurgy and Materials Science Research Institute Chulalongkorn University Bangkok 10330 Thailand Low-Carbon and Climate Impact Research Centre School of Energy and Environment City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong SAR P. R. China Institut Européen des Membranes IEM UMR 5635 Université Montpellier ENSCM CNRS Montpellier France College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China Graduate School of Engineering Nagoya University Furo-cho Chikusa-ku Nagoya 464-8603 Japan Institute for Advanced Research Nagoya University Furo-cho Chikusa-ku Nagoya 464-8601 Japan Department of Chemistry and Materials Science and Technology Research Centre The Chinese University of Hong Kong Shatin New Territories Hong Kong 999077 China Shenzhen Research Institute City University of Hong Kong Shenzhen 518057 China Contribution: Writing - original draft (equal) Writing - review & editing (lead)

Two-dimensional (2D) transition metal dichalcogenides (TMDs), a rising star in the post-graphene era, are fundamentally and technologically intriguing for photocatalysis. Their extraordinary electronic, optical, and chemical properties endow them as promising materials for effectively harvesting light and catalyzing the redox reaction in photocatalysis. Here, we present a tutorial-style review of the field of 2D TMDs for photocatalysis to educate researchers (especially the new-comers), which begins with a brief introduction of the fundamentals of 2D TMDs and photocatalysis along with the synthesis of this type of material, then look deeply into the merits of 2D TMDs as co-catalysts and active photocatalysts, followed by an overview of the challenges and corresponding strategies of 2D TMDs for photocatalysis, and finally look ahead this topic.

关键词： 2D TMDs Active Photocatalyst Cocatalyst MoS2 Photocatalysis

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Hierarchical Structures: programmable Building Blocks via Internal Stress engineering for 3D Collective Assembly (Adv. Mater. Technol. 12/2020)

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Advanced Materials Technologies 2020年第12期5卷 2070070-2070070页

作者： Woongbi Cho Dong Yoon Hahm Jae Ha Yim Jun Hee Lee Yun Ju Lee Dong‐Gyun Kim Yong Seok Kim Jeong Jae Wie Program in Environmental and Polymer Engineering Department of Polymer Science and Engineering Inha University 100 Inha‐ro Michuhol‐gu Incheon 22212 Republic of Korea Incheon Academy of Science and Arts 192 Academy‐ro Yeonsu‐gu Incheon 22009 Republic of Korea Chemical Materials Solutions Center Korea Research Institute of Chemical Technology 141 Gajeong‐ro Yuseong‐gu Daejeon 34114 Republic of Korea

In article number 2000758, Jeong Jae Wie and co‐workers present a nature‐inspired collective assembly of precisely designed 3D building blocks for scaled‐up hierarchical 3D architectures. The precise dimension control of 3D building blocks is successfully progressed by controlling the spatio‐temporal effect composed of fractal elements throughout the stages of fabrication. The concept of collective assembly extends the morphological diversity of the 3D structures and presents a construction of creatively assembled structures.

关键词： collective assembly hierarchical structures internal stress photopolymerization shape‐morphing

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Corrigendum to "Enhanced anaerobic digestion performance by two artificially constructed microbial consortia capable of woody biomass degradation and chlorophenols detoxification" [J. Hazard. Mater 389 (2020) 122076]

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Journal of hazardous materials 2021年 405卷 124326页

作者： Sameh S Ali Michael Kornaros Alessandro Manni Jianzhong Sun Abd El-Raheem R El-Shanshoury El-Refaie Kenawy Maha A Khalil Biofuels Institute School of the Environment and Safety Engineering Jiangsu University Zhenjiang 212013 China Botany Department Faculty of Science Tanta University Tanta 31527 Egypt. Laboratory of Biochemical Engineering & Environmental Technology (LBEET) Department of Chemical Engineering University of Patras 1 Karatheodori Str. University Campus 26504 Patras Greece. Department of Industrial Engineering University of Rome Tor Vergata Italy. Biofuels Institute School of the Environment and Safety Engineering Jiangsu University Zhenjiang 212013 China. Polymer Research Group Department of Chemistry Faculty of Science Tanta University Tanta 31527 Egypt. Botany Department Faculty of Science Tanta University Tanta 31527 Egypt Department of Biology College of Science Taif University P.O. Box 11099 Taif 21944 Saudi Arabia.

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Magnetic Nanocoils: Remote Control of Time-Regulated Stretching of Ligand-Presenting Nanocoils In Situ Regulates the Cyclic Adhesion and Differentiation of Stem Cells (Adv. Mater. 11/2021)

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Advanced Materials 2021年第11期33卷

作者： Sunhong Min Min Jun Ko Hee Joon Jung Wonsik Kim Seong-Beom Han Yuri Kim Gunhyu Bae Sungkyu Lee Ramar Thangam Hyojun Choi Na Li Jeong Eun Shin Yoo Sang Jeon Hyeon Su Park Yu Jin Kim Uday Kumar Sukumar Jae-Jun Song Seung-Keun Park Seung-Ho Yu Yun Chan Kang Ki-Bum Lee Qiang Wei Dong-Hwee Kim Seung Min Han Ramasamy Paulmurugan Young Keun Kim Heemin Kang Department of Materials Science and Engineering Korea University Seoul 02841 Republic of Korea Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA International Institute for Nanotechnology Evanston IL USA NUANCE Center Northwestern University Evanston IL USA Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology Daejeon 34141 Republic of Korea KU-KIST Graduate School of Converging Science and Technology Korea University Seoul 02841 Republic of Korea Department of Otorhinolaryngology-Head and Neck Surgery Korea University College of Medicine Seoul 08308 Republic of Korea Department of Radiology Molecular Imaging Program at Stanford Stanford University School of Medicine Stanford University Palo Alto CA 94304 USA Department of Chemical Engineering Kongju National University Cheonan 31080 Republic of Korea Department of Chemical and Biological Engineering Korea University Seoul 02841 Republic of Korea Department of Chemistry and Chemical Biology Rutgers University Piscataway NJ 08854 USA College of Polymer Science and Engineering State Key Laboratory of Polymer Materials and Engineering Sichuan University Chengdu 610065 China Department of Radiology Canary Center at Stanford for Cancer Early Detection Stanford University School of Medicine Stanford University Palo Alto CA 94304 USA Department of Biomicrosystem Technology Korea University Seoul 02841 Republic of Korea

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High Electric Field Conduction of polymers at Ambient and Elevated Temperatures

High Electric Field Conduction of Polymers at Ambient and El...

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Conference on Electrical Insulation and Dielectric Phenomena, (CEIDP)

作者： Chao Wu Zongze Li Lihua Chen Ajinkya Deshmukh Yifei Wang Rampi Ramprasad Gregory A. Sotzing Yang Cao Department of Electrical and Computer Engineering University of Connecticut Storrs CT United States School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA United States Polymer Program University of Connecticut Storrs CT United States Electrical Insulation Research Center Institute of Materials Science University of Connecticut Storrs CT United States

ISBN: (数字)9781728131214

ISBN: (纸本)9781728131221

The next generation electrical-power and electronic systems with wide band gap semiconductors require thin dielectric films operating under the extreme electric field at elevated temperatures. Here we investigated the conduction properties under high electric field up to 450 MV/m for biaxially oriented polypropylene (BOPP), which is the state-of-the-art commercially available polymer for capacitive applications, as well as three high-temperature polymers poly(ether ether ketone)(PEEK), poly(etherimide)(Ultem) and polyimide(Kapton). Further analysis was performed based on the hopping conduction mechanism. At elevated temperature, the increased thermally-assisted excitation energy gave rise to an increase of the hopping distance. It is argued that the large band gap provided a higher energy barrier to the charge hopping. If the band gap is large enough, the tunneling process dominated the charge transport, i.e., the case of BOPP. For high-temperature applications, both the thermal stability and large band gap are required in order to suppress the temperature and electric field dependent conduction.

关键词： Plastics Photonic band gap Electric fields Temperature measurement Thermal stability Current measurement Temperature

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Modular Construction of a Tessellated Octahedron, its Hierarchical Spherical Aggregate Behavior, and Electrocatalytic CO2Reduction Activity

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Angewandte Chemie 2022年第43期134卷

作者： Guotao Wang Yunna Yang Prof. Dr. Hui Liu Dr. Mingzhao Chen Dr. Zhiyuan Jiang Qixia Bai Dr. Jie Yuan Dr. Zhilong Jiang Dr. Yiming Li Prof. Dr. Pingshan Wang School of Metallurgy and Environment Central South University Changsha Hunan 410083 China Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution Changsha Hunan 410083 China Institute of Environmental Research at Greater Bay Area Key Laboratory for Water Quality and Conservation of the Pearl River Delta Ministry of Education Guangzhou Key Laboratory for Clean Energy and Materials Guangzhou University Guangzhou 510006 China Department of Organic and Polymer Chemistry Hunan Key Laboratory of Micro & Nano Materials Interface Science College of Chemistry and Chemical Engineering Central South University Changsha Hunan 410083 China School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 China

Coordination-driven self-assembly has led to the formation of various aesthetical polyhedrons and compounds with advanced functions. Whereas two-dimensional supramolecules with complex and giant skeletons are plentiful, the constructions of polyhedrons are limited by using basic polygons as the panels. Herein, we report the modular synthesis of a tessellated triangle and tessellated octahedron with metal-organic modules as the panels and formed via template-driven self-assembly. These architectures have diameters on the order of 10.9 nm and molecular weights greater than 84 kDa. Interestingly, fiber and spherical-like nanostructures could be formed from the tessellated triangles and octahedrons, respectively, through hierarchical self-assembly. In addition, after hybridization with carbon nanotubes, the supramolecules exhibit electrochemical reduction activity for CO 2 to CO.

关键词： Nano-Fiber Self-Assembly Self-Healing Template Oriented Terpyridine

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Back Cover Image, Volume 3, Number 1, March 2021

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Carbon Energy 2021年第1期3卷

作者： Israr Masood ul Hasan Luwei Peng Jianfeng Mao Ruiman He Yongxia Wang Jing Fu Nengneng Xu Jinli Qiao State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Environmental Science and Engineering Donghua University Shanghai China Shanghai Institute of Pollution Control and Ecological Security Shanghai China Institute for Superconducting and Electronic Materials Australian Institute of Innovative Materials University of Wollongong Wollongong New South Wales Australia School of Materials Science and Engineering Tongji University Shanghai China Department of Chemical Engineering University of Louisiana at Lafayette Lafayette Louisiana USA Institute for Materials Research and Innovation University of Louisiana at Lafayette Lafayette Louisiana USA

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Influence of Preparation Method on Properties of Natural Rubber/Sepiolite Composites

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Journal of Physics: Conference Series 2021年第1期2129卷

作者： Patiwarada Jitsopin Abdulhakim Masa Nabil Hayeemasae Mohamad Syahmie Mohamad Rasidi Rubber Engineering and Technology Program International College Prince of Songkla University Hat Yai Songkhla 90110 Thailand. Department of Rubber Technology and Polymer Science Faculty of Science and Technology Prince of Songkla University Pattani Campus Pattani 94000 Thailand. Faculty of Chemical Engineering Technology Universiti Malaysia Perlis (UniMAP) 01000 Perlis Malaysia. Centre of Excellence Geopolymer and Green Technology (CEGeoGTech) Universiti Malaysia Perlis (UniMAP) 01000 Perlis Malaysia.

Natural rubber (NR) composites filled with various sepiolite loadings were prepared and optimized by two different mixing methods, namely, melt mixing and latex mixing methods. The properties were evaluated through viscosity, stress relaxation, curing behaviors and tensile properties of rubber composites. The viscosity was influenced by sepiolite content and mixing methods. The greater interaction between rubber and sepiolite was obtained from melt mixing method. This reflected to the greater tensile strength found in this method. Considering the content of sepiolite, similar trend was observed for the curing properties and elongation at break. The greatest tensile strength was observed when the sepiloite content was at 1 phr.

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Effect of TPU hard segment content on TPU’s bead foaming behavior

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AIP Conference Proceedings 2020年第1期2205卷

作者： Emine Bursa Kucuk Bige Batı Mohammadreza Nofar 1Polymer Science and Technology Program Istanbul Technical University Maslak Istanbul 34469 Turkey 2Metallurgical & Materials Engineering Department Faculty of Chemical and Metallurgical Engineering Istanbul Technical University Maslak Istanbul 34469 Turkey

A lab-scale bead foaming reactor was used to investigate the foaming behavior of thermoplastic polyurethane (TPU) samples with different hard segment contents of around 39 %, 49 % and 57%. The saturation temperature, pressure, and time differently influenced the formation of hard segment crystals with different close-packed structures and sizes. Consequently, with the increase in hard segment crystallization during the saturation the heterogeneous cell nucleation was improved and the foam expansion was controlled by the stiffness of the TPU/CO2 mixture, solubility of CO2, and final shrinkage of the foamed samples. As the saturation temperature increased, the expansion ratio tended to increase with a tendency to shrink more due to the reduced crystallites content. This is while the cell density decreased due to the reduced hard segment crystallites generated during the saturation. Increase in pressure also improved the CO2 solubility and hence the expansion ratio was increased more significantly. The saturation time also influenced the amount and perfection degree of hard segment crystals. The interrelation between the crystallization behavior of the TPU bead foams and process conditions was reported using differential scanning calorimetry (DSC) and scanning electron microscope (SEM) analysis.

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