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Enhanced properties of PBAT by incorporating CNC

AIP Conference Proceedings 2023年第1期2607卷

作者： Emre Vatansever Dogan Arslan Deniz Sema Sarul Ali Durmus Mohammadreza Nofar Polymer Science and Technology Program Istanbul Technical University Maslak Istanbul 34469 Turkey Metallurgical & Materials Engineering Department Faculty of Chemical and Metallurgical Engineering Istanbul Technical University Maslak Istanbul 34469 Turkey Department of Chemical Engineering Faculty of Engineering Istanbul University-Cerrahpasa Avcılar Istanbul 34320 Turkey

In this study, cellulose nanocrystal (CNC) dispersion within polybutylene adipate terephthalate (PBAT) was investigated. PBAT/CNC nanocomposites with various CNC contents were prepared through solution casting as well as dilution of a solution casted masterbatch using a twin screw extruder. The efficiency of two different preparation approaches on CNC dispersion was assessed by transmission electron microscopic and rheological analysis. It was found that solution casted PBAT/CNC nanocomposites had a much better CNC dispersion compared to that of their melt processed counterparts. This was while the diluted melt processed cases also revealed a good level of CNC dispersion. As a result, CNC was able to form a percolation network within PBAT at CNC contents of around 2 and 4 wt% in the two approaches, respectively.

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Synthesis, properties, and applications of graphene oxide/reduced graphene oxide and their nanocomposites

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Nano Materials science 2019年第1期1卷 31-47页

作者： Andrew T. Smith Anna Marie LaChance Songshan Zeng Bin Liu Luyi Sun Polymer Program Institute of Materials Science University of Connecticut Storrs Connecticut 06269 United States Department of Chemical and Biomolecular Engineering University of Connecticut Storrs Connecticut 06269 United States of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China Department of Biomedical Engineering University of Connecticut Storrs Connecticut 06269 United States

Thanks to their remarkable mechanical, electrical, thermal, and barrier properties, graphene-based nanocomposites have been a hot area of research in the past decade. Because of their simple top-down synthesis, graphene oxide (GO) and reduced graphene oxide (rGO) have opened new possibilities for gas barrier, membrane separation, and stimuli-response characteristics in nanocomposites. Herein, we review the synthesis techniques most commonly used to produce these graphene derivatives, discuss how synthesis affects their key material properties, and highlight some examples of nanocomposites with unique and impressive properties. We specifically highlight their performances in separation applications, stimuli-responsive materials, anti-corrosion coatings, and energy storage. Finally, we discuss the outlook and remaining challenges in the field of practical industrial-scale production and use of graphene-derivative-based polymer nanocomposites.

关键词： Graphene oxide Reduced graphene oxide Graphene quantum dots polymer Nanocomposites Synthesis Properties of graphene and graphene oxide Applications

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The Impact of Supersaturated Electrode on Heterogeneous Lithium Nucleation and Growth Dynamics

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Angewandte Chemie 2024年第48期136卷

作者： Jimin Park Ji In Jung Son Ha Do Hyun Kim Hyun-Seok Jang Prof. Byung Hoon Kim Prof. Hyung-Kyu Lim Prof. Hyoung-Joon Jin Prof. Young Soo Yun KU-KIST Graduate School of Converging Science and Technology Korea University 145 Anam-ro Seongbuk-gu 02841 Seoul Republic of Korea Program in Environmental and Polymer Engineering Inha University 100 Inha-ro Michuhol-gu 22212 Incheon Republic of Korea Department of Physics Incheon National University 22012 Incheon Republic of Korea Division of Chemical Engineering and Bioengineering Kangwon National University 24341 Chunchenon Gangwon-do South Korea Department of Polymer Science and Engineering Inha University 100 Inha-ro Michuhol-gu 22212 Incheon Republic of Korea Department of Integrative Energy Engineering Korea University 145 Anam-ro Seongbuk-gu 02841 Seoul Republic of Korea

The concept of a lithiophilic electrode proves inadequate in describing carbon-based electrode materials due to their substantial mismatch in surface energy with lithium metal. However, their notable capacity for lithium chemisorption can increase active lithium concentration required for nucleation and growth, thereby enhancing the electrochemical performance of lithium metal anodes (LMAs). In this study, we elucidate the effects of the supersaturated electrode which has high active lithium capacity around equilibrium lithium potential on LMAs through an in-depth electrochemical comparison using two distinct carbon electrode platforms with differing carbon structures but similar two-dimensional morphologies. In the supersaturated electrode, both the dynamics and thermodynamic states involved in lithium nucleation and growth mechanisms are significantly improved, particularly under continuous current supply conditions. Furthermore, the chemical structures of the solid-electrolyte-interface layers (SEIs) are greatly influenced by the elevated surface lithium concentration environment, resulting in the formation of more conductive lithium-rich SEI layers. The improved dynamics and thermodynamics of surface lithium, coupled with the formation of enhanced SEI layers, contribute to higher power capabilities, enhanced Coulombic efficiencies, and improved cycling performances of LMAs. These results provide new insight into understanding the enhancements in heterogeneous lithium nucleation and growth kinetics on the supersaturated electrode.

关键词： supersaturated electrode lithiophilic electrode carbon electrode lithium metal anode lithium nucleation and growth

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Monomer Design Enables Mechanistic Mapping of Anionic Ring-Opening polymerization of Aromatic Thionolactones

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Angewandte Chemie 2025年

作者： Shaoqiu Zheng Dr. Shu-Sen Chen Dr. Yang-Yang Li Minjian Liao Xuhui Liang Ke Li Prof. Xiaopeng Li Prof. Jinming Hu Prof. Dian-Feng Chen Hefei National Research Center for Physical Sciences at the Microscale and Department of Polymer Science and Engineering University of Science and Technology of China Hefei Anhui 230026 China College of Chemistry and Environmental Engineering Shenzhen University Shenzhen Guangdong 518060 China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Shanghai 200032 China

Degradable chalcogenide polyesters, e.g., polythioesters (PTEs), typically exhibit improved thermal, mechanical, and optical properties. Anionic ring-opening polymerization (ROP) of thionolactones, an intrinsically promising yet underexplored approach to accessing PTEs, however, is still limited by: intolerance of metal catalysts, inadequate control over chain growth, and the absence of aromatic system. Monomer design-boosted mechanistic studies may address the above challenges. Here, we present a new and highly reactive thionolactone synthesized from 1,1′-binaphthyl-2,2′-diol (BINOL). Our investigations into polymerization kinetics and thermodynamics have underscored the importance of rapid initiation, eventually leading to the discovery of tetrabutylammonium 2-naphthyl-thiocarboxylate as a distinctive initiator that enables genuinely controlled and living polymerization of thionolactones. Ultimately, the atropisomerism inherent in BINOL has resulted in the creation of axially chiral PTE materials with tailored molecular weights, enantiomeric compositions, and topologies.

关键词： degradable polymers controlled and living polymerization aromatic thionolactone chiral polythioester DFT calculations

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High-Performance 3-D Fiber Network Composite Electrolyte Enabled with Li-Ion Conducting Nanofibers and Amorphous PEO-Based Cross-Linked polymer for Ambient All-Solid-State Lithium-Metal Batteries

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Advanced Fiber Materials 2019年第1期1卷 46-60页

作者： Chaoyi Yan Pei Zhu Hao Jia Jiadeng Zhu R.Kalai Selvan Ya Li Xia Dong Zhuang Du Indunil Angunawela Nianqiang Wu Mahmut Dirican Xiangwu Zhang Fiber and Polymer Science Program Department of Textile EngineeringChemistry and ScienceWilson College of TextilesNorth Carolina State UniversityRaleighNC 27695-8301USA Department of Physics and Organic and Carbon Electronics Lab North Carolina State UniversityRaleighNC 27695-8301USA Department of Mechanical and Aerospace Engineering West Virginia UniversityMorgantownWV 26506USA

Solid electrolytes have gained attention recently for the development of next-generation Li-ion batteries since they can fun-damentally improve the battery stability and *** various types of solid electrolytes,composite solid electrolytes(CSEs)exhibit both high ionic conductivity and excellent interfacial contact with the *** active nanofib-ers into the polymer matrix demonstrates an effective method to fabricate ***,current CSEs based on traditional poly(ethylene oxide)(PEO)polymer suffer from the poor ionic conductivity of PEO and agglomeration effect of inorganic fillers at high concentrations,which limit further improvements in Li+conductivity and electrochemical ***,we synthesize a novel PEO based cross-linked polymer(CLP)as the polymer matrix with naturally amorphous structure and high room-temperature ionic conductivity of 2.40×10^(−4)S cm^(−1).Li_(0.3)La_(0.557)TiO_(3)(LLTO)nanofibers are incorporated into the CLP matrix to form composite solid electrolytes,achieving enhanced ionic conductivity without showing filler *** high content of Li-conductive nanofibers improves the mechanical strength,ensures the conductive network,and increases the total Li+conductivity to 3.31×10^(−4)S cm^(−1).The all-solid-state Li|LiFePO_(4)batteries with LLTO nanofiber-incorporated CSEs are able to deliver attractive specific capacity of 147 mAh g^(−1)at room temperature,and no evident dendrite is found at the anode/electrolyte interface after 100 cycles.

关键词： Cross-linked PEO polymer Li_(0.33)La_(0.55)TiO_(3)nanofibers Composite solid electrolyte All-solid-state batteries Ambient working temperature

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A sustainable and green approach towards the utilization of biopolymers for effective wound dressing applications: A detailed review

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Nano-Structures and Nano-Objects 2024年 37卷

作者： Verma, Deepak Okhawilai, Manunya Nangan, Senthilkumar Thakur, Vijay Kumar Gopi, Sreeraj Kuppusamy, Kanagaraj Sharma, Mohit Uyama, Hiroshi International Graduate Program of Nanoscience and Technology Chulalongkorn University Bangkok Thailand Metallurgy and Materials Science Research Institute Chulalongkorn University Bangkok 10330 Thailand Center of Excellence in Polymeric Materials for Medical Practice Devices Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok 10330 Thailand Biorefining and Advanced Materials Research Centre SRUC Kings Buildings West Mains Road Edinburgh EH9 3JG United Kingdom Centre for Research and Development Chandigarh University Punjab Mohali 140413 India Gdansk University of Technology Faculty of Chemistry Polymer Technology Department Gdansk Poland Molecule Food solutions Pvt Ltd Prestiga Atlanda Karnataka Bengaluru 560034 India Center for Supramolecular Chemistry & Catalysis and Department of Chemistry College of Science Shanghai University 99 Shang-Da Road Shanghai 200444 China Institute of Materials Research and Engineering (IMRE) Agency for Science Technology and Research (A⁎STAR) 2 Fusionopolis Way Innovis #08-03 Singapore 138634 Singapore Department of Applied Chemistry Graduate School of Engineering Osaka University Osaka 565-0871 Japan

Millions of people worldwide are suffering and struggling to obtain the most effective wound care/treatment. In previous years, a steep rise in metabolic disorders such as diabetic wound ulcers has been noticed. The primary function of an effective wound dressing is to protect the wound bed from contamination and provide an accelerated healing environment. Biopolymers, a natural boon, can be used for distinct applications from food packaging, biomedicine, and biomedical applications. Natural and synthetic biopolymers have distinct advantages, such as biocompatibility, biodegradability, and environmental friendliness. Cellulose, chitosan, alginates, hyaluronic acid, collagen, etc., are natural biopolymers primarily used to develop wound dressings. Most common synthetic biopolymers such as PVA, PCL, and PLA are examples of how an individual biopolymer or its blends can be used to develop an effective wound dressing. Biopolymer properties for wound dressing applications can be improved by applying the concepts of nanotechnology, bioengineering, and drug delivery. These improvements may help meet the current and future wound care demands for tissue repair and restoration. The current review focuses on using natural and synthetic functionalized biopolymers for effective wound-dressing applications and exhibiting their antibacterial and antimicrobial properties. © 2024 Elsevier B.V.

关键词： Biopolymer functionalization Drug delivery Natural and synthetic Biopolymers Wound dressings Wounds

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Annual research review of perovskite solar cells in 2023

材料展望（英文）

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材料展望（英文） 2024年第2期3卷 161-213页

作者： Qisen Zhou Xiaoxuan Liu Zonghao Liu Yanqing Zhu Jianfeng Lu Ziming Chen Canjie Li Jing Wang Qifan Xue Feifei He Jia Liang Hongyu Li Shenghao Wang Qidong Tai Yiqiang Zhang Jiehua Liu Chuantian Zuo Liming Ding Zhenghong Xiong Renhao Zheng Huimin Zhang Pengjun Zhao Xi Jin Pengfei Wu Fei Zhang Yan Jiang Huanping Zhou Jinsong Hu Yang Wang Yanlin Song Yaohua Mai Baomin Xu Shengzhong Liu Liyuan Han Wei Chen Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyLuoyu Road 1037Wuhan 430074People's Republic of China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyLuoyu Road 1037Wuhan 430074People's Republic of China Optics Valley Laboratory Hubei 430074People's Republic of China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070People's Republic of China State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and DevicesSchool of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640People's Republic of China School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006People's Republic of China Department of Materials Science State Key Laboratory of Photovoltaic Science and TechnologyFudan University220 Handan RoadShanghai 200433People's Republic of China Materials Genome Institute Shanghai UniversityShangda Rd.99Shanghai 200444People's Republic of China The Institute of Technological Sciences Wuhan UniversityWuhan 430072People's Republic of China College of Chemistry Zhengzhou UniversityZhengzhou 450001People's Republic of China Future Energy Laboratory School of Materials Science and EngineeringHefei University of TechnologyHefei 230009People's Republic of China Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190People's Republic of China School of Chemical Engineering Center for Antibonding Regulated CrystalsSungkyunkwan UniversitySuwon 16419Republic of Korea State Key Laboratory of Functional Materials and Devices for Special Environmental Conditions Xinjiang Key Laboratory of Electronic Information Materials and Devices Xinjiang Technical Institute of Physics & ChemistryCAS40-1 South Beijing RoadUrumqi 830011People's Republic of China S

Perovskite(PVK)solar cells(PSCs)have garnered considerable research interest owing to their cost-effectiveness and high efficiency.A systematic annual review of the research on PSCs is essential for gaining a comprehensive understanding of the current research ***,systematic analysis of the research papers on PSCs reporting key findings in 2023 was *** on the results,the papers were categorized into six classifications,including regular n-i-p PSCs,inverted p-i-n PSCs,PVK-based tandem solar cells,PVK solar modules,device stability,and lead toxicity and green ***,a detailed overview and summary of the annual research advancements within each classification were ***,this review serves as a valuable resource for guiding future research endeavors in the field of PSCs.

关键词： perovskite solar cells annual review systematic review

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Author Correction: Porous organic polycarbene nanotrap for efficient and selective gold stripping from electronic waste

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Nature communications 2023年第1期14卷 649页

作者： Xinghao Li Yong-Lei Wang Jin Wen Linlin Zheng Cheng Qian Zhonghua Cheng Hongyu Zuo Mingqing Yu Jiayin Yuan Rong Li Weiyi Zhang Yaozu Liao State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 China. Department of Materials and Environmental Chemistry Stockholm University Stockholm 10691 Sweden. College of Chemistry and Chemical Engineering Donghua University Shanghai 201620 China. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 China. wyzhang@***. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai 201620 China. yzliao@***.

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Membrane technologies for heavy metals removal from water and wastewater: A mini review

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Case Studies in Chemical and environmental engineering 2024年 9卷

作者： Birniwa, Abdullahi Haruna Habibu, Shehu Abdullahi, Shehu Sa'ad Mohammad, Rania Edrees Adam Hussaini, Abdulmalik Magaji, Hamza Al-dhawi, Baker Nasser Saleh Noor, Azmatullah Jagaba, Ahmad Hussaini Department of Chemistry Facaulty of Natural and Applied Science Sule Lamido University Kafin-Hausa Jigawa State Nigeria Department of Pure & Industrial Chemistry Faculty of Physical Sciences Bayero University Kano Kano 3011 Nigeria Department of Polymer Technology Hussaini Adamu Federal Polytechnic Kazaure P.M.B 5004 Jigawa State Nigeria Open University of Sudan Faculty of Education Sciences Department Khartoum Sudan Department of Biological Sciences Faculty of Science and Information Technology Federal University of Technology Jigawa Babura Nigeria Department of Civil and Environmental Engineering Universiti Teknologi PETRONAS Malaysia Interdisciplinary Research Centre for Membranes and Water Security King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia

Clean water scarcity is an escalating global concern, necessitating the development of innovative membrane technologies. This mini review explores the multifaceted realm of membrane technology, a field increasingly engaging researchers and academics. polymeric membranes find application in diverse domains, spanning gas separation, packaging films, protective coatings, and crucially, water purification techniques like reverse osmosis and various filtration methods. This review predominantly focuses on pressure-driven membrane processes, a classification evolving in selectivity from nanofiltration to microfiltration. It further dissects these processes based on natural and synthetic polymeric membranes. Notably, this work delves into the pivotal role of polymeric membranes in heavy metal water purification, emphasizing the evolving landscape of membrane technologies. Three notable membrane types under scrutiny are Mixed Matrix Membranes, Thin Film Layer Membranes, and membranes incorporating polymer inclusions. Their versatility and applications in diverse sectors showcase the burgeoning potential of polymeric membranes. Furthermore, this review outlines the future applications of polymeric membranes, delineating their indispensable role in nanofiltration, microfiltration, ultrafiltration, and complexation-enhanced ultrafiltration. The compelling attributes of reverse osmosis, forward osmosis, and pervaporation in advancing water purification are also expounded upon. The review culminates by providing an insight into the structural intricacies of polymeric membranes, shedding light on their diverse applications and their pivotal role in addressing the global water crisis. The dynamic and evolving landscape of membrane technology underscores the crucial need for continued research and innovation in this domain to tackle water pollution and scarcity effectively. As we venture further into the 21st century, the multifaceted applications of polymeric membranes are set to

关键词： Heavy metals Membranes polymers Treatment Wastewater

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Ultra-Thin Hierarchical Porous Carbon Coated Metal Phosphide Self-Assembled Efficient Tri-Functional Electrodes for Overall Water Splitting and Rechargeable Zinc-Air Batteries

SSRN

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SSRN 2022年

作者： He, Rui Lu, Tuo Xu, Nengneng Liu, Guicheng Qiao, Jinli State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Environmental Science and Engineering Donghua University 2999 Ren’min North Road Shanghai201620 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China Hwarang-ro 14-gil 5 Seongbuk-gu Seoul02792 Korea Republic of Department of Physics Dongguk University Seoul04620 Korea Republic of

Highly efficient and stable trifunctional electrocatalysts with controllable nanostructures toward hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR) are extraordinarily important for the sustainable energy development. Here we report a general and facile synthetic method for designing a hierarchically porous Ni-foam-based self-supported electrode (NPO/NixPy@NF-HPCs). Based on its unique design concept, the NPO/NixPy@NF-HPCs shows high tri-functional catalytic activities. As a result, the NPO/NixPy@NF-HPCs-based rechargeable zinc-air battery (ZAB) and water splitting device exhibit high power density up to 377 mW cm-2 and low cell voltage of 1.52V@10 mA cm−2, respectively. Notably, the mapping between the stability and the quasi-in situ characterization demonstrates that it is a reliable method to improve electrode stability by establishing a stable outer carbon layer to avoid the oxidation of internally active sites. This work is promised to provide a viable new approach to developing efficient and low-cost carbon-supported phosphate tri-functional electrode. © 2022, The Authors. All rights reserved.

关键词： Nickel compounds

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