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Preparation and Performance of HGM/PPENK-based High Temperature-resistant Thermal Insulating Coatings

Chinese Journal of polymer science 2021年第6期39卷 770-778,I0008页

作者： Lei Song Li-Shuai Zong Jin-Yan Wang Xi-Gao Jian State Key Laboratory of Fine Chemicals Department of Polymer Science and MaterialsSchool of Chemical EngineeringDalian University of TechnologyDalian 116024China

Novel high temperature-resistant coatings with high mechanical strength and thermal-insulating performance were prepared with poly(ether nitrile ketone)(PPENK)resin as matrix and hollow glass microspheres(HGMs)as thermal-insulating *** corresponding mechanical and thermal-insulating study indicated that the mechanical properties of the coatings decreased with the increase of HGM content,and were improved after surface modification of HGM by KH570 resulting in enhancement of interaction between HGM and PPENK *** thermal conductivity of HGM/PPENK thermal-insulating coating decreased with the increase of HGM content and coating thickness,along with the decrease of the true *** also showed slight increase trend due to HGMs surface *** HGM/PPENK coating filled with modified HGMs showed better thermal resistance than that of unmodified HGM/PPENK *** thermal decomposition temperature at 5%weight loss of the coating containing modified HGMs was 10°C lower than that of pure PPENK,and 40°C higher than that of neat HGM/PPENK *** coating exhibited commendable appearance after 400°C for 30 *** merits of HGM/PPENK-based thermal coatings obviously demonstrated promising prospect in thermal protection fields.

关键词： Coatings Temperature-resistant HGM/PPENK Thermal conductivity Mechanical properties

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Building the Third Dimension: Microstructure and Mechanics of Additive Manufactured Continuous Aramid Fiber/PETG Composites with Variable Fiber Content Through In-nozzle Impregnation

Building the Third Dimension: Microstructure and Mechanics o...

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Fiber Society 2022 Spring Conference - Fibers for a Greener Society: From Fundamentals to Advanced Applications

作者： Rijckaert, Sander Daelemans, Lode Van Paepegem, Wim Cardon, Ludwig De Clerck, Karen Centre for Textile Science and Engineering Department of Materials Textiles and Chemical Engineering Ghent University Belgium Mechanics of Materials and Structures Department of Materials Textiles and Chemical Engineering Ghent University Belgium Centre for Polymer and Material Technologies Department of Materials Textiles and Chemical Engineering Ghent University Belgium

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Unleashing the Power of Bio-based Thermotropic Liquid Crystal Modifiers:Toughening and Reinforcing Petroleum-based Epoxy Resin without Compromising Other Properties

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Chinese Journal of polymer science 2024年第8期42卷 1093-1102页

作者： Qing-Yun Lu Hong-Wei Gu Jia-Hui Li Qian-Qian Fan Bei-Tao Liu Yan Kou Xi-Gao Jian Zhi-Huan Weng State Key Laboratory of Fine Chemicals Frontiers Science Center for Smart MaterialsLiaoning Technology Innovation Center of High Performance Resin MaterialsDepartment of Polymer Science&EngineeringDalian University of TechnologyDalian 116024China Thermochemistry Laboratory Liaoning Province Key Laboratory of Thermochemistry for Energy and MaterialsDalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China

Toughening the petroleum-based epoxy resin blends with bio-based modifiers without compromising their modulus,mechanical strength,and other properties is still a big challenge in view of the *** this study,a bio-based liquid crystal epoxy resin(THMT-E P)with an s-triazine ring structure was utilized to modify a petroleum-based bisphenol A epoxy resin(E51)with 4,4'-diaminodiphenylsulfone(DDS)as a curing agent,and the blended systems were evaluated for their thermal stability,mechanical properties,and flame *** results showed that the impact strength of the blended system initially increased and then decreased with the increase in THMT-EP content,and it reached the a maximum value of 26.5 kJ/m^(2)when the THMT-EP content was 5%,which was 31.2%higher than that of E51/***,the flexural strength,modulus,and glass transition tem perature of the blended system were all simultaneously improved with the addition of *** the same time,the addition of THMT-EP enhanced the flame retardancy of the system by increasing the char yield at 700℃and decreasing the peak heat release rate and total heat release *** work paves the way for a more sustainable improvement in the comprehensive performance of epoxy resin.

关键词： Epoxy resin Toughening Bio-based Thermotropic liquid crystal

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One-pot synthesis of concentration and excitation dual-dependency truly full-color photoluminescence carbon dots

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Chinese chemical Letters 2022年第8期33卷 4116-4120页

作者： Chen Wei Shun Hu Fuxin Liang Zhining Song Xue Liu Institute of Clean Energy Chemistry Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced MaterialsCollege of ChemistryLiaoning UniversityShenyang 110036China Institute of Polymer Science and Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

The paper describes a kind of truly full-color photoluminescence(PL)*** CDs were prepared by using one-pot hydrothermally heating citric acid and formamide at 200℃ for 2 *** CDs have three fluorescent centers at blue,green,and red light *** color was regulated through two means,including changing excitation wavelengths or CDs *** emission maxima changed from blue to red with the increase of excitation wavelengths or CDs *** full-color PL behavior of the CDs was inherited and conserved in the solid polymer matrix,giving multicolor CDs/polymer films and light emitting diodes(LEDs).White-light LED(WLED)with the CIE coordinate approaching to(0.31,0.32)were also achieved.

关键词： Carbon dots Full-color Fluorescent centers Concentration and excitation White-light LEDs

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Nanomaterial‑Based Repurposing of Macrophage Metabolism and Its Applications

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Nano-Micro Letters 2024年第11期16卷 494-528页

作者： Tingting Meng Danfeng He Zhuolei Han Rong Shi Yuhan Wang Bibo Ren Cheng Zhang Zhengwei Mao Gaoxing Luo Jun Den Institute of Burn Research Southwest HospitalState Key Laboratory of Trauma and Chemical PoisoningArmy Medical UniversityChongqing 400038People’s Republic of China Department of Breast Surgery Gansu Provincial HospitalLanzhouGansu 730030People’s Republic of China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China

Macrophage immunotherapy represents an emerging therapeutic approach aimed at modulating the immune response to alleviate disease ***(NMs)have been engineered to monitor macrophage metabolism,enabling the evaluation of disease progression and the replication of intricate physiological signal *** achieve this either directly or by delivering regulatory signals,thereby mapping phenotype to effector functions through metabolic repurposing to customize macrophage fate for ***,a comprehensive summary regarding NM-mediated macrophage visualization and coordinated metabolic rewiring to maintain phenotypic equilibrium is currently *** review aims to address this gap by outlining recent advancements in NM-based metabolic *** initially explore the relationship between metabolism,polarization,and disease,before delving into recent NM innovations that visualize macrophage activity to elucidate disease onset and fine-tune its fate through metabolic remodeling for macrophage-centered ***,we discuss the prospects and challenges of NM-mediated metabolic immunotherapy,aiming to accelerate clinical *** anticipate that this review will serve as a valuable reference for researchers seeking to leverage novel metabolic intervention-matched immunomodulators in macrophages or other fields of immune engineering.

关键词： Immunomodulatory nanomaterial Macrophage polarization Macrophage metabolic reprogramming Immune engineering

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What Can Topology Bring to Chemistry?

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CCS Chemistry 2024年第9期6卷 2084-2109页

作者： Wei Wang Songtao Zhou Xiujun Yu Qing-Hui Guo Yanhang Ma Jie Song Liang Zhang Xuzhou Yan Lu Han Qing Liao Xiaopeng Li Wen-Bin Zhang Yiyong Mai Shaodong Zhang Shunai Che Hai-Bo Yang Xuefeng Fu Mei-Xiang Wang School of Chemistry and Molecular Engineering East China Normal UniversityShanghai 200062 Hangzhou Institute of Medicine Chinese Academy of SciencesHangzhou 310022Zhejiang College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060Guangdong MOE Key Laboratory of Bioorganic Phosphorous and Chemical Biology Department of ChemistryTsinghua UniversityBeijing 100084 School of Physical Science and Technology and Shanghai Key Laboratory of High-Resolution Electron Microscopy ShanghaiTech UniversityShanghai 201210 School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesState Key Laboratory of Composite MaterialsShanghai Key Laboratory for Molecular Engineering of Chiral DrugsShanghai Jiao Tong UniversityShanghai 200240 School of Chemical Science and Engineering Tongji UniversityShanghai 200092 Beijing Key Laboratory for Optical Materials and Photonic Devices Department of ChemistryCapital Normal UniversityBeijing 100048 Beijing National Laboratory for Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCenter for Soft Matter Science and EngineeringCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871 Department of Chemical Sciences National Natural Science Foundation of ChinaBeijing 10085

The unique mathematical perspectives and principal concepts of topology have not only promoted the development of other branches of mathematics but have also deeply influenced other subjects,particularly physics and *** minireview aims to elucidate the substantial influence of topology on chemistry by critically examining both the contributions of topology to current chemical science and its potential future *** will discuss the topology of molecular structures and assemblies across various scales—from small molecules and mechanically interlocked molecules to polymers,biomacromolecules,and supramolecular *** discussion will include an exploration of cutting-edge techniques for characterizing topological features,underscoring the role of topology as a novel paradigm for the design and synthesis of new molecular ***,a critical analysis of topology’s role in the development of functional materials—such as photonic materials,polymers,biomacromolecules,and chiral materials—will demonstrate its emerging significance as a crucial parameter in unveiling novel properties and *** topology’s formidable potential,it is anticipated to be used increasingly to address pivotal challenges within chemistry and adjacent disciplines.

关键词： chemical topology topological invariants molecular graphs links and knots structureproperty relationship

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Graphene-functionalized textile composites for wearable Joule heating applications

Advanced Nanocomposites

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Advanced Nanocomposites 2025年 2卷 108-123页

作者： Omar Faruk Abbas Ahmed Ashfaqul Hoque Khadem Lu Jia Luyi Sun Department of Materials Science and Engineering Binghamton University State University of New York at Binghamton NY 13902 USA Polymer Program Institute of Materials Science and Department of Chemical & Biomolecular Engineering University of Connecticut Storrs CT 06269 USA Department Mechanical Engineering College of Engineering Computing and Applied Science Clemson University Clemson SC 29634 USA College of Textile Engineering Taiyuan University of Technology Jinzhong Shanxi 030600 China

Thermal comfort is essential for maintaining physiological well-being, with textile materials traditionally serving as the primary medium for regulating heat exchange between the body and its environment. However, conventional textiles often fall short of maintaining optimal thermal balance. So, there is an increasing demand for advanced thermoregulation systems that can effectively reduce heat loss and enhance warmth, ensuring consistent comfort. Recent research has highlighted the promise of advanced functional materials, especially graphene and its composites, for modifying textiles to improve thermal properties. This article comprehensively reviews recent advancements in graphene-functionalized textile composites, focusing on their applications in wearable Joule heaters designed for personalized thermal comfort or thermal therapy. Various graphene-functionalized textile composites are reviewed from the perspectives of material properties, processing strategies and device fabrication methods. Key challenges and future opportunities are summarized for graphene-functionalized textile-based Joule heaters as innovative solutions in wearable thermal regulation.

关键词： Graphene Textile Composite Wearable electronics Joule heater

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Breathable,antifreezing,mechanically skin-like hydrogel textile wound dressings with dual antibacterial mechanisms

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Bioactive Materials 2023年第3期21卷 313-323页

作者： Sihan Jiang Jiajia Deng Yuhui Jin Bo Qian Wanqi Lv Qiangqiang Zhou Enhua Mei Rasoul Esmaeely Neisiany Yuehua Liu Zhengwei You Jie Pan Department of Orthodontics Shanghai Stomatological Hospital&School of StomatologyFudan UniversityShanghai200001PR China Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases Fudan UniversityShanghai200001PR China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringInstitute of Functional MaterialsResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society)Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineDonghua UniversityShanghai201620PR China Department of Endodontics Shanghai Stomatological Hospital&School of StomatologyFudan UniversityShanghai200001PR China Department of Materials and Polymer Engineering Faculty of EngineeringHakim Sabzevari UniversitySabzevar***Iran

Hydrogels are emerging as the most promising dressings due to their excellent biocompatibility,extracellular matrix mimicking structure,and drug loading ***,existing hydrogel dressings exhibit limited breathability,poor environmental adaptability,potential drug resistance,and limited drug options,which extremely restrict their therapeutic effect and working ***,the current research introduces the first paradigm of hydrogel textile dressings based on novel gelatin glycerin hydrogel(glyhydrogel)fibers fabricated by the Hofmeister effect based wet *** from the unique knitted structure,the textile dressing features excellent breathability(1800 times that of the commercially available 3 M dressing)and stretchability(535.51±38.66%).Furthermore,the glyhydrogel textile dressing can also withstand the extreme temperature of-80℃,showing the potential for application in subzero ***,the introduction of glycerin endows the textile dressing with remarkable antibacterial property and expands the selection of loaded drugs(e.g.,clindamycin).The prepared glyhydrogel textile dressing shows an excellent infected wound healing effect with a complete rat skin closure within 14 *** these functions have not been achievable by traditional hydrogel dressings and provide a new approach for the development of hydrogel dressings.

关键词： Hydrogel textile Hydrogel dressing Breathable Dual antibacterial Skin regeneration

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Effect of Gd, V, and y Alloying on the Corrosion Properties of Fe-Mn-Ni-Al Fe-based Shape Memory Alloy

Effect of Gd, V, and y Alloying on the Corrosion Properties ...

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2023 Sharjah International Conference on Physics of Advanced Materials, SICPAM 2023

作者： Mustafa, Faisal Ahmad, Shahbaz Hassan, Arhum Egilmez, Mehmet El-Khatib, Sami Ibrahim, Taleb Department of Physics American University of Sharjah Sharjah26666 United Arab Emirates Materials Science and Engineering Program American University of Sharjah Sharjah26666 United Arab Emirates Department of Chemical Engineering American University of Sharjah Sharjah26666 United Arab Emirates

Shape Memory Alloys (SMA) are widely utilized in numerous industrial applications nowadays. Significant attention has been given to Fe-based SMA in civil engineering applications due to their high strength and reasonable cost. Researchers are striving to improve the corrosion resistance of these alloys so they can be utilized in marine environments. This article focuses on the effect of Gd, V, and Y alloying on FeMnNiAl based SMA. The phases and morphological effects were characterized using X-Ray diffractometer (XRD), Scanning Electron Microscopy (SEM), and Energy Dispersive Spectroscopy (EDS). To examine the corrosive nature of the Fe-based SMA system, a potentiodynamic analysis and electrochemical impedance spectroscopy (EIS) tests were performed in 3.5% NaCl solution. Results show that the addition of Gd rare earth metal has improved the overall corrosion efficiency of Fe-based SMAs by 48%. © Published under licence by IOP Publishing Ltd.

关键词： Scanning electron microscopy

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Enabling rechargeable Li-MnO_(2) batteries using ether electrolytes

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SmartMat 2023年第5期4卷 131-138页

作者： Dawei Xia Hongpeng Gao Mingqian Li John Holoubek Qizhang Yan Yijie Yin Panpan Xu Zheng Chen Department of NanoEngineering University of California San DiegoLa JollaCaliforniaUSA Program of Materials Science and Engineering University of California San DiegoLa JollaCaliforniaUSA Program of Chemical Engineering University of California San DiegoLa JollaCaliforniaUSA Sustainable Power and Energy Center University of California San DiegoLa JollaCaliforniaUSA

A low-carbon future demands more affordable batteries utilizing abundant elements with sustainable end-of-life battery *** the economic and environmental advantages of Li-MnO_(2)batteries,their applica-tion so far has been largely constrained to primary ***,we demonstrate that one of the major limiting factors preventing the stable cycling of Li-MnO_(2)batteries,Mn dissolution,can be effectively mitigated by employing a common ether electrolyte,1 mol/L lithium bis(trifluorometha-nesulfonyl)imide(LiTFSI)in 1,3-dioxane(DOL)/1,2-dimethoxyethane(DME).We discover that the suppression of this dissolution enables highly reversible cycling of the MnO_(2)cathode regardless of the synthesized phase and ***,we find that both the LiPF_(6)salt and carbonate solvents present in conventional electrolytes are responsible for previous cycling *** ether electrolyte,paired with MnO_(2)cathodes is able to demonstrate stable cycling performance at various rates,even at elevated temperature such as 60℃.Our discovery not only represents a defining step in Li-MnO_(2)batteries with extended life but provides design criteria of electrolytes for vast manganese-based cathodes in rechargeable batteries.

关键词： ether-based electrolytes Li-MnO batteries Mn deposition Mn dissolution reuse of primary batteries

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