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High thermal stability Cu_(2)O@OZrP micro-nano hybrids for melt-spun excellent antibacterial activity polyester fibers

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Journal of Materials Science & Technology 2021年第22期81卷 58-66页

作者： Jialiang Zhou Yaping Wang Weinan Pan Hengxue Xiang Peng Li Zhe Zhou meifang zhu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai201620China Frontiers Science Center for Flexible Electronics Xi’an Institute of Flexible Electronics&Xi’an Institute of Biomedical Materials and EngineeringNorthwestern Polytechnical UniversityXi'an710072China

Public safety incidents caused by bacterial infections have attracted widespread attention towards antibacterial textiles(fibers,fabrics,etc.).Nevertheless,it is still challenging to efficiently load inorganic nano-antibacterial materials in polymer *** this work,zirconium phosphate(ZrP,layered micro-nano materials)was utilized as a micro-nano *** octadecyl triphenyl phosphonium bromide(OTP)was intercalated between the ZrP sheets by the ion exchange method to improve the carrier-polymer compatibility and the antibacterial *** in-situ chemical reduction,the ultra-small nano-sized cuprous oxide(Cu_(2)O<5 nm)was loaded on the outer surface of ZrP to realize the uniform and stable dispersion of the Cu_(2)O on the carrier and improve the antibacterial *** ZrP nanosheets loaded with Cu_(2)O and OTP(Cu_(2)O@OZrP)had excellent antibacterial properties,and the antibacterial rate against ***,*** and *** was more than 99%.The intercalation amount of OTP in Cu_(2)O@OZrP can reach 16%,and the thermal stability was excellent and a significant increase in the Zeta ***,the decomposition temperature was greater than 350℃,which was suitable for high-temperature melt processing of ***,we prepared PET/Cu_(2)O@OZrP fibers using polyethylene glycol terephthalate(PET),which accounts for 70%of the total chemical fibers,as the fiber ***/Cu_(2)O@OZrP fibers exhibited excellent mechanical property and antibacterial performance when the content of Cu_(2)O@OZrP was only 0.2%.The antibacterial rate against five types of bacteria including super bacteria(MRSA,VRE)was more than 99%.

关键词： Cu_(2)O@OZrP Hybrid material OTP Fibers Antibacterial

Molecular Motions in Polymer Matrix for Microenvironment Sensing

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Chemical Research in Chinese Universities 2021年第1期37卷 90-99页

作者： GAO Mengyue CHENG Yanhua ZHANG Junyan XU Chengjian YU Xiaoxiao zhu meifang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai201620P.R.China

Polymer science entails the structural study at multi-levels from nano-to micro-and mesoscale,which is highly important to transfer or even amplify the molecular information to macroscopic *** polymer structural transitions from lower-order to higher-order superstructures are normally involved to achieve selective,efficient and sophisticated ***,in-situ visualization of these processes is highly important,not only for fundamental understanding the structural evolution,but also for the optimization of the process flow during the materials *** imaging based on aggregation-induced emission(AIE)provides an ideal tool that offers a simple,accurate,and easy-readable method to fulfill the above *** to the twisted propeller-like structure of AIE luminogens(AIEgens),they show high fluorescence sensitivity to the surrounding microenvironment(e.g.,viscosity,rigidity,and polarity)through intramolecular *** this short review,we summarize the recent applications of AIEgens to serve as“built-in”sensors to analyze the process of polymerization,microphase separation,glass/vitrification transition,polymer solvation,crystallization,*** perspective on the future application of AIE technology in polymer engineering,especially fiber materials,is also discussed.

关键词： Aggregation-induced emission(AIE) Intramolecular motion Polymer structure Polymer microenvironment Visualization

Hollow multi-nanochannel carbon nanofiber/MoS_(2)nanoflower composites as binder-free lithium-ion battery anodes with high capacity and ultralong-cycle life at large current density

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Journal of Materials Science & Technology 2021年第18期77卷 169-177页

作者： Xuepeng Ni Zhe Cui Ning Jiang Huifang Chen Qilin Wu Anqi Ju meifang zhu College of Materials Science and Engineering&Shanghai Collaborative Innovation Center for High Performance Fiber Composites Donghua UniversityShanghai201620China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials.Donghua University Shanghai201620China Key Laboratory of High Performance Fibers&Products Ministry of EducationDonghua UniversityShanghai201620China

The electrode materials with high pseudocapacitance can enhance the rate capability and cycling stability of lithium-ion storage ***,we fabricated MoS_(2)nanoflowers with ultra-large interlayer spacing on N-doped hollow multi-nanochannel carbon nanofibers(F_(2)-MoS_(2)/NHMCFs)as freestanding binder-free anodes for lithium-ion batteries(LIBs).The ultra-large interlayer spacing(0.78~1.11 nm)of MoS_(2)nanoflowers can not only reduce the internal resistance,but also increase accessible active surface area,which ensures the fast Li+intercalation and *** NHMCFs with hollow and multi-nanochannel structure can accommodate the large internal strain and volume change during lithiation/delithiation process,it is beneficial to improving the cycling stability of *** from the above combined structure merits,the F_(2)-MoS_(2)/NHMCFs electrodes deliver a high rate capability 832 mA h g^(-1)at 10 A g^(-1)and ultralong cycling stability with 99.29 and 91.60%capacity retention at 10 A g^(-1)after 1000 and 2000 cycles,*** is one of the largest capacities and best cycling stability at10 A g^(-1)ever reported to date,indicating the freestanding F2-MoS_(2)/NHMCFs electrodes have potential applications in high power density LIBs.

关键词： Carbon nanofibers Electrospinning MoS_(2) Freestanding Lithium ion batteries

Electrospun Nanofibrous Composite Membranes for Separations

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Accounts of Materials Research 2023年第2期4卷 180-192页

作者： Zheyi Meng Liping zhu Xuefen Wang meifang zhu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Material Science and EngineeringDonghua UniversityShanghai 201620China

Electrospinning is regarded as an efficient method for directly and continuously fabricating *** electrospinning process is relatively simple and convenient to operate and can be used to prepare polymer nanofibers for almost all polymer solutions,melts,emulsions,and suspensions with sufficient *** addition,inorganic nanofibers can also be prepared via electrospinning by adding small amounts of polymers into the inorganic precursors,which are generally regarded as *** diameter of the electrospun nanofibers can be tuned from tens of nanometers to submicrons by changing the spinning *** nonwoven fabric stacked with electrospun fibers is a porous material with interconnected submicron pores,providing a porosity above 80%.However,limited by the unstable rheological properties of the electrospinning fluid,it is difficult to obtain nanofibers stably and continuously with an average diameter of<100 nm,which narrows the separation applications of the electrospun nanofibrous membranes to only microfiltration,air filtration,or use as membrane ***,to fully take advantage of electrospun nanofibrous membranes in other separation applications,electrospun nanofibrous composite(ENC)membranes were developed to improve and optimize their selectivity,permeability,and other separation *** composite membranes not only have all the advantages of single-layered or single-component membranes,but also have more flexibility in the choice of functional *** this account,we summarize the two combination strategies to design and fabricate ENC *** is based on the component combination,in which functional components are homogeneously or heterogeneously mixed in the fiber matrix or modified on the nanofiber *** other one is termed as the interfacial combination,in which functional skin layers are fabricated on the top of the electrospun membranes via interfacial deposition or interfacial polymerizat

关键词： composite separation fibers

Synthesis and characterization of an environmentally friendly PHBV/PEG copolymer network as a phase change material

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Science China Chemistry 2013年第6期56卷 716-723页

作者： XIANG HengXue WANG ShiChao WANG RenLin ZHOU Zhe PENG Cheng zhu meifang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua University

Novel environmentally friendly poly（hydroxybutyrate-co-hydroxyvalerate） and poly（ethylene glycol）（PHBV/PEG） copolymer networks were synthesized through free-radical solution polymerization with PHBV diacrylate （PHBVDA） and polyethylene glycol diacrylate （PEGDA） as macromers. The molecular structure of PHBV/PEG copolymer network was characterized by Fourier transform infrared （FT-IR） and 1H nuclear magnetic resonance （1H NMR）. The morphology of the PHBV/PEG co- polymer network was characterized by polarization optical microscopy. Thermal energy storage properties, thermal reliability and thermal stability were investigated by differential scanning calorimetry （DSC） and thermogravimetric analysis. The results indicated that the PHBV/PEG copolymer network hindered the growth of PEG crystalline segments or PHBV segments. PHBV/PEG copolymer network had a higher latent heat enthalpy, which didn＇t reduce with the components of PHBV in- creased. Moreover, PHBV/PEG copolymer network still had good thermal stability even at 300 ~C. These results suggested that such environmentally friendly copolymer network would have wide applications in phase change energy storage materials.

关键词： phase change material environmentally friendly energy storage material copolymer network PHBV PEG

Recent Progress of Graphene Fiber/Fabric Supercapacitors:From Building Block Architecture,Fiber Assembly,and Fabric Construction to Wearable Applications

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Advanced Fiber Materials 2023年第3期5卷 896-927页

作者： Tuxiang Guan Zemei Li Dianchun Qiu Guan Wu Jian Wu Liping zhu meifang zhu Ningzhong Bao State Key Laboratory of Materials‑Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 210009People’s Republic of China National Engineering Lab for Textile Fiber Materials and Processing Technology School of Materials Science and EngineeringZhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620People’s Republic of China

High-performance fiber-shaped power sources are anticipated to considerably contribute to the continuous development of smart wearable *** one-/two-dimensional(1D/2D)frameworks constructed from graphene sheets,graphene fibers and fabrics inherit the merits of graphene,including its lightweight nature,high electrical conductivity,and exceptional mechanical *** as-fabricated graphene fiber/fabric flexible supercapacitor(FSC)is,therefore,regarded as a promis-ing candidate for next-generation wearable energy storage devices owing to its high energy/power density,adequate safety,satisfactory flexibility,and extended cycle *** gap between practical applications and experimental demonstrations of FSC is drastically reduced as a result of technological *** this end,herein,recent advancements of FSCs in fiber element regulation,fiber/fabric construction,and practical applications are methodically reviewed and a forecast of their growth is presented.

关键词： Graphene fibers/fabrics Flexible supercapacitor Element regulation Fiber/fabric construction Wearable application

Lignin-based carbon fibers: Formation, modification and potential applications

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Green Energy & Environment 2022年第4期7卷 578-605页

作者： Shichao Wang Jixing Bai Mugaanire Tendo Innocent Qianqian Wang Hengxue Xiang Jianguo Tang meifang zhu Institute of Hybrid Materials College of Materials Science and EngineeringQingdao UniversityQingdao266071China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai201620China

As an aromatic polymer in nature, lignin has recently attracted gross attention because of its advantages of high carbon content, low cost and bio-renewability. However, most lignin is directly burnt for power generation to satisfy the energy demand of the pulp mills. As a result, only a handful of isolated lignin is used as a raw material. Thus, increasing value addition on lignin to expand its scope of applications is currently a challenge demanding immediate attention. Many efforts have been made in the valorization of lignin, including the preparation of precursors for carbon fibers. However, its complex structure and diversity significantly restrict the spinnability of lignin. In this review, we provide elaborate knowledge on the preparation of lignin-based carbon fibers ranging from the relationships among chemical structures, formation conditions and properties of fibers, to their potential applications. Specifically, control procedures for different spinning methods of lignin, including melt spinning, solution spinning and electrospinning, together with stabilization and carbonization are deeply discussed to provide an overall understanding towards the formation of lignin-based carbon fibers. We also offer perspectives on the challenges and new directions for future development of lignin-based carbon fibers.

关键词： Lignin-based carbon fiber Melt spinning Solution spinning Electrospinning

Fiber Changes Our Life

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Advanced Fiber Materials 2019年第1期1卷 1-2页

作者： meifang zhu Takeshi Kikutani Tianxi Liu Seeram Ramakrishna Guangming Tao State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua University2999 North RenminRoadSongjiang DistrictShanghai 201620China Department of Materials Science and Engineering Tokyo Institute of Technology2-12-1OokayamaMeguro-kuTokyo 152-8550Japan Centre for Nanofibers and Nanotechnology National University of Singapore3 Science Drive 3Singapore 117543Singapore Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information Huazhong University of Science and TechnologyLuoyu Road 1037Wuhan 430074China

It is with great enthusiasm that we introduce the inaugural issue of Advanced Fiber Materials,a peer-reviewed,inter-national and interdisciplinary research journal published by Springer Nature *** aim is to provide a framework for research focused on fiber and Fiber-related *** are synonymous with the history of *** textiles from natural fibers such as cotton,hemp,linen,silk and wool have been used by the earlier humans in almost all world *** on,chemical fibers,nano-fibers,functional fibers,and fiber-derived devices emerged.

关键词： fibers wool fiber

One-step floating conversion of biomass into highly graphitized and continuous carbon nanotube yarns

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Green Energy & Environment 2023年第6期8卷 1711-1718页

作者： Gongxun Zhai Qianqian Wang Fuyao Liu Zexu Hu Chao Jia Dengxin Li Hengxue Xiang meifang zhu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai201620China

The rapid growth of the demand for carbon nanotubes(CNTs) has greatly promoted their large-scale synthesis and development. However,the continuous production of CNT fibers by floating catalyst chemical vapor deposition(FCCVD) requires a large amount of non-renewable carbon sources. Here, the continuous production of highly graphitized CNT yarns from biomass tannic acid(TA) is reported. The chelation of TA and catalyst promotes the rapid cracking of biomass into carbon source gas, and the pyrolysis cracking produces the reducing gas, which solves the problems of the continuous production of CNT yarns using biomass. Through simple twisting, the mechanical strength of CNT yarn can reach 886 ± 46 MPa, and the electrical conductivity and graphitization(IG/ID) can reach 2 × 10^(5)S m^(-1)and 6.3, respectively. This work presents a promising solution for the continuous preparation of CNT yarns based on green raw material.

关键词： Carbon nanotube Tannic acid Biomass Pyrolysis Floating catalyst chemical vapor deposition