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| 1 | Synthesis and characterization of an environmentally friendly PHBV/PEG copolymer network as a phase change material显示文摘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 1 H nuclear magnetic resonance ( 1 H NMR). The morphology of the PHBV/PEG copolymer 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 increased. Moreover, PHBV/PEG copolymer network still had good thermal stability even at 300 ℃. These results suggested that such environmentally friendly copolymer network would have wide applications in phase change energy storage materials. | XIANG HengXue WANG ShiChao WANG RenLin ZHOU Zhe PENG Cheng ZHU MeiFang | 2013 | Science China Chemistry2013，56，6： | 18 |
| 2 | Enhanced flame-retardant performance of poly(lactic acid)(PLA) composite by using intrinsically phosphorus-containing PLA显示文摘The intrinsically phosphorous-containing flame-retardant poly(lactic acid)(P-PLA) was synthesized through the chain extension of L-lactide and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide(DOPO) derivative, then P-PLA was melt blended with neat PLA to produce flame-retardant PLA composite(FR-PLA). The flame-retardant properties of FR-PLAs were investigated by Limiting Oxygen Index(LOI), UL-94, and Cone Calorimeter Tests, the results indicated that the flame-retardant properties of PLA composites were significantly improved with the addition of P-PLA due to its excellent ability to carbonize and dilute combustible gases. The LOI value of FRPLA10 composite(consisting of 90 wt% neat PLA and 10 wt% P-PLA) increased from 20.5 to 27.8 and UL-94 rating reached up to V-1, the peak heat release rate and total heat release of FR-PLA composite were lower than those of neat PLA. The flame-retardant mechanism of FR-PLA depended on both condensed and gaseous phases,which was confirmed by the FTIR, Raman and TG-FTIR. Besides, the tensile strength of FR-PLA10 slightly decreased from 72.4 to 61.8 MPa, which met the requirements of most practical applications. Therefore, the modification method used in this work presented a feasible approach to prepare FR-PLA composite with satisfactory mechanical property. | Senlong Yu Hengxue Xiang Jialiang Zhou Meifang Zhu | 2018 | Progress in Natural Science:Materials International2018，28，5： | 8 |
| 3 | Intriguing anti-superbug Cu2O@ZrP hybrid nanosheet with enhanced antibacterial performance and weak cytotoxicity显示文摘In view of it's strong antibacterial function and minor toxicity,cuprous oxide (Cu2O) is frequently used in various broad-spectrum antibacterial reagents.Nonetheless the undesirable effects of superbugs still remain challenging.In this research,a chemical deposition approach is used to prepare a Cu2O@ZrP composite with nanosheet configuration demonstrating excellent dispersibility and antibacterial traits.From systematic analysis,it was inffered that the content of copper in the nanosheet was about 57-188 mg/g while the average thickness of the nanosheets Cu2O formed on ZrP is approximately 0.8 nm.The results of the minimal inhibitory concentration (MIC) revealed that an extremely low loading of Cu2O in Cu2O@ZrP nanosheet can lead to exceptional antibacterial activity.Examined on two various superbugs;i.e.methicillin-resistant staphylococcus aureus (MRSA) and vancomycin-resistant enterococcus (VRE),the composite nanosheet reagent performed over 99% microbial reduction.More intesetingly,the cell growth rate of the Cu2O@ZrP nanosheet was determined to be 20% lower than that of the neat Cu2O,manifesting a weaker cytotoxicity.This unique hybrid nanosheet with intriguing anti-superbug performance promises highly efficient protection for the fabrics,battledress,and medical textiles. | Jialiang Zhou Hengxue Xiang Fatemeh Zabihi Senlong Yu Bin Sun Meifang Zhu | 2019 | Nano Research2019，12，6： | 7 |
| 4 | Flame retardancy of polyamide 6 hybrid fibers:Combined effects of α-zirconium phosphate and ammonium sulfamate显示文摘Synergistic effect between α-zirconium phosphate(α-ZrP) and ammonium sulfamate(AS) for enhanced flame retardant properties of Polyamide 6(PA6) was investigated by using oxygen index instrument,cone calorimeter,thermogravimetric analyzer(TGA),Instron universal test machine and scanning electron microscopy(SEM).PA6/AS/α-ZrP ternary hybrid materials with various contents of α-ZrP and AS were fabricated by melt-mixing method.The result from flammabihty indicated that the Limiting oxygen index(LOI) and Underwriters Laboratories-94(UL-94) rating of PA6/AS/α-ZrP were significantly accelerated under the coordinating function of α-ZrP and AS.Moreover,the thermal stability for PA6/AS/α-ZrP studied by TGA also demonstrated this synergistic effect between α-ZrP and AS on the heat resistance.The effects of the usage amount of α-ZrP and AS on mechanical properties were analyzed by using uniaxial tensile test.It was found that the addition of AS provided negative effects on the tensile strength of PA6/AS/α-ZrP,however,the adverse trends that mentioned above could be overcome by using the well dispersed α-ZrP. | Hengxue Xiang Lili Li Wei Chen Senlong Yu Bin Sun Meifang Zhu | 2017 | Progress in Natural Science:Materials International2017，27，3： | 7 |
| 5 | Lignin-based carbon fibers: Formation, modification and potential applications显示文摘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. | Shichao Wang Jixing Bai Mugaanire Tendo Innocent Qianqian Wang Hengxue Xiang Jianguo Tang Meifang Zhu | 2022 | Green Energy & Environment2022，7，4： | 5 |
| 6 | Effective and biocompatible antibacterial surfaces via facile synthesis and surface modification of peptide polymers显示文摘It is an urgent need to tackle drug-resistance microbial infections that are associated with implantable biomedical devices.Host defense peptide-mimicking polymers have been actively explored in recent years to fight against drug-resistant microbes.Our recent report on lithium hexamethyldisilazide-initiated superfast polymerization on amino acid N-carboxyanhydrides enables the quick synthesis of host defense peptide-mimicking peptide polymers.Here we reported a facile and cost-effective thermoplastic polyurethane(TPU)surface modification of peptide polymer(DLL:BLG=90:10)using plasma surface activation and substitution reaction between thiol and bromide groups.The peptide polymer-modified TPU surfaces exhibited board-spectrum antibacterial property as well as effective contact-killing ability in vitro.Furthermore,the peptide polymer-modified TPU surfaces showed excellent biocompatibility,displaying no hemolysis and cytotoxicity.In vivo study using methicillin-resistant Staphylococcus aureus(MRSA)for subcutaneous implantation infectious model showed that peptide polymer-modified TPU surfaces revealed obvious suppression of infection and great histocompatibility,compared to bare TPU surfaces.We further explored the antimicrobial mechanism of the peptide polymer-modified TPU surfaces,which revealed a surface contact-killing mechanism by disrupting the bacterial membrane.These results demonstrated great potential of the peptide-modified TPU surfaces for practical application to combat bacterial infections that are associated with implantable materials and devices. | Ziyi Lu Yueming Wu Zihao Cong Yuxin Qian Xue Wu Ning Shao Zhongqian Qiao Haodong Zhang Yunrui She Kang Chen Hengxue Xiang Bin Sun Qian Yu Yuan Yuan Haodong Lin Meifang Zhu Runhui Liu | 2021 | Bioactive Materials2021，6，12： | 5 |
| 7 | High thermal stability Cu_(2)O@OZrP micro-nano hybrids for melt-spun excellent antibacterial activity polyester fibers显示文摘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 fibers.In this work,zirconium phosphate(ZrP,layered micro-nano materials)was utilized as a micro-nano carrier.The 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 performance.Through 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 performance.The ZrP nanosheets loaded with Cu_(2)O and OTP(Cu_(2)O@OZrP)had excellent antibacterial properties,and the antibacterial rate against E.coli,S.aureus and C.albicans 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 potential.Indeed,the decomposition temperature was greater than 350℃,which was suitable for high-temperature melt processing of polymers.Consequently,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 matrix.PET/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%. | Jialiang Zhou Yaping Wang Weinan Pan Hengxue Xiang Peng Li Zhe Zhou Meifang Zhu | 2021 | Journal of Materials Science & Technology2021，，22： | 4 |
| 8 | Solid-state intramolecular motions in continuous fibers driven by ambient humidity for fluorescent sensors显示文摘One striking feature of molecular rotors is their ability to change conformation with detectable optical signals through molecular motion when stimulated.However,due to the strong intermolecular interactions,synthetic molecular rotors have often relied on fluid environments.Here,we take advantage of the solid-state intramolecular motion of aggregation-induced emission(AIE)molecular rotors and one-dimensional fibers,developing highly sensitive optical fiber sensors that respond to ambient humidity rapidly and reversibly with observable chromatic fluorescence change.Moisture environments induce the swelling of the polymer fibers,activating intramolecular motions of AIE molecules to result in red-shifted fluorescence and linear response to ambient humidity.In this case,polymer fiber provides a process-friendly architecture and a physically tunable medium for the embedded AIE molecules to manipulate their fluorescence response characteristics.Assembly of sensor fibers could be built into hierarchical structures,which are adaptive to diverse-configuration for spatial-temporal humidity mapping,and suitable for device integration to build light-emitting sensors as well as touchless positioning interfaces for intelligence systems. | Yunmeng Jiang Yanhua Cheng Shunjie Liu Haoke Zhang Xiaoyan Zheng Ming Chen Michidmaa Khorloo Hengxue Xiang Ben Zhong Tang Meifang Zhu | 2021 | National Science Review2021，8，4： | 3 |
| 9 | Shape-stabilized phase change materials with high phase change enthalpy based on synthetic comb-like poly(acrylonitrile-co-ethylene glycol)for thermal management显示文摘Shape-stabilized poly(acrylonitrile-co-ethylene glycol)(PANEG) copolymer with comb-like structure was prepared via simple free-radical solution polymerization, where acrylic acid poly(ethylene glycol) methyl ether ester(MPEGA) and acrylonitrile(AN) were employed as monomers. Fourier transform infrared spectroscopy(FTIR), 1 H and 13 C nuclear magnetic resonance spectroscopy(1 H and 13 C NMR), wide-angle X-ray diffraction(WXAD) were used to characterize the chemical structure of resultant PANEG. In addition, the influences of MPEGA contents on energy storage performance, thermal reliability and thermal stability of PANEG materials were evaluated based on differential scanning calorimetry(DSC), polarizing optical microscopy(POM), thermal infrared imager and thermogravimetry analyzer(TG). The comb-like PANEG demonstrated a favorable temperature regulation performance and thermal reliability. With the increase of MPEGA contents, the enthalpy of PANEG increased, and when the content of MPEGA was 80 wt%, the phase change enthalpy of synthesized PANEG-80 reached to 106.70 J/g with a stable heat storage performance after 100 thermal cycling. Thermal infrared images and cooling curves revealed that synthetic PANEG could sustain a temperature in ranges of 22–31 °C for continuous 25 min, presenting excellent temperature regulation performance. Also, comb-like PANEG could be uniformly dissolved in dimethyl sulfoxide(DMSO),indicating that PANEG phase change fibers with potential applications in fields of intelligent thermoregulating textile and heat energy management could be obtained via one-step wet spinning. | Wei Chen Hengxue Xiang Yunmeng Jiang Sayed Yaseen Rashdi Meifang Zhu | 2017 | Science China Chemistry2017，60，11： | 3 |
| 10 | Flexible Ceramic Fibers: Recent Development in Preparation and Application显示文摘Flexible ceramic fibers(FCFs)have been developed for various advanced applications due to their superior mechanical flexibility,high temperature resistance,and excellent chemical stability.In this article,we present an overview on the recent progress of FCFs in terms of materials,fabrication methods,and applications.We begin with a brief introduction to FCFs and the materials for preparation of FCFs.After that,various methods for preparation of FCFs are discussed,including centrifugal spinning,electrospinning,solution blow spinning,self-assembly,chemical vapor deposition,atomic layer deposition,and polymer conversion.Recent applications of FCFs in various fields are further illustrated in detail,including thermal insulation,air filtration,water treatment,sound absorption,electromagnetic wave absorption,battery separator,catalytic application,among others.Finally,some perspectives on the future directions and opportunities for the preparation and application of FCFs are highlighted.We envision that this review will provide readers with some meaningful guidance on the preparation of FCFs and inspire them to explore more potential applications. | Chao Jia Zhe Xu Dianfeng Luo Hengxue Xiang Meifang Zhu | 2022 | Advanced Fiber Materials2022，4，4： | 1 |
| 11 | Preparation and performance of the hydrolyzate of waste polyacrylonitrile fiber/poly (ethylene glycol) graft copolymerization 显示文摘 | Guo Jing Xiang Hengxue Gong Xueyong | 2011 | Energy Sources: Part A2011，33，11： | 1 |
| 12 | Preparation and properties of form-stable phase change materials polyacry- lonitrile fiber/stearic acid blends显示文摘 | Guo Jing Xiang Hengxue Wang Qianqian | 2011 | Advanced Materials Re- search2011，，197198： | 1 |
| 13 | Synthesis and Characterization of Comb‐like P(MPEGA‐ co ‐AM) Copolymer as Phase Change Materials显示文摘 | Hengxue Xiang Shaohua Chen Shichao Wang Cheng Peng Meifang Zhu | 2012 | Chin. J. Chem2012，，9： | 1 |
| 14 | One-step floating conversion of biomass into highly graphitized and continuous carbon nanotube yarns显示文摘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. | Gongxun Zhai Qianqian Wang Fuyao Liu Zexu Hu Chao Jia Dengxin Li Hengxue Xiang Meifang Zhu | 2023 | Green Energy & Environment2023，8，6： | 0 |
| 15 | Thermal depolymerization mechanisms of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)显示文摘Thermal degradation processes and decomposition mechanisms of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)(PHBV) were investigated by using thermal gravity analysis(TGA), Gel permeation chromatography(GPC), elemental analyzer, pyrolysis-gas chromatography-mass spectrometry(Py GC-MS) and ~1H nuclear magnetic resonance(~1H NMR). The degradation activation energy was calculated via the dependence of residual mass on isothermal temperature.~1H NMR and Py GC-MS were used to investigate the chemical structure and component proportion of volatile gases and degradation residues which were produced by thermal decomposition, and to infer the process of macromolecular chain scission. Besides, the influence of the factors, such as outfield atmosphere, residual metal ions, on the degradation behaviors of PHBV was also studied. Finally, the PHBV thermal decomposition mechanisms were speculated on the basis of the degradation behaviors of molecular and chemical structure. | Hengxue Xiang Xiaoshuang Wen Xiaohui Miu Yan Li Zhe Zhou Meifang Zhu | 2016 | Progress in Natural Science:Materials International2016，26，1： | 0 |
| 16 | CHCHD2 maintains mitochondrial contact site and cristae organizing system stability and protects against mitochondrial dysfunction in an experimental model of Parkinson’s disease显示文摘Background:Parkinson’s disease(PD)is the second most common neurodegenerative disease after Alzheimer’s dementia.Mitochondrial dysfunction is involved in the pathology of PD.Coiled-coil-helix-coiled-coil-helix domain-containing 2(CHCHD2)was identified as associated with autosomal dominant PD.However,the mechanism of CHCHD2 in PD remains unclear.Methods:Short hairpin RNA(ShRNA)-mediated CHCHD2 knockdown or lentivirus-mediated CHCHD2 overexpression was performed to investigate the impact of CHCHD2 on mitochondrial morphology and function in neuronal tumor cell lines represented with human neuroblastoma(SHSY5Y)and HeLa cells.Blue-native polyacrylamide gel electrophoresis(PAGE)and two-dimensional sodium dodecyl sulfate-PAGE analysis were used to illustrate the role of CHCHD2 in mitochondrial contact site and cristae organizing system(MICOS).Co-immunoprecipitation and immunoblotting were used to address the interaction between CHCHD2 and Mic10.Serotype injection of adeno-associated vector-mediated CHCHD2 and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine(MPTP)administration were used to examine the influence of CHCHD2 in vivo.Results:We found that the overexpression of CHCHD2 can protect against methyl-4-phenylpyridinium(MPP+)-induced mitochondrial dysfunction and inhibit the loss of dopaminergic neurons in the MPTP-induced mouse model.Furthermore,we identified that CHCHD2 interacted with Mic10,and overexpression of CHCHD2 can protect against MPP+-induced MICOS impairment,while knockdown of CHCHD2 impaired the stability of MICOS.Conclusion:This study indicated that CHCHD2 could interact with Mic10 and maintain the stability of the MICOS complex,which contributes to protecting mitochondrial function in PD. | Lin Lu Hengxu Mao Miaomiao Zhou Yuwan Lin Wei Dai Jiewen Qiu Yousheng Xiao Mingshu Mo Xiaoqin Zhu Zhuohua Wu Zhong Pei Wenyuan Guo Pingyi Xu Xiang Chen | 2022 | Chinese Medical Journal2022，，13： | 0 |
| 17 | Ultra-fast bacterial inactivation of Cu_(2)O@halloysite nanotubes hybrids with charge adsorption and physical piercing ability for medical protective fabrics显示文摘Metals have been used for wound treatment and toxicity testing since ancient times.With the development of nanotechnology,metal oxides have been proven to have excellent sterilization and disinfection functions.However,the rapid bacterial inactivation efficiency and trapping physicochemical killing ability remain simultaneously undemonstrated in antibacterial nanohybrids.Here,we demonstrate a method for in-situ reduction of small-sized Cu_(2)O particles on one-dimensional inorganic halloysite nanotubes(HNTs).The resultant Cu_(2)O@HNTs hybrids not only give Cu_(2)O excellent dispersibility,but also exert the synergistic effect of the charge adsorption of metal oxides and the physical piercing effect of the small-sized nanotubes.Furthermore,the release of Cu^(2+)from hybrids damages cell membranes and denatures proteins and DNA.Through this sterilization mechanism,Cu_(2)O@HNTs allow for the inactivation rate of Escherichia coli to reach 94.5%within 2 min and complete inactivation within 10 min.This excellent sterilization mode makes Cu_(2)O@HNTs exhibit excellent broad-spectrum antibacterial activity and inactivation efficiency,while shows weak cytotoxicity.These hybrids were further applied in the processing of functional antibacterial fibers and fabrics.Thus,we believe that this excellent antibacterial hybrid is practically attractive in this critical time of the COVID-19 pandemic. | Yaping Wang Qianqian Wang Guoyi Wu Hengxue Xiang Mugaanire Tendo Innocent Mian Zhai Chao Jia Peng Zou Jialiang Zhou Meifang Zhu | 2022 | Journal of Materials Science & Technology2022，，27： | 0 |
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