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A personalized electronic textile for ultrasensitive pressure sensing enabled by biocompatible MXene/ PEDOT:PSS composite

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Carbon Energy 2024年第3期6卷 224-238页

作者： Yahua Li Wentao Cao Zhi Liu Yue Zhang Ziyan Chen xianhong zheng Department of Interventional Radiology The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenanChina School of Textile and Garment Anhui Polytechnic UniversityWuhuAnhuiChina Department of Prosthodontics Shanghai Stomatological Hospital and School of StomatologyFudan UniversityShanghaiChina College of Chemistry Chemical Engineering and BiotechnologyDonghua UniversityShanghaiChina

Flexible,breathable,and highly sensitive pressure sensors have increasingly become a focal point of interest due to their pivotal role in healthcare monitoring,advanced electronic skin applications,and disease ***,traditional methods,involving elastomer film-based substrates or encapsulation techniques,often fall short due to mechanical mismatches,discomfort,lack of breathability,and limitations in sensing ***,there is a pressing need,yet it remains a significant challenge to create pressure sensors that are not only highly breathable,flexible,and comfortable but also sensitive,durable,and ***,we present a biocompatible and breathable fabric-based pressure sensor,using nonwoven fabrics as both the sensing electrode(coated with MXene/poly(3,4-ethylenedioxythiophene):polystyrene sulfonate[PEDOT:PSS])and the interdigitated electrode(printed with MXene pattern)via a scalable spray-coating and screen-coating *** resultant device exhibits commendable air permeability,biocompatibility,and pressure sensing performance,including a remarkable sensitivity(754.5 kPa^(−1)),rapid response/recovery time(180/110 ms),and robust cycling ***,the integration of PEDOT:PSS plays a crucial role in protecting the MXene nanosheets from oxidation,significantly enhancing the device's long-term *** outstanding features make this sensor highly suitable for applications in fullrange human activities detection and disease *** study underscores the promising future of flexible pressure sensors in the realm of intelligent wearable electronics,setting a new benchmark for the industry.

关键词： biocompatibility MXene pressure sensor screen printing textile

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MXene基罗纹针织物的制备及其应变传感性能

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精细化工 2024年第5期41卷 1014-1021页

作者：郑贤宏唐金好丁斌斌夏文李长龙王炜东华大学化学化工与生物工程学院上海201620 安徽工程大学纺织服装学院安徽芜湖241000 三元控股集团有限公司浙江杭州311200 浙江理工大学纺织科学与工程学院浙江杭州310018

借鉴染色工艺,采用轧烘焙技术制备了高弹性导电过渡金属碳化物/氮化物(MXene)基罗纹针织物,通过SEM、电阻测试、传感性能测试对其进行了结构和性能表征。结果表明,MXene基罗纹针织物具有较好的弹性和弹性回复性,并且织物中MXene负载量... 详细信息

借鉴染色工艺,采用轧烘焙技术制备了高弹性导电过渡金属碳化物/氮化物(MXene)基罗纹针织物,通过SEM、电阻测试、传感性能测试对其进行了结构和性能表征。结果表明,MXene基罗纹针织物具有较好的弹性和弹性回复性,并且织物中MXene负载量随轧烘焙循环次数的增加而增加,织物电阻随轧烘焙循环次数的增加而降低,最低为38.3Ω/□;织物的应变传感性能测试表明,MXene基罗纹针织物传感性能具有明显的各向异性,并且横列方向的传感性能优于纵行方向。MXene基罗纹针织物横列方向的传感系数和传感区间分别为72.80、0~160%,远高于纵行方向(最大传感系数为4.4,传感区间为0~24%)。

关键词： MXene 罗纹针织物应变传感器传感系数功能材料

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基于氨纶纱线应变传感器的制备及其可穿戴应用

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塑料工业 2024年第7期52卷 162-167,178页

作者：冯岳李鑫月郑贤宏王勇徐珍珍胡侨乐安徽工程大学纺织服装学院安徽芜湖241000

具有优良导电性能和高灵敏度的柔性应变传感器是可穿戴电子设备的理想选择。然而如何寻求最佳导电材料以及低成本大规模制造柔性应变传感器仍然是一个挑战。本文以高弹性氨纶(PU)为基材,利用浸渍涂覆和原位聚合方式,制备MXene、MXene-... 详细信息

具有优良导电性能和高灵敏度的柔性应变传感器是可穿戴电子设备的理想选择。然而如何寻求最佳导电材料以及低成本大规模制造柔性应变传感器仍然是一个挑战。本文以高弹性氨纶(PU)为基材,利用浸渍涂覆和原位聚合方式,制备MXene、MXene-碳纳米管(CNT)和MXene-聚苯胺(PANI)改性PU纱线(PU@MXene、PU@MXene-CNT、PU@MXene-PANI),分析改性方式对PU纱线电化学及传感性能的影响。结果表明,PU改性方式对其电学性能具有重要的影响。单一MXene改性PU,纱线电导率仅为36.8 S/cm,CNT引入易在MXene片层间提供导电通路,纱线电导率提高到134.9 S/cm。相比之下,PU纱线原位聚合PANI,不仅可以形成均匀导电层,同时为MXene提供负载位点,使得PU纱线表面形成稳定均匀导电层,纱线电导率达到最高为948.8 S/cm,相比PU@MXene和PU@MXene-CNT分别提高了300%和90%。在不同应变曲率的人体运动监测方面,PU@MXene-PANI表现出高灵敏性和稳定的电信号输出。因此,该柔性应变传感器为下一代智能可穿戴设备提供了一个很好的选择。

关键词：柔性应变传感器氨纶纱线 MXene 碳纳米管聚苯胺电学性能

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A review of integrated surface-subsurface numerical hydrological models

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Science China Earth Sciences 2024年第5期67卷 1459-1479页

作者： Lele SHU Hao CHEN xianhong MENG Yan CHANG Litang HU Wenke WANG Longcang SHU Xuan YU Christopher DUFFY Yingying YAO Donghai zheng Key Laboratory of Cryospheric Science and Frozen Soil Engineering Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China College of Water Sciences Beijing Normal UniversityBeijing 100038China School of Water and Environment Chang’an UniversityXi’an 710064China College of Hydrology and Water Resources Hohai UniversityNanjing 210098China State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China Department of Civil and Environmental Engineering Pennsylvania State UniversityState CollegePA 16801USA Department of Earth and Environmental Science School of Human Settlements and Civil EngineeringXi’an Jiaotong UniversityXi’an 710049China Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100101China

Hydrological modeling,leveraging mathematical formulations to represent the hydrological cycle,is a pivotal tool in representing the spatiotemporal dynamics and distribution patterns inherent in *** models serve a dual purpose:they validate theoretical robustness and applicability via observational data and project future trends,thereby bridging the understanding and prediction of natural *** rapid advancements in computational methodologies and the continuous evolution of observational and experimental techniques,the development of numerical hydrological models based on physicallybased surface-subsurface process coupling have *** in micro-scale conservation principles and physical equations,these models employ numerical techniques to integrate surface and subsurface hydrodynamics,thus replicating the macro-scale hydrological responses of *** hydrological models have emerged as a leading and predominant trend in hydrological modeling due to their explicit representation of physical processes,heightened by their spatiotemporal resolution and reliance on interdisciplinary *** article focuses on the theoretical foundation of surface-subsurface numerical hydrological *** includes a comparative and analytical discussion of leading numerical hydrological models,encompassing model architecture,numerical solution strategies,spatial representation,and coupling ***,this paper contrasts these models with traditional hydrological models,thereby delineating the relative merits,drawbacks,and future directions of numerical hydrological modeling.

关键词： Numerical Hydrological Models Surface-Subsurface Process Coupling Numerical Methods Hydrological Modeling

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Effect of p62 on tau hyperphosphorylation in a rat model of Alzheimer's disease

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Neural Regeneration Research 2012年第17期7卷 1304-1311页

作者： xianhong zheng Weiwei Wang Ruizhi Liu Honglan Huang Rihui Zhang Liankun Sun Department of Cytobiology Norman Bethune College of Medicine Jilin University Changchun 130021 Jllin Province China Department of Pathophysiology Norman Bethune College of Medicine Jilin University Changchun 130021 Jilin Province China Department of Pathogen Biology Norman Bethune College of Medicine Jllin University Changchun 130021 Jilin Province China Department of Physiology Norman Bethune College of Medicine Jilin University Changchun 130021 Jilin Province China

Tau hyperphosphorylation is a main cause of neuronal loss in Alzheimer＇s disease, which can be caused by many factors, including oxidative stress. The multifunctional protein p62, which exists in neurofibrillary tangles and causes aggregation of hyperphosphorylated tau, not only serves as a receptor in selective autophagy, but also regulates oxidative stress. However, whether p62 participates in oxidative stress-induced tau hyperphosphorylation remains unclear. In this study, we produced an Alzheimer＇s disease rat model by injecting 13-amyloid protein into the hippocampus and ^-galactose intraperitoneally. Hematoxylin-eosin staining was used for morphological analysis of brain tissue, and western blotting, immunohistochemistry and reverse transcription-PCR were employed to study p62 and autophagy related proteins, antioxidant defense system kelch-like ECH-associated protein 1-NF-E2-related factor 2 related proteins and hyperphosphorylated tau, respectively. The number of neurons in the brain decreased in Aizheimer＇s disease rats, and the autophagy related proteins Atg12-Atg5, microtubule-associated protein 1 light chain 3-phosphatidylethanolamine and Beclinl increased significantly, while p62 expression reduced. Expression of kelch-like ECH-associated protein 1 increased, NF-E2-related factor 2 protein and the downstream gene products of glutamate cysteine ligase catalytic subunit and glutamate cysteine ligase modulatory subunit decreased, and hyperphosphorylated tau increased. These findings demonstrate that autophagy levels increased and p62 levels decreased in the brains of Alzheimer＇s disease rats. Moreover, the anti-oxidative capability of the NF-E2-related factor 2-antioxidant response element pathway was decreased, which may be the cause of tau hyperphosphorylation in Alzheimer＇s disease brain tissue and the subsequent structural and functional damage to neurons.

关键词： Alzheimer's disease autophagy p62 NF-E2-related factor 2 tau hyperphosphorylation neuralregeneration

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Near‑Instantaneously Self‑Healing Coating toward Stable and Durable Electromagnetic Interference Shielding

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Nano-Micro Letters 2021年第11期13卷 452-467页

作者： Lihua Zou Chuntao Lan Songlin Zhang xianhong zheng Zhenzhen Xu Changlong Li Li Yang Fangtao Ruan Swee Ching Tan Anhui Province International Cooperation Research Center of Textile Structure Composite Materials Anhui Polytechnic UniversityAnhui 241000WuhuPeople’s Republic of China Department of Materials Science and Engineering National University of Singapore9 Engineering Drive 1Singapore 117575Singapore Key Laboratory of Eco‑Textiles Ministry of EducationJiangnan UniversityWuxi 214122JiangsuPeople’s Republic of China Department of Mechanical Engineering University of DelawareNewarkDE 19716USA

Durable electromagnetic interference(EMI)shielding is highly desired,as electromagnetic pollution is a great concern for electronics’stable performance and human *** a superhydrophobic surface can extend the service lifespan of EMI shielding materials,degradation of its protection capability and insufficient self-healing are troublesome issues due to unavoidable physical/chemical damages under long-term application ***,we report,for the first time,an instantaneously self-healing approach via microwave heating to achieve durable shielding ***,a hydrophobic 1H,1H,2H,2H-perfluorooctyltriethoxysilane(POTS)layer was coated on a polypyrrole(PPy)-modified fabric(PPy@POTS),enabling protection against the invasion of water,salt solution,and corrosive acidic and basic ***,after being damaged,the POTS layer can,for the first time,be instantaneously self-healed via microwave heating for a very short time,i.e.,4 s,benefiting from the intense thermal energy generated by PPy under electromagnetic wave *** self-healing ability is also repeatable even after intentionally severe plasma etching,which highlights the great potential to achieve robust and durable EMI shielding ***,this approach can be extended to other EMI shielding materials where heat is a triggering stimulus for healing thin protection *** envision that this work could provide insights into fabricating EMI shielding materials with durable performance for portable and wearable devices,as well as for human health care.

关键词： Electromagnetic interference shielding Superhydrophobic coating Multifunctional textiles Self-healing Conductive polymer

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中空磁性Fe_(3)O_(4)纳米球/MXene复合棉织物的制备及其电磁屏蔽性能

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纺织学报 2023年第11期44卷 142-150页

作者：郑贤宏唐金好李长龙王炜东华大学化学与化工学院上海201620 安徽工程大学纺织服装学院安徽芜湖241000 三元控股集团有限公司浙江杭州311200

为优化导电织物对电磁波的阻抗匹配性,减少电磁波的二次污染,在棉织物中引入磁损耗材料中空Fe_(3)O_(4)纳米球,并通过层层组装的方法将其与过渡金属碳化物/氮化物(MXene)结合制备中空磁性Fe_(3)O_(4)纳米球/MXene复合棉织物,探究中空磁... 详细信息

为优化导电织物对电磁波的阻抗匹配性,减少电磁波的二次污染,在棉织物中引入磁损耗材料中空Fe_(3)O_(4)纳米球,并通过层层组装的方法将其与过渡金属碳化物/氮化物(MXene)结合制备中空磁性Fe_(3)O_(4)纳米球/MXene复合棉织物,探究中空磁性Fe_(3)O_(4)纳米球对复合棉织物电磁屏蔽性能的影响规律和作用机制。借助超景深显微镜、扫描电子显微镜和矢量网络分析仪对中空磁性Fe_(3)O_(4)纳米球/MXene复合棉织物的形貌结构和电磁屏蔽性能进行表征与分析。结果表明:通过水热合成制备的Fe_(3)O_(4)具有中空球状形貌和尖晶石晶体结构,颗粒尺寸较为均匀,为(271.9±4.6)nm;随着Fe_(3)O_(4)/MXene负载循环次数的增加,复合棉织物的方阻逐渐减小,最低为(10.5±1.7)Ω/,并展现出较好的透气性;复合棉织物的电磁屏蔽性能也逐渐增强,最高电磁屏蔽效能可达(29.03±0.3)dB,且织物的屏蔽机制由吸收为主逐渐向反射为主转变,其优异的电磁屏蔽性能主要归因于MXene纳米片和中空磁性Fe_(3)O_(4)纳米球的协同作用。

关键词：过渡金属碳化物/氮化物 Fe_(3)O_(4)纳米球复合棉织物层层组装电磁屏蔽屏蔽机制

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碳纤维增强聚合物基复合材料回收再利用现状

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复合材料学报 2022年第1期39卷 64-76页

作者：胡侨乐端玉芳刘志郑贤宏徐珍珍安徽工程大学纺织服装学院芜湖241000 中电科芜湖钻石飞机制造有限公司芜湖241000

优异性能的碳纤维增强聚合物基复合材料(CFRPs)在各领域的快速应用发展给复合材料废弃物的回收带来了挑战,尤其是碳纤维增强热固性复合材料。为有效回收碳纤维增强复合材料,促进复合材料产业的可持续发展,本文从多个角度对废弃CFRPs回... 详细信息

优异性能的碳纤维增强聚合物基复合材料(CFRPs)在各领域的快速应用发展给复合材料废弃物的回收带来了挑战,尤其是碳纤维增强热固性复合材料。为有效回收碳纤维增强复合材料,促进复合材料产业的可持续发展,本文从多个角度对废弃CFRPs回收再利用研究现状进行综述,包括各回收工艺技术特点、应用领域及可降解树脂实现回收CFRPs的新策略。最后对CFRPs回收再利用技术的未来发展趋势进行了展望。

关键词：碳纤维碳纤维复合材料增强聚合物废弃复合材料回收技术

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柔性纺织纤维基超级电容器研究进展

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纺织学报 2022年第7期43卷 200-206,216页

作者：聂文琪孙江东许帅郑贤宏徐珍珍安徽工程大学纺织服装学院安徽芜湖241000 青岛大学省部共建生物多糖纤维成形与生态纺织国家重点实验室山东青岛266071

为促进纤维基超级电容器在柔性能量存储领域的应用,以纺织纤维原料为类别,对高性能纤维(碳纳米管纤维,石墨烯纤维)、天然纤维、合成纤维基超级电容器的研究进行综述。在此基础上,对不同类型的纤维基超级电容器性能分析对比,总结各种纤... 详细信息

为促进纤维基超级电容器在柔性能量存储领域的应用,以纺织纤维原料为类别,对高性能纤维(碳纳米管纤维,石墨烯纤维)、天然纤维、合成纤维基超级电容器的研究进行综述。在此基础上,对不同类型的纤维基超级电容器性能分析对比,总结各种纤维基超级电容器的优缺点。结果表明,高性能纤维基超级电容器的纤维结构、传荷位阻、离子扩散速率决定了纤维比能量及循环寿命,但该类型纤维基超级电容器受限于纤维材料的力学性能,后续织造较为困难;天然、合成纤维可满足后道纺织工艺对纤维的力学要求,易与纺织品结合成为整体,其储能大小受活性物质结构、密度、电荷传递协同效应影响较大。最后,针对柔性纤维基超级电容器研究存在的问题进行说明并对未来需要攻克的重点难点进行分析及展望。

关键词：纤维超级电容器柔性储能能量密度碳纳米管纤维石墨烯纤维可穿戴纺织品

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Fabrication, Mechanical and Dielectric Characterization of 3D Orthogonal Woven Basalt Reinforced Thermoplastic Polyimide Composites

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Journal of Textile Science and Technology 2015年第1期1卷 35-44页

作者： Shuna Hou Jianfei Xie Ye Kuang xianhong zheng Lan Yao Yiping Qiu Key Laboratory of Textile Science and Technology Ministry of Education College of Textiles Donghua University Shanghai China

The 3D orthogonal woven basalt fiber reinforced polyimide (PI) composites were fabricated and characterized in this study. The PI film was firstly prepared to determine PI processing parameters. Fourier transform infrared (FTIR) analysis showed that 300°C was the suitable imidization temperature. Thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) results showed relatively good thermal properties of the PI film. In the fabrication of composites, the multi-step impregnation method was applied. The bending properties of 3 mm-thick composite showed increasing trend in all and the second-time impregnated composite had much higher value than the first-time impregnated composite. Moreover, the bending fracture mode photos showed obvious creases except for the first-time impregnated materials, which agreed well with the bending property values. The dielectric constants for the composites were complex because they had not regular value following the mixing rule of the composites, which was mainly due to the interfacial polarization and other effects in the fabrication processing.

关键词： 3D Orthogonal Woven Structure Basalt Fiber Thermoplastic Polyimide Bending Properties Dielectric Properties

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