Journal of Materials Science & Technology最新文献_第6页

Composition and microstructure engineering of Fe–Si–Co soft magnetic alloys with enhanced performance 具有更高性能的铁硅钴软磁合金的成分和微结构工程学

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2024-10-31 DOI: 10.1016/j.jmst.2024.08.069

Qiming Chen, Kebing Wang, Lingfeng Wang, Jiaying Jin, Mi Yan, Chen Wu

{"title":"Composition and microstructure engineering of Fe–Si–Co soft magnetic alloys with enhanced performance","authors":"Qiming Chen, Kebing Wang, Lingfeng Wang, Jiaying Jin, Mi Yan, Chen Wu","doi":"10.1016/j.jmst.2024.08.069","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.08.069","url":null,"abstract":"The growing demand for high-efficiency and low-loss energy conversion and transportation techniques urges the development of advanced Fe–Si based soft magnet alloys. Simultaneous achievement of low coercivity (Hc) and large saturation magnetization (Ms) however, remains challenging. In this study, soft magnetic alloys with the composition Fe82–xSi18Cox (x = 0 at.%, 4 at.%, 8 at.%, 12 at.%, 16 at.%, and 20 at.%) have been designed followed by microstructural tuning. The Co incorporation results in initially decreased Hc followed by increment due to reduced magnetocrystalline anisotropy and increased saturation magnetostriction from negative to positive values of the alloys. Meanwhile, the Ms raises with subsequent reduction, which origins from competitive mechanisms of increased average moment of Fe atoms and decreased average moment of Co atoms according to first principles calculations. Microstructural evolution during annealing of the Fe70Si18Co12 with synergistically optimized Hc and Ms has been revealed that after elevated-temperature annealing, the DO3 phase is predominately transformed from the B2 phase accompanied by an increase in the degree of ordering. The growth of the DO3 phase deteriorates the Hc due to the aggravating pinning effect on the domain wall movement, which arises from the inhomogeneous magnetization distribution caused by increasing antiphase boundaries.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"1 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142556228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing strength and ductility of CuCrZr high-conductivity alloy via lamellar heterostructures on grain boundaries 通过晶界上的片状异质结构提高 CuCrZr 高导电性合金的强度和延展性

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2024-10-28 DOI: 10.1016/j.jmst.2024.09.040

Xinhao Zhang, Xiaoxin Zhang, Jun Zhang, Xiaodong Huang, Qingzhi Yan

{"title":"Enhancing strength and ductility of CuCrZr high-conductivity alloy via lamellar heterostructures on grain boundaries","authors":"Xinhao Zhang, Xiaoxin Zhang, Jun Zhang, Xiaodong Huang, Qingzhi Yan","doi":"10.1016/j.jmst.2024.09.040","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.09.040","url":null,"abstract":"Heterogeneous lamellar structure materials have attracted extensive attention due to their exceptional strength and ductility. In this study, Y element was introduced into CuCrZr alloys to adjust the liquid phase formation temperature of the CuZrY phase during the solution annealing process. By employing cold rolling deformation prior to annealing to elongate the grains, the liquid phase was promoted to wet the elongated grain boundaries during the annealing process, ultimately forming lamellar CuZrY heterostructures distributed along the grain boundaries. The heterogeneous lamellar structure, the grain boundary distribution characteristics, and the effect of Y on stacking fault energy enhanced the hetero-deformation induced working hardening, thereby improving both the strength and ductility of the CuCrZrY alloy. Besides, the investigated CuCrZrY alloy achieved an excellent combination of tensile strength, uniform elongation, electrical conductivity and thermal conductivity, with values of 527 MPa, 10.66%, 83% IACS and 335.5 W/(m·K), respectively. Therefore, the method of controlling liquid phase temperature through composition adjustment and liquid phase infiltration path through grain deformation offers new possibilities for the design of heterogeneous lamellar structure materials.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"61 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temperature and loading-rate dependent critical stress intensity factor of dislocation nucleation from crack tip: Atomistic insights into cracking at slant twin boundaries in Nano-twinned TiAl alloys 与温度和加载速率相关的裂纹尖端差排成核临界应力强度因子：对纳米孪晶 TiAl 合金斜孪晶边界开裂的原子论见解

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2024-10-28 DOI: 10.1016/j.jmst.2024.10.007

Rong Fu, Zhiyuan Rui, Junping Du, Shihao Zhang, Fanshun Meng, Shigenobu Ogata

{"title":"Temperature and loading-rate dependent critical stress intensity factor of dislocation nucleation from crack tip: Atomistic insights into cracking at slant twin boundaries in Nano-twinned TiAl alloys","authors":"Rong Fu, Zhiyuan Rui, Junping Du, Shihao Zhang, Fanshun Meng, Shigenobu Ogata","doi":"10.1016/j.jmst.2024.10.007","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.10.007","url":null,"abstract":"This paper investigates the temperature and loading rate dependencies of the critical stress intensity factor (KIC) for dislocation nucleation at crack tips. We develop a new KIC formula with a generalized form by incorporating the atomistic reaction pathway analysis into Transition State Theory (TST), which captures the KIC of the first dislocation nucleation event at crack tips and its sensitivity to temperature and loading rates. We use this formula and atomistic modeling information to specifically calculate the KIC for quasi-two-dimensional crack tips located at various slant twin boundaries in nano-twinned TiAl alloys across a wide range of temperatures and strain rates. Our findings reveal that twinning dislocation nucleation at the crack tip dominates crack propagation when twin boundaries (TBs) are tilted at 15.79° and 29.5°. Conversely, when TBs tilt at 45.29°, 54.74°, and 70.53°, dislocation slip becomes the preferred mode. Additionally, at TB tilts of 29.5° and 70.53°, at higher temperatures above 800 K and typical experimental loading rates, both dislocation nucleation modes can be activated with nearly equal probability. This observation is particularly significant as it highlights scenarios that molecular dynamics simulations, due to their time scale limitations, cannot adequately explore. This insight underscores the importance of analyzing temperature and loading rate dependencies of the KIC to fully understand the competing mechanisms of dislocation nucleation and their impact on material behavior.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"44 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New System for Green EMI shielding: Organohydrogel with Multi-band Green Electromagnetic Shielding, Sensing, and Infrared-Stealth Capacity 绿色电磁干扰屏蔽新系统：具有多波段绿色电磁屏蔽、传感和红外隐身能力的有机水凝胶

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2024-10-28 DOI: 10.1016/j.jmst.2024.10.005

JiangYu Fang, Jian Xu, Peiyuan Zuo, Yukang Zhou, Chuanhao Tang, Jun Qian, Ruoqi Wang, Xiaoyun Liu, Qixin Zhuang

{"title":"New System for Green EMI shielding: Organohydrogel with Multi-band Green Electromagnetic Shielding, Sensing, and Infrared-Stealth Capacity","authors":"JiangYu Fang, Jian Xu, Peiyuan Zuo, Yukang Zhou, Chuanhao Tang, Jun Qian, Ruoqi Wang, Xiaoyun Liu, Qixin Zhuang","doi":"10.1016/j.jmst.2024.10.005","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.10.005","url":null,"abstract":"Current research on green EMI shielding materials is often based on the misconception that absorption-dominated shielding is achieved when reflection loss (SER) exceeds absorption loss (SEA). Although this misconception has been corrected by a large body of literature, few studies have actually achieved absorbed power (A) greater than reflected power (R). In this study, PVA, glycerol and MXene were combined to form an organohydrogel (PMG) with oriented pores. The gel displays remarkable flexibility and strength, attributed to its robust network of hydrogen bond cross-links (the hysteresis return line remains stable under 1000 compression cycles). The PMG20-3 organohydrogel (0.78 wt% MXene) demonstrates a shielding performance of 42.34 dB (A/R=1.38) in the X-band and absorbs 99.9% of power in the terahertz band. This performance exceeds that of most previously reported systems and represents a new system for green electromagnetic shielding materials. Additionally, the PMG organohydrogel has flexible sensing and infrared stealth capabilities. These findings hold great promise for the development of green electromagnetic shielding multifunctional devices.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"15 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coordination polymer derived transition metal phosphide/carbon composites for bifunctional oxygen electrocatalyst 用于双功能氧电催化剂的配位聚合物衍生过渡金属磷化物/碳复合材料

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2024-10-24 DOI: 10.1016/j.jmst.2024.09.043

Yue Du, Zhiyi Zhong, Lina Zhou, Wenxue Chen, Zhixian Shi, Pan Song, Yifeng Liu, Yao Yao, Yisi Liu, Shixue Dou, Yao Xiao

{"title":"Coordination polymer derived transition metal phosphide/carbon composites for bifunctional oxygen electrocatalyst","authors":"Yue Du, Zhiyi Zhong, Lina Zhou, Wenxue Chen, Zhixian Shi, Pan Song, Yifeng Liu, Yao Yao, Yisi Liu, Shixue Dou, Yao Xiao","doi":"10.1016/j.jmst.2024.09.043","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.09.043","url":null,"abstract":"Developing nonprecious electrocatalysts with bifunctional performances for oxygen reduction (ORR) and evolution reactions (OER) remains a crucial challenge in rechargeable Zn-air batteries (RZABs). In this study, we report the synthesis of a three-dimensional (3D) porous N, P-doped carbon-wrapped cobalt phosphide composite (Co2P@3DNPC) via direct calcination of a novel organic/inorganic porous coordination polymer by an in-situ phosphating strategy. DFT calculations demonstrate the intricate interactions occurring during the PEI-directed grinding self-assembly process among Co2+, phytic acid (PA), and polyethylenimine (PEI). Specifically, Co2+ ions initially adsorb onto PEI molecules before integrating with PA to form a 3D coordination polymer matrix. As-fabricated Co2P@3DNPC composite exhibits impressive ORR/OER bifunctional performances, with a half-wave potential of 0.78 V and an overpotential of 1.71 V, respectively. Its bifunctional activities enable a power density of 148.5 mW cm–2 in rechargeable ZABs, with remarkable stability (> 480 h) during a discharge-charge cycle. The interconnected porous structure and embedded Co2P nanoparticles optimize the electrode-electrolyte interfacial contact, boosting energy density and cycle life of as-assembled ZABs. This innovative approach paves the way for efficient, cost-effective production of bifunctional electrocatalysts for RZABs.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"109 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142488646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Atomically dispersed Ru on flower-like In2O3 to boost CO2 hydrogenation to methanol 在花状 In2O3 上原子分散 Ru，促进二氧化碳加氢制甲醇

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2024-10-24 DOI: 10.1016/j.jmst.2024.10.004

Mengyao Xu, Fei Liu, Shike Liu, Jun Ma, Mengqin Yao, Xiaodan Wang, Jianxin Cao

{"title":"Atomically dispersed Ru on flower-like In2O3 to boost CO2 hydrogenation to methanol","authors":"Mengyao Xu, Fei Liu, Shike Liu, Jun Ma, Mengqin Yao, Xiaodan Wang, Jianxin Cao","doi":"10.1016/j.jmst.2024.10.004","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.10.004","url":null,"abstract":"Metal-based catalysts are prevalent in the CO2 hydrogenation to methanol owing to their remarkable catalytic activity. Herein, Ru/In2O3 catalysts with different morphologies obtained by doping Ru into In2O3 with irregular, rod-like, and flower-like morphologies are used for catalytic CO2 hydrogenation to methanol. Results indicate that the flower-like Ru/In2O3 (Ru/In2O3-F) exhibits higher catalytic performance than Ru/In2O3 with other morphologies, achieving a 12.9% CO2 conversion, 74.02% methanol selectivity, and 671.36 mgMeOH·h−1·gcat−1 methanol spatiotemporal yield. Furthermore, Ru/In2O3-F maintains its catalytic stability over 200 h at 5 MPa and 290 °C. The promotional effect mainly stems from the fact that electronic structure of Ru can be effectively adjusted by modulating the morphology of In2O3. The strong interaction between atomically dispersed Ru and In2O3-F enhances the structural stability of Ru, inhibiting the agglomeration of the catalyst during the reaction process. Furthermore, density-functional theory calculations reveal that highly dispersed Ru atoms not only perform efficient and rapid electronic gain and loss processes, facilitating the catalytic activation of H2 into H intermediates. It also enables the generated reactive H to rapidly overflow to the surrounding In sites to participate in CO2 reduction. These findings provide a theoretical basis for the development of high-performance catalysts for CO2 hydrogenation.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"44 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Silver nanoparticles bridging liquid metal for wearable electromagnetic interference fabric 桥接液态金属的银纳米粒子用于可穿戴式电磁干扰织物

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2024-10-24 DOI: 10.1016/j.jmst.2024.10.006

Gui Yang, Xiaoyuan Zhang, Jingzhan Zhu, Zichao Li, Duo Pan, Fengmei Su, Youxin Ji, Chuntai Liu, Changyu Shen

{"title":"Silver nanoparticles bridging liquid metal for wearable electromagnetic interference fabric","authors":"Gui Yang, Xiaoyuan Zhang, Jingzhan Zhu, Zichao Li, Duo Pan, Fengmei Su, Youxin Ji, Chuntai Liu, Changyu Shen","doi":"10.1016/j.jmst.2024.10.006","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.10.006","url":null,"abstract":"Stretchable conductive fibers are essential for the advancement of wearable electronic textiles. However, a significant challenge arises as their conductivity sharply decreases when stretched due to disruptions in electronic transport. Coating fibers with soft liquid metal (LM) has emerged as a promising solution. Despite this, there remains an urgent need to develop methods that enhance LM adhesion to substrates while facilitating efficient electron transport pathways. This study demonstrates a novel Ag-LM conductive network strategy for fabricating a thermoplastic polyurethane/polydopamine/silver-LM (TPU/PDA/Ag-LM) fiber membrane. This membrane exhibits outstanding stretchable electromagnetic interference (EMI) shielding performance and is produced through straightforward electrospinning, electroless depositing, and LM coating and activation. The TPU/PDA/Ag fiber membrane is initially prepared via polydopamine-assisted deposition of silver nanoparticles (AgNPs) on electrospun TPU fibers. The presence of AgNPs on the surface of TPU/PDA fibers enhances LM adhesion to the substrate and bridges adjacent LM to establish efficient conductive paths. This interaction benefits from the reactive alloying between AgNPs and LM, where the LM infiltrates the gaps among AgNPs, forming a distinctive LM-Ag alloy layer that uniformly coats the surface of TPU fibers. As anticipated, the unique three-dimensional (3D) interconnected LM-Ag conductive network remains intact during stretching, ensuring strain-invariant conductivity. The fabricated TPU/PDA/Ag-LM fiber membrane demonstrates exceptional EMI shielding effectiveness (SE) of 77.4 dB within the frequency range of 8.2–12.8 GHz and maintains an excellent EMI SE of 37.2 dB under extensive tensile deformation of 300%. Furthermore, the TPU/PDA/Ag-LM fiber membrane shows remarkable mechanical properties and stable Joule heating performance even under significant stretching.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"26 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142488983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultra-high strength and ductility of eutectic high-entropy alloy with duplex heterostructure at room and cryogenic temperatures 具有双相异质结构的共晶高熵合金在室温和低温下的超高强度和韧性

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2024-10-24 DOI: 10.1016/j.jmst.2024.10.008

Xiangkui Liu, Jingying Liu, Chenglong Zhou, Weixia Dong, Xuecong Zhang, Qianye Wang, Huiqing Xu, Xulong An, Dandan Wang, Wei Wei, Zhenfei Jiang

引用次数: 0

Structural reconstruction synthesis of highly luminous water-stable CsPbBr3@CsPb2Br5@DSPE core-shell perovskite nanocrystals for bioimaging, pattering, and LEDs 用于生物成像、图案化和 LED 的高亮度水稳 CsPbBr3@CsPb2Br5@DSPE 核壳包晶石纳米晶体的结构重构合成

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2024-10-24 DOI: 10.1016/j.jmst.2024.09.041

Jiejun Ren, Longyun Liu, Fan Liu, Huiping Liu, Xiaopeng Zhou, Gen Li, Liangjun Chen, Guoping Yan, Yuhua Wang

{"title":"Structural reconstruction synthesis of highly luminous water-stable CsPbBr3@CsPb2Br5@DSPE core-shell perovskite nanocrystals for bioimaging, pattering, and LEDs","authors":"Jiejun Ren, Longyun Liu, Fan Liu, Huiping Liu, Xiaopeng Zhou, Gen Li, Liangjun Chen, Guoping Yan, Yuhua Wang","doi":"10.1016/j.jmst.2024.09.041","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.09.041","url":null,"abstract":"Lead halide perovskite (LHP) nanocrystals (NCs) suffer from poor stability against environmental factors (heat, moisture, oxygen, etc.), which seriously hinders their practical application. Constructing a core-shell structure could be an effective approach to improve the stability and optical properties of the LHP NCs. Herein, a novel strategy of water-triggered phase transformation and phospholipid (DSPE) micelle encapsulation is proposed, generating highly luminescent water-dispersed CsPbBr3@CsPb2Br5@DSPE core-shell-shell nanocrystals. The epitaxial growth of the CsPb2Br5 shell is induced by the in-situ reconstruction of the CsPbBr3 surface by water erosion, and the lattice mismatch with the CsPbBr3 core is small (3.8%). The further amphipathic phospholipid encapsulation guarantees their excellent water dispersity and stability. Revealed by the femtosecond transient absorption spectroscopy, the dense CsPb2Br5@DSPE shell effectively passivates the surface of the CsPbBr3 core, thus improving its stability and luminescence performance. The resulting CsPbBr3@CsPb2Br5@DSPE nanoparticles exhibit excellent performance as fluorescent probes for bioimaging, aqueous inks for high-resolution pattering, and light conversion layers for LEDs, demonstrating their promising potential in multiple applications.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"43 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142488647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-strength self-healing multi-functional hydrogels with worm-like surface through hydrothermal-freeze-thaw method 通过水热冻融法获得具有蠕虫状表面的高强度自愈合多功能水凝胶

IF 10.9 1区材料科学

Journal of Materials Science & Technology Pub Date : 2024-10-24 DOI: 10.1016/j.jmst.2024.09.042

Liping Li, Wanhui Shi, Yang Yang, Yunzhen Chang, Ying Zhang, Shujie Liu, Sheng Zhu, Gaoyi Han

{"title":"High-strength self-healing multi-functional hydrogels with worm-like surface through hydrothermal-freeze-thaw method","authors":"Liping Li, Wanhui Shi, Yang Yang, Yunzhen Chang, Ying Zhang, Shujie Liu, Sheng Zhu, Gaoyi Han","doi":"10.1016/j.jmst.2024.09.042","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.09.042","url":null,"abstract":"Soft self-healing materials are promising candidates for flexible electronic devices due to their exceptional compatibility, extensibility, and self-restorability. Generally, these materials suffer from low tensile strength and susceptibility to fracture because of the restricted microstructure design. Herein, we propose a hydrothermal-freeze-thaw method to construct high-strength self-healing hydrogels with even interconnected networks and distinctive wrinkled surfaces. The integration of the wrinkled outer surface with the three-dimensional internal network confers the self-healing hydrogel with enhanced mechanical strength. This hydrogel achieves a tensile strength of 223 kPa, a breaking elongation of 442%, an adhesion strength of 57.6 kPa, and an adhesion energy of 237.2 J m-2. Meanwhile, the hydrogel demonstrates impressive self-repair capability (repair efficiency: 93%). Moreover, the density functional theory (DFT) calculations are used to substantiate the stable existence of hydrogen bonding between the PPPBG hydrogel and water molecules which ensures the durability of the PPPBG hydrogel for long-term application. The measurements demonstrate that this multifunctional hydrogel possesses the requisite sensitivity and durability to serve as a strain sensor, which monitors a spectrum of motion signals including subtle vocalizations, pronounced facial expressions, and limb articulations. This work presents a viable strategy for healthcare monitoring, soft robotics, and interactive electronic skins.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"64 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142488645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0