MATERIALS & DESIGN
·
2021
·
IF 7.991
Yadong Wu,Xiuyan Cheng,Shaoyun Chen,Bo Qu,Rui Wang,Dongxian Zhuo,Lixin Wu
To improve the interlaminar properties of carbon fiber reinforced polymer composites (CFRPs), a hybrid fiber mat (i-MBP-PCF) was prepared by in situ deposition of a multiwalled carbon nanotube buckypaper (i-MBP) on the surface of functionalized CF fabric (PCF). The effect of the hybrid fiber mat on the interlaminar and electrical properties was systematically investigated. The results showed that the i-MBP-PCF hybrid fiber mat showed excellent interlaminar and electrical property enhancement functions. The interlaminar shear strength (ILSS), Mode-II interlaminar fracture toughness (G IIC ), and electrical conductivity in the out-of-plane direction of i-MBP-PCF/EP increased 68.6%, 44.4%, and 6080%, respectively, compared to those of the CF/EP composite.
研究领域:
材料科学
·
工程学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Yingqing Zhan,Zhihang Long,Xinyi Wan,Jiemin Zhang,Shuangjiang He,Yi He
To obtain high-performance electromagnetic shielding materials, structure and morphology are two key factors. We here developed an efficient and facial method to prepare high-performance 3D carbon nanofiber mats (CFM)/Fe 3 O 4 hybrid electromagnetic shielding materials. For this purpose, the CFM were chemically modified by mussel-inspired poly-dopamine coating, which were further used as templates for decoration of Fe 3 O 4 nanoparticles via solvothermal route. It was found that the Fe 3 O 4 nano-spheres with diameters of 200–250 nm were uniformly coated on the surface of 3D carbon nanofibers. More importantly, the morphology and structure of resulting 3D carbon nanofiber mats/Fe 3 O 4 hybrids could be easily controlled by altering the experiment parameters, which were examined by FT-IR, XPS, TGA, XRD, SEM, and TEM. The measured magnetic properties showed that saturation magnetism and coercivity increased from 13.4 to 39.7 emu/g and 85.3 to 104.6 Oe, respectively. The lowest reflectivity of resulting hybrid was calculated to be −47 dB at 10.0 GHz (2.5 mm). In addition, the reflectivity of 3D carbon nanofiber mats/Fe 3 O 4 hybrid was less than −25 dB in the range of 7–13 GHz. Moreover, the resulting 3D carbon nanofiber mats/Fe 3 O 4 hybrid exhibited an EMI shielding performance of −62.6 dB in the frequency range of 8.2–12.4 GHz. Therefore, 3D carbon fiber mats/Fe 3 O 4 hybrids can be ideal EMI materials with strong absorption, low density, and wide absorption range.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Xiaohui Yuan,Lei Wen,Chao Wang,Yushun Zhao,Yingchun Zhou,Gong Cheng,Chenxi Zhao,Xiaodong He,Chao Sui
Ceramic fiber materials with high mechanical robustness and outstanding thermal stability are highly sought for high-temperature thermal insulation applications. However, the practical use of traditional ceramic fibrous mats has been hindered by their limited tensile strength, resulting in ceramic fibrous mats being easily deformed or broken under actual conditions. In this study, we present the fabrication of biomimetic, cocoon-like Al 2 O 3 -SiO 2 composite fibrous mats incorporating amorphous SiO 2 , γ-Al 2 O 3 , and mullite phases through the centrifugal spinning technique. The maximum tensile strength of these composite mats is determined to be 5.35 MPa, which is superior to most ceramic fiber materials. Additionally, the Al 2 O 3 -SiO 2 composite fibrous mats demonstrate excellent thermal insulation properties, with a thermal conductivity as low as 0.026 W/(m·K) at room temperature and 0.14 W/(m·K) at 1000 °C. These exceptional characteristics position Al 2 O 3 -SiO 2 composite fibrous mats as promising materials for thermal insulation in industrial, aerospace, and other demanding environments.
研究领域:
材料科学
·
陶瓷
·
热工工程
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
·
2017
·Vol. 106
·期 5
·1827-1841
·
IF 3.189
Yikun Yang,Chunyi Tong,Juchang Zhong,Ruiying Huang,Weihong Tan,Zhikai Tan
Magnetic hyperthermia has been rapidly developed as a potential cancer treatment in recent years. Artificially induced hyperthermia close to a tumor can raise the temperature to 45°C causing tumor cell death. Herein, we introduce a novel method for rapid preparation of anti-cancer magnetocaloric PCL/Fe 3 O 4 mats capable of high-performance hyperthermia using E-jet 3D printing technology. Our 3D printed mats not only maintained the heating efficiency of traditional techniques for magnetic hyperthermia but also prolonged the effective therapy in vivo . When Fe 3 O 4 nanoparticles (NPs) were used in mats at a concentration of 6 mmol/L, 0.07 g PCL/Fe 3 O 4 mats were able to increase the temperature peripherally to 45°C under an alternating magnetic field (AMF) within 45 min. Moreover, the reproducibility experiment indicated that the maximum temperature was achieved following repeated heating and cooling cycles. Cell toxicity tests showed a high cell death rate during one treatment cycle. In vivo experiments indicated clear signs of tumor growth inhibitory and prolonged survival time of tumor-bearing mice after 4 weeks of treatment. The present magnetic mats may be a potential candidate for a novel heat-generating substrate for localized hyperthermia cancer therapy. Furthermore, the main advantage of such implantable magnetic mats is the local and precise delivery of Fe 3 O 4 NPs, ideal for the hyperthermia treatment of easily accessible tumors. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1827–1841, 2018.
研究领域:
生物医学工程
·
材料科学
·
肿瘤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TEXTILE RESEARCH JOURNAL
·
2024
·
IF 1.6
Chenkai Zhu,Jiawei Li,Changyong Huang,Lei Nie,Libin Lu,Wuxiang Zhang,Dongming Qi
The flame-retardant performance of carbon fiber reinforced composites serves as a critical metric for structural stability. Nonetheless, the prevalent methodologies for improving the flame retardancy of composites struggle to reconcile the dual objectives of flame retardancy and mechanical robustness, due in part to the constraints imposed by the conventional additive-based approach on the material interface. This study introduced a novel method involving a glass fiber mat, which was augmented with a polyurethane-based treatment integrated with flame-retardant substances, in particular ammonium polyphosphate and nickel hydroxide. This fiber mat was strategically applied to the composite surface, conferring both flame retardancy and enhanced structural resilience. The structure performance and flame retardancy of composites were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and the cone calorimeter test. Experimental comparisons with nontreated controls indicated that the innovative composites exhibited a reduction in total heat release and total smoke production by 13.7% and 18.8%, respectively. Concurrently, a notable enhancement in mechanical properties was observed, with increases of 20.9% and 23.1% for tensile and flexural strength. This well-balanced performance is attributable to the structure design, with toughened glass fiber mats to protect the composite surfaces from structural failure, and flame-retardant agent composition for combustion resistance and smoke suppression. Consequently, the proposed integrative flame-retardant structural design, enriched with specific flame-retardant treatments, offers a promising avenue for fabricating high-performance composite materials with potential utility in the aviation and aerospace sectors.
研究领域:
材料科学
·
复合材料工程
✓ 已验证
DOI
高影响因子
Royal Society Open Science
·
2016
·Vol. 3
·期 12
·
IF 0
Zhuwen Chen,Jiaying Zeng,Dong Lv,Jinqiang Gao,Jian Zhang,Shan Bai,Ruili Li,Mei Hong,Jingshen Wu
Some key parameters of supports such as porosity, pore shape and size are of great importance for fabrication and performance of zeolite membranes. In this study, we fabricated millimetre-thick, self-standing electrospun ceramic nanofibre mats and employed them as a novel support for zeolite membranes. The nanofibre mats were prepared by electrospinning a halloysite nanotubes/polyvinyl pyrrolidone composite followed by a programmed sintering process. The interwoven nanofibre mats possess up to 80% porosity, narrow pore size distribution, low pore tortuosity and highly interconnected pore structure. Compared with the commercial α-Al2O3 supports prepared by powder compaction and sintering, the halloysite nanotube-based mats (HNMs) show higher flux, better adsorption of zeolite seeds, adhesion of zeolite membranes and lower Al leaching. Four types of zeolite membranes supported on HNMs have been successfully synthesized with either in situ crystallization or a secondary growth method, demonstrating good universality of HNMs for supporting zeolite membranes.
研究领域:
材料科学
·
纳米技术
·
膜科学
·
陶瓷
✓ 已验证
DOI
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2022
·Vol. 30
·期 6
·2579-2588
·
IF 4.705
Alipour Mahdieh,Aghazadeh Marziyeh,Ramezani Soghra,Taherzadeh Sana,Ghorbani Marjan,Aghazadeh Zahra
Eelectrospun fibrous mats for oral ulcer dressing should be able to attach oral mucosa in a high moisture environment and provide desirable therapeutic effects. Ethylcellulose and Gliadin are appropriate polymers in this regard. In the current study, first, Triamcinolone was integrated into Gliadin/Ethylcellulose fibrous mats (Triamcinolone/Gliadin/Ethylcellulose). Then, the chemical structure, thermal stability, mechanical properties, and morphology of Triamcinolone/Gliadin/Ethylcellulose fibrous mats were evaluated by Fourier Transform Infrared Spectroscopy, thermal gravimetric analysis (TGA), Tensile stress analysis, and scanning electron microscopy, respectively. Moreover, the biocompatibility, anti-inflammatory, and antioxidative effects of these fibrous mats were evaluated on human gingival fibroblasts. The results of SEM confirmed the uniform structure of the fabricated fibrous mats. The mechanical strength and the thermal stability of fibrous mats containing Triamcinolone were improved compared with Gliadin/Ethylcellulose fibrous mats. In vitro analysis showed the non-cytotoxicity of these fibrous mats on HGFs. Moreover, expression levels of TNF α and IL 6 in fabricated mats were 0.995 pg/mL and 0.44 pg/mL, which were significantly less than the control group. Also, the measurement of ROS activity showed significant decreases in stimulated HGFs. According to these results, it seems that the Triamcinolone/Gliadin/Ethylcellulose would be a practical mat for application in the treatment of oral inflammatory ulcers.
研究领域:
材料科学
·
药剂学
·
生物医学工程
·
牙科材料
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2023
·Vol. 11
·期 33
·8046-8055
·
IF 7
Yujie Gao,Wenxiang Pei,Yang Yang,Mengmeng Li,Hengqiu Sun,Mingchao Chen,Xiaoman Ma,Hui Zhang,Dongming Qi,Jindan Wu
In most circumstances, wounds face the challenges of bacterial invasions and inappropriate inflammatory responses when they lack proper wound management. Endowing dressings with both antibacterial and anti-inflammatory functions is a compelling strategy for resolving the above issues. However, seizing the right moment to change the dressings and providing satisfactory management of wounds are still urgently required. Herein, an antibacterial and anti-inflammatory nanofibrous mat is proposed by encapsulating antibiotic gentamicin sulfate (GS) and anti-inflammatory drug ibuprofen (IB) into nanofibers via a coaxial electrospinning technique and is further decorated with Prussian blue nanocrystals (PBNCs) to enhance anti-inflammatory activity and, more importantly, to monitor bacterial infections and guide dressing changes in a timely manner. Such a nanofibrous mat releases most of the therapeutic drugs within 120 min and reveals excellent antibacterial activity and anti-inflammatory ability. Specifically, it can destroy both Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli), as well as conspicuously reduce the production of reactive oxygen species (ROS) and the expression of pro-inflammatory cytokines in macrophages. In addition, the nanofibrous mat can be used for point-of-use diagnosis of living bacteria relying on the naked eye or color analysis, which exhibits the potential of monitoring wound infection and guiding dressing changes promptly. This finding demonstrates the theranostic applications of multifunctional nanofibrous mats in wound healing.
研究领域:
材料科学
·
纳米技术
·
生物医学工程
·
药剂学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2022
·Vol. 18
·期 13
·2107156
·
IF 15.153
Xiangyang Dong,Hao Li,Lingfei Gao,Chaoji Chen,Xiaowen Shi,Yumin Du,Hongbing Deng
Solar desalination has been recognized as an emerging strategy for solving the pressing global freshwater crisis. However, salt crystallization at the photothermal interface frequently causes evaporator failure. In addition, arbitrary discharge of concentrated brine produced during desalination results in potential ecological impacts as well as wastage of valuable minerals. In the present work, a suspended-type evaporator (STEs) constructed using Janus fibrous mats is reported. The fibrous structure wicks brine to the evaporation layer and the salt gets confined in the evaporation layer until crystallization for zero liquid discharge due to the suspended design. Enhanced evaporation is observed because STEs have an additional low-resistance vapor escape path directly from the evaporation layer to the atmosphere compared to traditional floating Janus evaporators. Moreover, owing to the drastically different wettability on both sides, the evaporator allows salt crystallization only on the hydrophilic bottom layer, thus eliminating salt accumulation at the hydrophobic photothermal interface. With this unique structural design, the proposed evaporator not only maintains a high evaporation rate of 1.94 kg m –2 h –1 , but also demonstrates zero liquid discharged salt resistance and ideal recovery of the mineral in brine.
研究领域:
环境科学
·
材料科学
·
水资源工程
·
太阳能
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Kun Feng,Chen Li,Yun-Shan Wei,Min-Hua Zong,Hong Wu,Shuang-Yan Han
Advances in pharmaceutical technology have promoted the development of colon-targeted delivery system for oral administration of bioactive peptides or proteins to enhance their bioavailability. In this study, a multi-unit nanofiber mat was fabricated by coaxial electrospinning and its feasibility as the colon-targeted delivery system for a bioactive peptide, salmon calcitonin (sCT), was investigated. Sodium alginate and sCT-loaded liposome coated with pectin served as the shell layer and core layer, respectively. An in vitro study demonstrated that the encapsulated sCT was released in a sustained and colon-targeted way. Analysis using different mathematical models showed that release followed a complex mechanism. In addition, greater amounts of sCT were released from the core-shell nanofiber mat into simulated colon fluid (SCF) than was released from a uniaxial nanofiber mat (65.2% vs. 47.8%). The use of a core-shell nanofiber mat further alleviated the burst release of sCT into simulated gastric and intestinal fluid (SGF and SIF), demonstrating the superiority of a multi-unit vehicle for colon-targeted delivery of sCT. Furthermore, 88% of the bioactivity of encapsulated sCT was retained. This multi-unit vehicle offers a better-designed vehicle for the colon-targeted sustained release of bioactive peptides or proteins and, thus, should improve oral bioavailability.
研究领域:
药剂技术
·
纳米技术
·
药物递送系统
·
生物药剂学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2017
·
IF 4.811
Sainan Chen,Sisi Cui,Junli Hu,Yifa Zhou,Yichun Liu
Polysaccharides including pectin, alginate and chitosan are fabricated into dressings of micrometer-scaled architecture (micro- fiber or particle) and widely applied in wound treatments clinically. This work characterized and compared the properties of electrospun nanofibrous dressings of these polysaccharides. We found that although the three polysaccharide nanofiber mats had comparable mechanical strength and vapour permeability, the pectinate nanofiber mat could absorb 1.2 times and 3.6 times more exudates than the alginate and chitosan nanofiber mats, respectively, within less time. Moreover, the pectinate nanofiber mat showed much higher antibacterial activity (73.1%) than the alginate and chitosan nanofiber mats (11.8% and 17.1%, respectively). Further examinations demonstrated that the superior absorbency and antibacterial activity of the pectinate nanofiber mat were associated with the moderate extent of swelling of pectinate nanofibers under hydrated conditions. All these results suggest that the pectinate nanofiber mat might be a superior wound dressing to the alginate and chitosan nanofiber mats.
研究领域:
生物材料
·
伤口愈合
·
纳米技术
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Jinzhi Shi,Kai Shi,Qi Dong,Junfeng Yang,Yingshan Zhou,Peng Ma,Sha She,Fan Yang,Zuojiong Gong
Enriching erythrocytes and platelets in seconds and providing a fast seal in bleeding sites is vital to fatal hemorrhage control. Herein, hydrophilic chitosan fibrous mats (CECS-D mats) are fabricated by introducing hydrophilic carboxyethyl groups and subsequent catechol groups onto chitosan fibers. Due to strong hydrophilicity, CECS-D mats exhibit rapid liquid-absorption capacity, especially instantaneous absorptivity to the rabbit blood, which can achieve erythrocyte and platelet aggregations quickly by concentrating blood, thus promoting the formation of blood clots. Furthermore, the mats are self-oxidated to form quinone-amine adducts or quinone multimers by adjusting pH conditions, which not only provides tissue adhesion but also induces erythrocyte aggregation and platelet adhesion, further enhancing the seal and triggering quick closure to achieve fast hemostasis. Therefore, the mats reveal superior hemostatic performance in rabbit liver and spleen models over CECS mats and gauze. Especially in the fatal femoral artery injury model of rabbits, the mats reduce the blood loss by ∼75% and shortened the bleeding time by ∼50% compared with CECS mats, which have been reported to have the same hemostatic effect as commercialized Celox products in a swine femoral artery injury model. Besides, the mats are cytocompatible and degradable as well as antibacterial. This chitosan mat is a promising hemostatic material for fatal hemorrhage control.
研究领域:
生物材料
·
止血
·
组织工程
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）