ACS Applied Polymer Materials
·
2024
·
IF 4.4
Xiaowei Xing,Xiaoyu Zhang,Md Arif Saleh Tasin,Xiaoping Liang,Hua Zhou,Haitao Niu
Electrospun nanofiber-based waterproof and breathable membranes (WBMs) that can provide a high level of protection and excellent air permeability and functionality are becoming promising core materials in numerous fields. However, large challenges still remain in the facile preparation of high-performance and smart WBMs capable of forecasting the failure of waterproof protection. Herein, amphiphobic TPU/PVDF-HFP nanofiber membranes with an interlaced fibrous structure are prepared by a one-step multineedle electrospinning technology. The obtained membranes demonstrate outstanding waterproofness with a hydrostatic pressure of over 108 kPa, a high air permeability of over 10 mm s–1, and a water vapor transmission rate (WVTR) of 8.40 kg m–2 d–1, as well as excellent mechanical properties with a tensile strength of 6.07 MPa and a tensile strain of 117.11%. These make them extremely suitable for WBM applications. More importantly, due to the robust interlaced fibrous structure and the piezoelectric property of PVDF-HFP, the hydrostatic pressure of the TPU/PVDF-HFP membranes can be easily monitored and predicted by measuring the voltage output, indicating excellent hydrostatic pressure monitoring capability. The addition of low-surface-energy chemical materials endows the membranes with durable amphiphobicity against various harsh conditions, which further enhances the waterproof property. Such versatile nanofiber membranes would be desirable for potential applications in protective clothing and wearable electronic products and would provide a source of inspiration for the fabrication of smart WBMs.
研究领域:
材料科学
·
纺织工程
·
智能材料
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2024
·Vol. 16
·期 22
·3140
·
IF 4.7
Yan Chen,Jianying Hu,Xiaonan Wu,Shaochan Duan,Hongyu Wang,Tao Ma
Service life of traditional steel bridge deck pavement is significantly shortened due to the failure of waterproof adhesion. To improve the interlayer bonding performance and extend its service life, polyurethane is proposed as a waterproof adhesion layer (WAL) for a steel bridge deck. This study aims to synthesize polyurethane WAL by free radical solution polymerization under different types and dosages of crosslinking agents as well as the mixing ratio of an acrylic co-blend. Tensile properties, water resistance, glass transition temperatures, thermal stability, and adhesive strength of the polyurethane binder are evaluated. The results demonstrate that polyurethane WAL yields desirable performance by using a hydroxyl molar ratio of 1/3 and an acrylic co-blend of 65%. Specifically, the tensile strength and breaking elongation of polyurethane WAL reach the maximum values of 6.466 MPa and 268.4%, respectively. The water absorption rate of polyurethane WAL is less than 4%. Glass transition temperatures of polyurethane WAL are between −80 °C and 60 °C, respectively. Polyurethane WAL features remarkable high- and low-temperature performance and thermal stability. Finally, adhesion strength between polyurethane WAL and the steel plate reaches up to 5.21 MPa. The outcome of this study facilitates the design and application of polyurethane waterproofing adhesion layers for steel bridge decks.
研究领域:
土木工程
·
材料科学
·
桥梁工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
THERMOCHIMICA ACTA
·
2023
·
IF 3.5
Wentao Hao,Qiannan Zheng,Xiang Zhang,Yuqing Li,Longzhen Qiu,Hongbo Lu,Wenping Wang,Wen Yang
For its biodegradability, renewability and sustainability, polylactic acid (PLA) fabrics are of great interests to replace the petroleum based, non-degradable textiles. However, their flame retardancy and water repellency need to be improved to be applied in household decoration, car interior, or protective clothing, etc. to make them safe and self-cleaning. Herein, PLA fabrics with improved flame retardancy and water repellency were produced by co-electrospinning PLA with DiDOPO, a derivative of 6H-dibenz(C,E)(1,2)oxaphosphorin-6-oxide (DOPO). The experimental results showed that the DiDOPO could have good protection for the PLA fabrics. More specifically, it had better protection to the fabrics than the bulk PLA during combustion. Furthermore, the PLA/DiDOPO electrospun fabrics showed improved water repellency compared to the pristine PLA fabric. It was found that the strength and toughness of PLA/DiDOPO electrospun fabrics were elevated too.
研究领域:
材料科学
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Wu Bin Ying,Zhe Yu,Do Hwan Kim,Kyung Jin Lee,Han Hu,Yiwei Liu,Zhengyang Kong,Kai Wang,Jie Shang,Ruoyu Zhang,Jin Zhu,Run-Wei Li
A stretchable electronic skin (e-skin) requires a durable elastomeric matrix to serve in various conditions. Therefore, excellent and balanced properties such as elasticity, water proof capability, toughness, and self-healing are demanded. However, it is very difficult and often contradictory to optimize them at one time. Here, a polyurethane (BS-PU-3) containing a polydisperse hard segment, hydrophobic soft segment, and a dynamic disulfide bond was prepared by one-pot synthesis. Unlike the normal two-pot reaction, BS-PU-3 obtained through the one-pot method owned a higher density of self-healing points along the main chain and a faster self-healing speed, which reached 1.11 μm/min in a cut-through sample and recovered more than 93% of virgin mechanical properties in 6 h at room temperature. Moreover, a remarkable toughness of 27.5 MJ/m3 assures its durability as an e-skin matrix. Even with a 1 mm notch (half of the total width) on a standard dumbbell specimen, it could still bear the tensile strain up to 324% without any crack propagation. With polybutadiene as the soft segment, the shape, microstructure, and conductivity in BS-PU-3 and BS-PU-3-based stretchable electronics kept very stable after soaking in water for 3 days, proving the super waterproof property. An e-skin demo was constructed, and self-healing in pressure sensitivity, mechanical, and electrical properties were verified.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2022
·
IF 9.463
He Huang,Changqing Hong,Xiangyu Jin,Can Wu,Wei Wang,Hebing Wang,Yiwu Pan,Shiqi Wu,Xiaojie Yan,Wenbo Han,Xinghong Zhang
Aerogels still draw enormous interests of researchers to address the thermal insulating solutions due to environmental and energy challenges. To design and obtain lightweight organic aerogels with flexibility, thermal insulation, and hydrophobicity is one of the future directions. Herein, taking advantage of a 3D silicone framework as the backbone, a set of flexible phenolic aerogels with hierarchical architectures were fabricated by a facile one-pot and ambient pressure drying strategy. The intriguing microstructure afforded the aerogel composites multiple remarkble properties: highly-flexibility with high cyclic compressibility (70 % strain) and 1000 cycles of compression without collapse (40 % strain); excellent thermal insulating performace (insulate 126 °C at 200 °C with a thickness of 10 mm); instantaneous flame retardancy within 2 min; impressive hydrophobicity with high water contact angle of 148.5° and low sliding angle less than 6°. These integrited merits enable the composite aerogels to perform effectively in thermal management applications for long-term.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2023
·Vol. 15
·期 9
·2076
·
IF 5
Hongping Zhang,Pengfei Tang,Youhong Tang,Kun Yang,Qingyuan Wang
The penetration of external stimuli (microorganisms, ions, etc.) following to the pore is the key reason for the deterioration of cement and concrete structures. Although the traditional methods such as improving the chemical composition of cement and concrete materials can delay the erosion rate, the inevitable pore structure still makes its deterioration a challenge. Based on this, we reported a protective coating for cementitious materials based on phenol and Ti3C2MXene-modified polyacrylate (MXene-PG/PA). The introduction of phenols enhanced the waterproof properties of polyacrylate by increasing the interaction among molecular chains. Moreover, the introduction of Ti3C2MXene also endows the MXene-PG/PA coating with good light-induced antimicrobial properties. Beneficial to these designs, the MXene-PG/PA coating exhibited good waterproof properties (the water absorption ratio in seawater decreased by 58.2%) and antimicrobial properties (inhibition ofE. coliandS. epidermidisactivity under light). These results not only confirm that the MXene-PG/PA coating is a potential candidate of protective coating for cement-based materials, but also provide a new strategy for the design of multifunctional protective coatings.Keywords:protection coating;Ti3C2MXene;waterproof;antimicrobial;cement-based materials
研究领域:
材料科学
·
环境工程
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Cong Jiang,Jiaming Wu,Hong Wang,Yehan Tao,Jie Lu,Jinwen Hu,Jian Du,Haisong Wang
Biodegradable cellulosic mulch has been demonstrated as the promising alternative to traditional plastic mulch film in agriculture, whereas the highly hydrophilic property and poor wet strength severely restricted their practical application. Herein, a new waterproof dialdehyde cellulose (OR)-polyamide epichlorohydrin (P)-alkyl ketene dimer (A) (OR-P-A) was carefully designed as the green mulch film. The hydrogen bonds and Schiff base reaction between -CHO on dialdehyde cellulose fibers and -NH 2 on PAE reinforced the interfacial interaction of cellulosic fibers. Furthermore, the formed β -keto ester bonds of -OH on cellulose with AKD improved the water resistance of paper fiber. Compared with the pristine cellulose film, the dry and wet tensile strength of OR-P-A 2 were increased to 17 MPa and 3 MPa, respectively. Moreover, the water contact angle was increased from 25° for pristine cellulose film to 124° for OR-P-A 2 . In addition, the germination rate of cabbage seeds covered by OR-P-A 2 was similar to that of commercial polyethylene film in practical application. This strategy proposed a novel method to improve the hydrophobicity of cellulose film, which boosting the development of biodegradable mulch film and “green” agriculture.
研究领域:
材料科学
·
农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymers
·
2019
·Vol. 11
·期 5
·786
·
IF 3.164
Xu Yan,Guo-Sai Liu,Jing Yang,Yi Pu,Shuo Chen,Hong-Wei He,Conger Wang,Yun-Ze Long,Shouxiang Jiang
Paper-based relics, which are an important part of cultural heritage worldwide, are at risk of imminent damage from various environmental sources. To protect them, the atmospheric pressure plasma polymerization of hexamethyldisiloxane (HMDSO) precursor has been explored on paper-based relics in situ. The macro and micro images taken during this process suggest that the in situ plasma treatment does not change the macro morphology and the micro structure of the treated paper-based relic samples. On the other hand, plasma treatment causes the polymerization of the HMDSO which then produces nanoparticles deposited onto the paper-based relics. These nanoparticles provide good waterproof properties with large static water contact angles and smaller rolling angles, which protect the paper-based relics from water penetration. Moreover, since the nanoparticles are deposited onto the fibers, waterproof fastness is ensured. Also, the examined mechanical properties of the treated and untreated paper-based relics indicate that the atmospheric pressure plasma treatment does not affect the strength of the paper very much. The results in this study show that atmospheric pressure plasma treatment with the use of HMDSO precursor is a good method to preserve paper-based relics.Keywords:plasma treatment;paper-based relics;waterproofing;preservation
研究领域:
文物保护
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale Advances
·
2021
·Vol. 3
·期 9
·2475-2480
·
IF 4.553
Zhihui Tian,Heshan Zhang,Fei Xiu,Minjie Zhang,Jiahao Zou,Chaoyi Ban,Yijie Nie,Wenjie Jiang,Bin Hu,Juqing Liu
Electronic textiles (e-textiles) typically comprise fabric substrates with electronic components capable of heating, sensing, lighting and data storage. In this work, we rationally designed and fabricated anisotropic light/thermal emitting e-textiles with great mechanical stability based on a sandwich-structured tri-electrode device. By coating silver nanowire network/thermal insulation bilayer on fabrics, an anisotropic thermal emitter can be realized for smart heat management. By further covering the emissive film and the top electrode on the bilayer, light emitters with desirable patterns and colors are extracted from the top surface via an alternative current derived electroluminescence. Both the light and thermal emitting functions can be operated simultaneously or separately. Particularly, our textiles exhibit reliable heating and lighting performance in water, revealing excellent waterproof feature and washing stability.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 13
·4177
·
IF 4.927
Yujian Zhang,Kuanjun Fang,Wei Wang,Haitao Niu
With the ever-growing concern about environmental conservation, green production and water-based nanofibers have attracted more and more interest from both academic and industrial fields; nevertheless, the stabilization process of water-based nanofibers is primarily relying on the application of organic solvent-based crosslinking agents. In this work, we develop a green approach to fabricate water-resistant polyvinyl alcohol (PVA) nanofibers by using a water-based epoxy compound, N1, N6-bis(oxiran-2-ylmethyl) hexane-1,6-diamine (EH), as the crosslinker. This EH/sodium carbonate/sodium bicarbonate (CBS) solution system can break down large aggregates of PVA molecules into small ones and promote the uniform distribution of EH in the solution, resulting in the improved stability of crosslinked PVA nanofibers. We firstly report that the uniform dispersion of crosslinking agents in the electrospinning solution plays a vital role in improving the stability of spinning solutions and the water resistance of crosslinked PVA nanofibers by comparing crosslinking performances between water-based epoxy and conventional water-based blocked isocyanate (BI). This work could open up a novel strategy and green approach for the stabilization of water-based nanofibers.Keywords:crosslinking;electrospinning;epoxy;polyvinyl alcohol;water resistance
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhonghe Wei,Xiaodan Li,Xiaohong Cai,Xuqiang Zhuang
A wearable sensing device, it not only has good breathability to ensure long-term wearing comfort but also needs to have waterproof ability to avoid sweat erosion. However, most reported works only have breathability or waterproof ability, which greatly limits their application. Herein, we designed and fabricated a water-resistant and breathable sensor based on non-woven fabric via the simple methods of 3D direct writing and spray coating. The sensing principle of supercapacitive and the micro uneven structure of fibers endows the sensor with high sensitivity (77.19 kPa −1 ), wide detection range (0–65 kPa), fast response speed (within 50 ms), cycle stability (over 10,000 cycles). The stearic acid (STA) coating method enables the sensor with excellent hydrophobicity (water contact angle of about 160.9°) and waterproof ability that can work normally in humid environments and even underwater. Benefiting from the natural micropore structure of fibers, the sensor demonstrates excellent air permeability (359.4 mm s −1 ). As a result, the fabric-based sensor can monitor human motions, and physiological signals and recognize gestures in the normal open-air and underwater environment, demonstrating its huge potential in underwater applications.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-11
·
IF 16.6
Tian Tian,Yang Meifang,Fang Yuxuan,Zhang Shuo,Chen Yuxin,Wang Lianzhou,Wu Wu-Qiang
Lead halide perovskites show great potential to be used in wearable optoelectronics. However, obstacles for real applications lie in their instability under light, moisture and temperature stress, noxious lead ions leakage and difficulties in fabricating uniform luminescent textiles at large scale and high production rates. Overcoming these obstacles, we report simple, high-throughput electrospinning of large-area (> 375 cm 2 ) flexible perovskite luminescent textiles woven by ultra-stable polymer@perovskite@cyclodextrin@silane composite fibers. These textiles exhibit bright and narrow-band photoluminescence (a photoluminescence quantum yield of 49.7%, full-width at half-maximum <17 nm) and the time to reach 50% photoluminescence of 14,193 h under ambient conditions, showcasing good stability against water immersion (> 3300 h), ultraviolet irradiation, high temperatures (up to 250 °C) and pressure surge (up to 30 MPa). The waterproof PLTs withstood fierce water scouring without any detectable leaching of lead ions. These low-cost and scalable woven PLTs enable breakthrough application in marine rescue.
研究领域:
材料科学
·
光学工程
·
纺织科学
✓ 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）