GREEN CHEMISTRY
·
2025
·Vol. 27
·期 8
·2319-2330
·
IF 9.2
Yamei Zao,Muqiu You,Jieru Ma,Xiaoyu Du,Yongcan Jin,Dagang Li,Zhaoyang Xu,Chuchu Chen
Hydrogels are promising flexible substrates, yet their applications are always limited by their inferior mechanical robustness and lack of multifunctionality. Herein, inspired by flexible and robust molting crab shells, multifunctional ChMNF–PAA–ACC (CPA) hydrogels were developed by constructing a three-dimensional chitin micro-nanofiber (ChMNF) network with a layered structure, incorporated into an amorphous inorganic-based hybrid matrix of nano-segregated minerals (amorphous calcium carbonate, ACC) and protein-like acrylic acid (PAA) polymers. This preparation process enables a green and mild synthesis, employing sustainable ChMNF and ACC as biodegradable and biocompatible raw materials, with no need of complex treatments or costly functional agents. The resulting CPA hydrogels simultaneously feature high strength (∼28.6 MPa), optical clarity (high transmittance: ∼88.1%, low haze: ∼1.86%), good drying–swelling recycling properties, and intrinsic fluorescence and electrical conductivity, surpassing performances of most chitin fiber-reinforced gel materials. Owing to these merits, these CPA hydrogels can be assembled into multifunctional sensors to detect diverse external stimuli (such as strain, pressure, and temperature). Consequently, this dual bionic strategy provides an exciting idea for designing multifunctionally robust and transparent hydrogels, showing promising and sustainable potential in the application of flexible sensors.
研究领域:
材料科学
·
生物医学工程
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2024
·Vol. 28
·期 8
·2515-2530
·
IF 2.6
Liu Cansen,Tai Xiaoming,Xu Jianyu,Xie Huisi,Li Jinyan
Rubber tire mold fouling is a severe problem leading to mold surface corrosion, tire defects, and extra energy consumption. Traditional mechanical and chemical cleaning is inefficient and induces mold surface damage. Low surface energy organic coating displays antiadhesive behavior but is susceptible to wear. Here, we develop a bioinspired Co-CeO 2 /MoS 2 coating with effective mechanical robustness, corrosion resistance, and antifouling behavior by leveraging a slippery liquid-infused surface (SLIPS) strategy. The micro-nanostructure of the coating serves as mechanical stability and anticorrosion skeleton with the infused lubricant acting as a slippery antifouling surface. The variation of microstructure, mechanical strength, corrosion resistance, and antifouling behavior of the coating with individual and synergistic addition of CeO 2 and MoS 2 is systematically characterized. The slippery Co-CeO 2 /MoS 2 coating shows excellent mechanical stiffness, corrosion resistance, and antifouling performances in rubber vulcanization conditions. Graphical abstract
研究领域:
材料科学
·
防腐蚀工程
·
生物仿生学
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE FORUM
·
2016
·
IF 0
Chag Ku Ding,Jing De Zhang,Ya Lei Liu,Jin Yan Gou,Jun Peng Luan
A comparative study has been carried out on the effects of pore-forming agents on the microstructural characteristics and properties including porosity, microstructures, linear sintering shrinkage and mechanical strength of NiO/yttria stabilized zirconia (YSZ). Different pore-forming agents (soluble starch, graphite and activated carbon) were incorporated into NiO/YSZ at various mass mixing ratios (5%, 10% and 15%). The experimental results show that under the condition of same content, sintered samples using activated carbon as pore-forming agent had a higher porosity than that with identical content of the other two kinds of pore-forming agents. Sintered samples with 10.0 wt% activated carbon had a porosity of 35%. Section morphologies show that pores distributed uniformly and connected very well in the anode with activated carbon as pore-forming agent. The mechanical strength of these sintered samples with carbon as pore-forming agent was also higher. With the activated carbon particle size decreasing (from 100 mesh to 320 mesh), the open porosity of porous NiO/YSZ was reduced (from 31.7% to 30.9%). It may be concluded that The activated carbon is the better choice as pore-forming agent for NiO/YSZ anode.
研究领域:
材料科学
·
燃料电池研究
✓ 已验证
DOI
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Pengyun Tan,Xiaotong Zhao,Zengshuai Zhang,Wuji Wei,Jiahao Zhou,Yingqing Shao,Xiaojing Ma,Shuangying Wei,Zhenhua Gao,Shuaiyuan Han
Self-healing materials are the current focus of smart materials research. However, the implementation of self-healing materials remains limited by the challenge of balancing efficient healing properties with high mechanical strength. In this study, N,N′-(4-hydroxy-3-methoxybenzyl) aniline (VPSB) with π–π conjugated structures were prepared by introducing Schiff base bonds between aromatic rings. VPSB is then incorporated into the polyurethane system to synthesize a self-healing waterborne polyurethane vitrimer (VPSB-WPU) containing conjugated aromatic Schiff base bonds. This locally conjugated structure can convert absorbed visible light into thermal energy, which promotes the rapid breaking and formation of Schiff base bonds, resulting in an improved self-healing effect. The results indicated that the topological network of the vitrimer exhibited an activation energy (Ea) of 60.69 kJ/mol and a freezing transition temperature (Tv) of 45.46 °C. After 3 min of visible-light irradiation, the film temperature increased from 6.4 to 91.5 °C, with a photothermal conversion efficiency of 92.13% and a film scratch-healing efficiency of 93.75%. After 25 min of irradiation, the fractured film’s tensile strength after healing was 11.57 MPa. These results demonstrated that VPSB-WPU exhibited vitrimer properties and possessed excellent mechanical strength, photothermal conversion, and self-healing function. A balance between highly efficient healing properties and excellent mechanical strength was achieved by the VPSB-WPU vitrimer, making it highly promising for future applications in material self-healing.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Xin Li,Haichao Li,Xiaoyu Wang,Duxin Xu,Tingting You,Yuying Wu,Feng Xu
Nano-ZnO were in situ prepared and permanently embedded in regenerated cellulose (RC) films by chemical precipitation to endow antibacterial of films and simultaneously strengthen tensile strength . ZnCl 2 was selected as a promoter of 1-allyl-3-methylimidazolium chloride for cellulose dissolution and as a precursor for nano-ZnO synthesis. Zn 2+ -absorbed cellulose solution was reacted with NaOH under ultrasonic to obtain nano-ZnO embedded RC films. The results indicated that RC films treated with the longest sonication time, highest regeneration solution basicity, and highest cellulose concentration were demonstrated to be the most effective against S. aureus , which agreed well with the dense and homogeneous distribution of high content of nano-ZnO on the film surface. The nanocomposite films achieved particularly high mechanical strength of 202.0 MPa with improved thermal stability . Strong H-bonding formed between nano-ZnO and cellulose, which contributed to high tensile strength and thermal stability of films. This work affords a simple approach to prepare cellulose nanocomposite with outstanding performance for potential application in packaging.
研究领域:
材料科学
·
生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2020
·
IF 4.469
Zhongfeng Ji,Yong Liu,Fanglin Du
A mechanically robust, transparent, solvent-free, and self-cleaning coating (GPMS-DTDA/PFTS) was fabricated based on the co-hydrolysis/condensation of the Dibutyltin dilaurate, N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (curing agent), while the different amount of 1H,1H,2H,2H-Perfluorodecyltrimethoxysilane were added to the system to reduce the surface energy of the coating. The morphology and properties of the polysiloxane-based coating were characterized by SEM, FTIR, UV–vis-NIR. The as-synthesized GPMS-DTDA/PFTS-based coating displays excellent performance with the hardness of 8H, superior adhesion (5B), high transmittance (95.2 %), hydrophobicity (CA: 107°) as well as outstanding properties of self-cleaning and weather resistance.
研究领域:
材料科学
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Qin Zhang,Xin Liu,Lijie Duan,Guanghui Gao
With increasing interest and demand for wearable sensor devices, fabricating a flexible hydrogel sensor combining high toughness and adhesiveness is necessary but remains challenging. In this work, inspired by the delamination structure of skin, an ultra-stretchable wearable hydrogel strain sensor with double layers is successfully prepared via in-situ polymerization of nucleobase-driven adhesive hydrogels on the surface of conductive tough hydrogels crosslinked by hydrophobic association. The hydrogel exhibits ultra-stretchability, high mechanical strength, and robust adhesion to various solid materials as well as skin. Furthermore, the hydrogel also exhibits high strain sensitivity and stability as a flexible and wearable strain sensor to detect large-range human motions and tiny physiological signals. Notably, the adhesive layer not only ensures a robust adhesion between the sensors and skin, but also protects skin from current harm when the hydrogels contact with skin directly, because of effectively blocking the current from the conductive tough layer. It is envisioned that the skin-inspired strategy would provide novel inspiration for the development of hydrogel strain sensors.
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
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 39
·22296-22306
·
IF 10.733
Ying Xu,Hongbo Xu,Zhigao Zhu,Haoqing Hou,Jinlong Zuo,Fuyi Cui,Dongmei Liu,Wei Wang
So far, solar distillation based on photothermal membranes has attracted ever-increasing attention in less developed regions for water purification. The raw water resources for solar evaporation were generally beyond the natural hydrological cycle and are highly saline and corrosive. In this process, a core–shell structured PDA/PEI/PPy@PI nanofibrous membrane (NFM), comprising a robust PI nanofibrous substrate, PPy photothermal layer and anticorrosion PDA/PEI layer, was developed as a photothermal membrane, which exhibited broadband solar absorption (93.0%) and sustained anti-corrosion capacity for 30 days. Besides, the core–shell structure can effectively prevent the swelling of the membrane and maintain excellent mechanical strength even in the wet state. An evaporation system based on the PDA/PEI/PPy@PI NFM achieved a high solar evaporation rate of ≈1.43 kg m−2 h−1, corresponding to a light-to-vapor efficiency of ≈86.9% under 1 sun illumination. Due to its sustained corrosion-resistance, mechanical durability in the wet state and high solar evaporation capacity, this NFM is expected to have great potential for long-term solar distillation applications.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2021
·Vol. 12
·期 1
·1-10
·
IF 14.919
Wang Yuyan,Huang Xin,Zhang Xinxing
Self-healing materials integrated with excellent mechanical strength and simultaneously high healing efficiency would be of great use in many fields, however their fabrication has been proven extremely challenging. Here, inspired by biological cartilage, we present an ultrarobust self-healing material by incorporating high density noncovalent bonds at the interfaces between the dentritic tannic acid-modified tungsten disulfide nanosheets and polyurethane matrix to collectively produce a strong interfacial interaction. The resultant nanocomposite material with interwoven network shows excellent tensile strength (52.3 MPa), high toughness (282.7 MJ m ‒3 , which is 1.6 times higher than spider silk and 9.4 times higher than metallic aluminum), high stretchability (1020.8%) and excellent healing efficiency (80–100%), which overturns the previous understanding of traditional noncovalent bonding self-healing materials where high mechanical robustness and healing ability are mutually exclusive. Moreover, the interfacical supramolecular crosslinking structure enables the functional-healing ability of the resultant flexible smart actuation devices. This work opens an avenue toward the development of ultrarobust self-healing materials for various flexible functional devices.
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
MACROMOLECULAR RAPID COMMUNICATIONS
·
2014
·Vol. 35
·期 7
·741-746
·
IF 4.608
Shijun Long,Shuguang Bi,Yonggui Liao,Zhigang Xue,Xiaolin Xie
To achieve a fast photochromic response in solid matrix, photochromic molecules/segments have been either dispersed into elastomers via physical doping or linked to glassy polymers by soft units through covalent bonding. However, the former is lack of high mechanical strength and the latter owes the drawback of time-consumption of synthesis. Here, we propose a facile strategy of co-solvent evaporation to prepare polymer-dispersed photochromic organogel where both high mechanical strength of the glassy polymer matrix and solution-like fast photochromism of the photochromic molecule within organogel can be retained concurrently. Glassy PVA matrix and dispersed organogel of 1,3:2,4-di- O -benzylidene- d -sorbitol/poly(propylene glycol) (DBS/PPG) provide high mechanical strength and sufficient free volume for intramolecular rotation of photochromic spiropyran (SP), respectively. Interestingly, these thin films behave a solution-like decoloration the decay rate of which is 65–70 fold faster than that in the SP-directly doped PVA film and only slightly slower than those in their corresponding PPG solutions.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2019
·
IF 5.162
Jie Du,Wen-Cui Li,Zhan-Xin Ren,Li-Ping Guo,An-Hui Lu
Porous carbon materials with developed porosity, high surface area and good thermal- and chemical-resistance are advantageous for gas adsorption and separation. However, most carbon adsorbents are in powder form which exhibit high pressure drop when deployed in practical separation bed. While monolithic carbons have largely addressed the pulverization problem and preserved kinetics and usually suffer from abrasion during multiple adsorption-desorption cycles. Herein, we proposed the designed synthesis of mechanically robust carbon monoliths with hierarchical pores, solid nitrogen-containing framework. The synthesis started with the polymerization of resorcinol and formaldehyde under weakly acidic conditions generated from cyanuric acid, and then an appropriate amount of hexamethylenetetramine (HMTA) was added as a crosslinker to prompt the formation of three dimensional frameworks. After carbonization process, the as-obtained porous carbon monoliths have a high radial compressive strength of 886 N/cm as well as a BET specific surface area of up to 683 m 2 /g. At approximately 1 bar, the CO 2 equilibrium capacities of the monoliths are in the range of 3.1–4.0 mmol/g at 273 K and of 2.3–3.0 mmol/g at 298 K, exhibiting high selectivity for the capture of CO 2 over N 2 from a stream which consists of 16.7% (v%) CO 2 in N 2 . Meanwhile, they undergo a facile CO 2 release in an argon stream at 298 K, indicating a good regeneration capacity. After cycle testing, sieving and regeneration, the adsorbent has no mass loss, compared to that of its fresh counterpart.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Fangwei Guo,Dong Su,Yang Liu,Jianming Wang,Xiao Yan,Jing Chen,Shunquan Chen
Tailoring the pore structures of ceramic membranes is the essential challenge in its application for wastewater treatment. In this paper, silicon oxycarbide (SiOC) ceramic membranes with tunable pore structures are fabricated by coating polysiloxanes (PSO) onto YSZ hollow fiber membranes followed with subsequent pyrolysis. The SiOC ceramics, with a pore size in the range of 50 nm-2 µm and porosity of 35–40%, have been obtained by varying the pore forming agents. Moreover, the SiOC layers endow the fiber membranes with high corrosion resistance regarding merely 0.07 wt% weight loss in 20 wt% H 2 SO 4 solution, since that the unique silicon oxycarbide microlattice structures can provide remarkable chemical durability. Together with considerable mechanical strength and pure water permeate flux, such SiOC ceramic membranes should find applications in industrial wastewater treatment.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）