Journal of Cleaner Production
·
2024
·
IF 9.7
Chengling Huang,Youjie Gao,Yi Chen,Yunfei Shen,Hou-Yong Yu
Earth has become depleted of oil and has suffered from the misuse of non-biodegradable plastics. Significant efforts have been dedicated to addressing the application flaws of cellulose as a substitute for plastics derived from petroleum. One of key defects was non-hydrophobic nature which highly influenced the mechanical properties of cellulose material during practical uses. Here, an innovative method was proposed to achieve hydrophobic modification of cellulose films through the molecular dissociation of dodecyltrimethoxysilane (DTMS) without the use of any toxic agents during the cellulose regeneration process. The hydrophobic (water contact angle of 118°), transparent (transmittance of 85%), and high-strength (70 MPa) DC films (cellulose films modified by DTMS) were successfully fabricated via cellulose regeneration process tailored by DTMS after molecular dissociation. The DC films stood out in both hydrophobicity and strength compared with several commercial plastics and the possible hydrophobic mechanism was proposed. Furthermore, the obsession with smart sensing abilities in DC films has made it a potential tool for monitoring baby diapers. Therefore, unlike conventional concepts, the methodology we adopted is simple and efficient, and it also eliminates the need for cellulose and replaces it with plastics.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
Polymers
·
2025
·Vol. 17
·期 16
·2179
·
IF 4.9
Zhiwen Hou,Yongzheng Li,Donghao Zhang,Cun Peng,Yan Wang,Kunyan Sui
Hydrogels exhibit significant promise for advanced flexible sensing applications owing to their intrinsic softness, biocompatibility, and customizable functionalities. Nevertheless, their limited mechanical strength poses a critical barrier to practical implementation. In this study, we engineered a mechanically robust alginate/chitosan (SA/CS) hydrogel reinforced with meta-aramid (PMIA) nanofibers. The resulting composite hydrogel achieves a tensile strength of 16.8 MPa, substantially exceeding the performance of conventional biomass-derived hydrogels. When employed as a flexible sensor, the hydrogel demonstrates exceptional pressure-sensing capabilities, featuring high sensitivity (178.41 MΩ/MPa below 5 kPa), rapid response kinetics (0.4–0.8 s), and sustained stability (>200 cycles). Leveraging these properties, we successfully monitored vocal cord vibrations and finger motion trajectories, highlighting their potential for biomechanical sensing applications.
研究领域:
生物医学工程
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材料科学
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柔性电子器件
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 40
·21379-21389
·
IF 14.511
Xi Lu,Yusheng Ye,Wenhui Shang,Simin Huang,Haifei Wang,Tiansheng Gan,Guokang Chen,Libo Deng,Qixing Wu,Xuechang Zhou
Conductive textiles are promising components for next-generation wearable electronics. However, it is still a challenge for current conductive textiles and wearable electronic devices to survive in harsh environments, such as extreme mechanical damages and low/high-temperature stresses. Herein, we report ultrastrong, flame-retardant, intrinsically weldable, and highly conductive metallized Kevlar fabrics (MKFs) fabricated via polymer-assisted electroless deposition (ELD) and electrodeposition (ED) techniques. The combination of ELD and ED techniques effectively metallizes the Kevlar fabrics, enabling ultrahigh conductivity (sheet resistance <0.007 Ω sq−1). More importantly, the deposited metal layers significantly enhance the anti-impact properties of Kevlar fabrics by 2–3 times. Due to the inherent properties of Kevlar and effective metal coatings, the MKFs maintain conductivity while suffering various mechanical damages (GPa-scale tensile strength, cutting, sticking, etc.), high temperatures (∼300 °C), and even flame stresses. Surprisingly, the MKFs show intrinsic weldability with traditional solder materials. The multifunctional applications of such high-performance metallized fabrics are demonstrated as textile-based conductors, heaters, and supercapacitors, all of which could survive in extremely harsh conditions.
研究领域:
材料科学
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纺织工程
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电子工程
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产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2024
·
IF 7.4
Hongyang Lian,Peisheng Li,Yantao Xu,Xiaochun Zhang
Bamboo is a sustainable, functional and rapidly growing natural material with excellent potential in sustainable building and industrial applications. However, as a structural material, bamboo is hindered by its low mechanical strength and poor mildew resistance. In this study, a simple and sustainable process was developed to partially remove lignin and hemicellulose from bamboo through alkaline pretreatment , combined with thermal mechanical compaction, to convert natural bamboo into a lightweight, high-strength, mildew resistant, and durable multifunctional structural material. The results showed that the comprehensive control effectiveness of the alkaline dense bamboo against Aspergillus niger , Penicillium citricola and Trichoderma viridis was 96.2%, the anti-mildew performance was significantly improved. Compared with natural bamboo, the flexural, tensile, and compressive strength of alkaline dense bamboo increased by 6.9 times, 2.5 times, and 4.6 times, respectively, reaching 578 MPa, 410 MPa, and 145 MPa. Compared with some synthetic structural materials with excellent mechanical properties, the alkaline dense bamboo also exhibited superior specific tensile strength and Shore hardness . The multifunctional alkaline dense bamboo prepared in this study provides the possibility for bamboo resources to be widely used in the field of structural engineering.
研究领域:
材料科学
·
林业工程
·
可持续发展
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DOI
高影响因子
ADVANCED MATERIALS
·
2024
·
IF 27.4
Hao Yan,Junsheng Wang,Cong Du,Zheng Li,Hua Yuan,Zhen Xu,Yeqiang Tan
The increasingly severe plastic pollution has urged an inevitable trend to develop biodegradable plastic products that can take over synthetic plastics. As one of the most abundant natural polymers, polysaccharides is an ideal candidate to substitute synthetic plastics. The rigidity of polysacchride chains principally allows high strength and stiffness of their materials, however, challenges the facile orientation in material processing. Here, a general hydrogen bond mediated plasticization strategy to regulate isotropic sodium alginate (SA) chains to highly ordered state is developed, and alginate plastics with high performances is fabricated. It is revealed that hydroxyl groups in glycerol modulate the viscoelasticity of SA solids by forming strong hydrogen bonds with SA chains, achieving a large stretchability at high solid content. Highly orientated alginate films exhibit superior tensile strength of 575 MPa and toughness of 60.7 MJ/m 3 , outperforming most regenerated biomass films. The high solid content and large stretchability mediated by strong hydrogen bonding ensure plastic molding of solid-like SA with high fidelity. This hydrogen bond mediated plasticity provides a facile but effective method to justify the high performances of polysaccharide-based plastics. This article is protected by copyright. All rights reserved
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
Journal of Asian Ceramic Societies
·
2020
·
IF 2.653
Mengmeng Yang,Jijia Li,Yiran Man,Zijun Peng,Xiaofang Zhang,Xudong Luo
A three-dimensional mullite-whiskers network ceramic with ultra-light weight and high-strength was obtained by the foaming gel-casting method with active mulllite powders and NH4F. Ultrafine active mullite powder was used as the raw material and SDS (sodium dodecyl sulfate) as a pore-forming agent. The effects of sintering temperature on the microstructure, flexural strength and thermal conductivity of the porous ceramics were systematically investigated. The mullite-whisker network porous ceramic has a fibrous-framework structure composed of interweaving mullite-whiskers. Because the pore-walls are composed of interlacing whiskers and the pores are filled with whiskers, the porous ceramics exhibited good mechanical properties and low thermal conductivity. The flexural strength of the obtained mullite-whisker porous ceramic sintered at 1500°C was up to 1.45 Mpa, while the porosity was as high as 89%. In addition, the thermal conductivity of the porous ceramic at room temperature was as low as 0.045 W/m⋅K.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2017
·
IF 4.811
Shuiping Wu,Hua Dong,Qingtao Li,Gang Wang,Xiaodong Cao
Hydrogels with good mechanical properties, excellent biocompatibility and designable shapes are of great importance for their biomedical applications. Herein, a series of high strength, biocompatible hydrogels have been synthesized by integrating sodium citrate into the thermally reversible chitosan/gelatin to form multiple physically crosslinking networks. Besides the ideal formability, a thermal etching or welding method has been developed to program the surface morphology and fabricate hydrogels with complicated shapes freely. More impressively, the special hollow “cup-shaped and tubular” structure has also been constructed by applying an interrupted gelation process in controlled ion crosslinking time and the subsequent dissolving process at 37 °C in deionized water. The high strength, biocompatible hydrogels with special internal and external shape adjustable characters, potentially useful in vascular repair and substitutes of cartilage, may further broaden our understanding of the plasticity of the hydrogels.
研究领域:
生物材料学
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组织工程学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2021
·
IF 5.039
Xiayun Zhang,Ting-Ting Li,Yuxiao Wang,Bing-Chiuan Shiu,Hao-Kai Peng,Ching-Wen Lou,Jia-Horng Lin
In order to prepare a new high-performance and flexibility stab-resistant composite material, one type of high-toughness and high-strength hydrogel is combined with aramid fabric. In this paper, the nanocomposite (NC) hydrogels are prepared using Pluronic F127 Diacrylate (PF127DA) as the crosslinking agent, acrylamide as the monomer and nano-silica as nano additive. The influence of the addition amount of nano-silica on the toughness and strength of nano-composite hydrogels is discussed. The strength and toughness of the NC hydrogels with nano silica are higher than that of the acrylamide hydrogel without nano particles. The NC hydrogel with the best strength is made as a composite with aramid fabric and the effect of nanocomposite hydrogel on the stab resistance of the stab-resistant composite material is studied. The research shows that the stab resistance performance of the composite material prepared by aramid fabric and nanocomposite hydrogel is effectively improved in comparison with aramid fabric, and the yarn pulling force is also improved. The composite material with high stab resistance can be used as the stab-resistant layer of armor, cut-resistant gloves and stab-resistant base material of shoes. This work provided a possibility for preparing a kind of lightweight composite material with high stab resistance.
研究领域:
材料科学
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Shuwei Cai,Ben Niu,Xinyu Ma,Songhan Wan,Xianru He
To develop high strength, anti-swelling, and sustainable hydrogels, acrylonitrile copolymer hydrogels are prepared based on the structural characteristics of microphase separation and physical crosslinking of thermoplastic elastomers. The hydrogel can be recycled and reprocessed into any desired shape and can withstand the maximum tensile stress of about 23 MPa, the maximum fracture energy is as high as 7592 J/m 2 . The hydrogels exhibit strain hardening behavior at low strain. In addition, the high strength can be maintained stably for more than 60 days in an aqueous environment and the hydrogel has pH-induced shape memory property. The hydrogel can be further strengthened by the introduction of zinc ions, and its toughness and elongation at break are greatly improved, which is mainly based on the dynamic balance between free zinc ions and conjunct zinc ions in the gel. In addition, the introduction of zinc ions also greatly improves the electrical conductivity of the gel. The strain sensor prepared by this gel has high sensitivity, good linear response, and stability, and is expected to be a promising candidate material for flexible electronic products and strain sensors.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
Biomaterials Science
·
2023
·Vol. 11
·期 8
·2877-2885
·
IF 6.6
Tengling Wu,Luxing Liu,Ziwei Gao,Chunyan Cui,Chuanchuan Fan,Yang Liu,Mingyuan Di,Qiang Yang,Ziyang Xu,Wenguang Liu
It has always been a huge challenge to construct high-strength hydrogels that are composed entirely of natural polymers. In this study, inspired by the structural characteristics of the extracellular matrix (ECM), gelatin and hydrazide alginate were employed to mimic the composition of collagen and glycosaminoglycans (GAGs) in the ECM, respectively, to develop natural polymer (NP) high-strength hydrogels crosslinked by physical and covalent interactions (Gelatin-HAlg-DN). First, HAlg and gelatin can form physically crosslinked hydrogels (Gelatin-HAlg) due to electrostatic and hydrogen bond interactions. Then, the Gelatin-HAlg hydrogels can be further covalently crosslinked in the presence of 1-(3-dimethylaminopropyl)-3-ethyl carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) to obtain Gelatin-HAlg-DN hydrogels. The obtained Gelatin-HAlg-DN hydrogels exhibit considerably enhanced mechanical properties (tensile strength: 0.9 MPa; elongation at break: 177%) with a maximum 16- and 3.2-fold increase in tensile strength and elongation at break, respectively, compared with gelatin methacrylate (GelMA) hydrogels. Importantly, the Gelatin-HAlg-DN hydrogels exhibit excellent biodegradability and swelling stability under physiological conditions, and the capability to support cell adhesion and proliferation. In a rat critical size bone defect model, Gelatin-HAlg-DN hydrogels loaded with psoralen could effectively promote bone regeneration, showing appealing potential as tissue engineering scaffolds.
研究领域:
生物材料学
·
组织工程学
·
再生医学
✓ 已验证
DOI
PubMed
高影响因子
ULTRASOUND IN MEDICINE AND BIOLOGY
·
2022
·
IF 3.694
Shifang Guo,Zhen Ya,Pengying Wu,Lei Zhang,Mingxi Wan
High-intensity focused ultrasound (HIFU) thrombolysis provides a targeted and non-invasive therapy for thrombosis-related diseases. Rapid thrombolysis and restoration of blood flow are vital to reduce the disability and death rate . The objective of this study was to explore the feasibility of using a high-intensity focused acoustic vortex (HIFAV) to enhance sonothrombolysis. The in vitro clots were treated with HIFU with a peak negative pressure (PNP) of 2.86 MPa (HIFU A) or 3.27 MPa (HIFU B) or HIFAV with a PNP of 2.14 MPa. The results revealed that HIFAV thrombolysis could achieve a significantly higher efficiency than HIFU (HIFAV: 65.4%, HIFU A: 24.1%, HIFU B: 31.6%, p < 0.01), even at a lower intensity. The average size of the debris particles generated in HIFAV thrombolysis was similar to that in HIFU. Additionally, the cavitation activities were found to be more intense in HIFAV thrombolysis. Although the efficiency of HIFAV thrombolysis was higher when the pulse repetition frequency increased from 100 to 500 Hz (41.4% vs. 65.4%, p < 0.05), it decreased when the PRF reached 1000 Hz (29.9%). Lastly, it was found that increasing the duty cycle from 5% to 15% led to a higher efficiency in HIFAV thrombolysis (40.3% vs. 75.2%, p < 0.001). This study illustrated that HIFAV provided enhanced thrombolysis and that its efficiency could be further increased by optimizing the ultrasound parameters.
研究领域:
生物医学工程
·
超声治疗
·
血栓性疾病
✓ 已验证
DOI
高影响因子
ACS Omega
·
2020
·
IF 2.87
Dinghao Wu,Chao Ye,Yawen Liu,Jing Ren,Yuan Yao,Shengjie Ling
Light, strong, and ductile materials (LSDMs) are desired in many emerging fields, such as biomedicine, aerospace industries, and structural engineering materials. However, producing such materials remains a significant challenge because their structures cannot confer the desired mechanical properties. In this study, we developed a silk fiber “welding” strategy to construct bioinspired LSDMs. The key to the welding process is to etch the surface of silk fiber through a partial dissolution process. The dissolved silk proteins further serve as welding materials or glues to bond the silk fibers together. Remarkably, these silk-LSDMs are not only lightweight (with the densities of around 0.28 g cm–3) but also strong and tough. Their compression strength reaches up to 13.8 ± 3.4 MPa, which is higher than those of most natural and engineered porous materials. These favorable structural and mechanical characteristics, together with outstanding biocompatibility of silk proteins, render these silk-LSDMs applicable in regenerated engineered tissues and water treatment materials.
研究领域:
材料科学
·
生物医学工程
·
结构工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）