RSC Advances
·
2018
·Vol. 8
·期 57
·32522-32532
·
IF 2.936
Hong Lei,Yao Wu,Sen Yang,Chunfang Fu,Jichuan Huo
Preparation of new materials from biomass is good for sustainable development. Carbon/carbonaceous foams (CFs), as important materials widely applied in both military and civil use, are usually made from nonrenewable materials at high temperature (usually over 1000 °C) and high pressure (at MPa magnitude). Although some biomass raw materials have been used, there is still a fascinating issue waiting to be discussed. That is, what kind of biomass would be suitable for making CFs, or what the biggest challenge might be if these raw materials are used. Herein, a CF with advanced compressibility was made from starch with a simple and energy efficient strategy. The product can be made at much lower temperature (below 500 °C) and pressure (∼190 Pa) than conventional strategies. The understanding of the conversion mechanism provides inspiration for the conversion of other biomass into value-added carbonaceous materials. Due to the presence of reactive groups on the surface of the as-prepared CF, the product can be further modified or used as a substrate to prepare composites for catalysis, phase change energy storage, sensors, water purification, and so on. In this work, its potential application in oil/water separation was demonstrated.
研究领域:
材料科学
·
生物化学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Ning Zhang,Yu Zhou,Yana Zhang,Wei Jiang,Tianhe Wang,Jiajun Fu
Polystyrene is a common material featured with its low cost. In this work, a novel low dense polystyrene sponge with superhydrophobicity and compressibility was prepared successfully by a dual-templating method, including High Internal Phase Emulsions (HIPEs) processing and the introduction of organic template species. For the first time stearic acid or calcium stearate was introduced into the HIPEs system to enhance micro roughness and impart the PolyHIPEs with superhydrophobicity. Besides, owing to the low density, high porosity, interconnected network structure and ultra large void size, the sponge exhibited fast oil adsorption rate and superior oil adsorption capacity of 66.2 g/g toward diesel. After adsorption saturation, the sponge was regenerated by simple squeezing with the deoiling rate over 80%. Importantly, the sponge showed swellable property and about 80% of the initial adsorption capacity was retained after 10 adsorption-compression circles. High adsorption rate, excellent oil adsorption capacity, high selectivity, low cost, compressibility and renewability, all these favourable properties make it an ideal and practical oil adsorbent.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2025
·Vol. 8
·期 4
·1-15
·
IF 21.8
Zhang Yicheng,Guo Weijie,Chen Siqi,Fang Yan,Weng Yunxiang,Liu Haiqing,Chen Qinhui
Hemostasis of incompressible trauma has been a challenge in the field of injury first aid, and these wounds are not suitable for the traditional dressings and for applying pressure to stop hemorrhage together. In this study, a Janus sponge of bioactive glass-poly (N-isopropylacrylamide) (PBG-PNIPAM) with mimic tissue structure was prepared by attaching different modified BG nanoparticles to the top and bottom layers of a polyvinyl alcohol sponge to improve hemostasis at incompressible wounds. Upon contacted with blood, the hydrophilic layer which was push into the internal tissue released Ca 2+ and SiO 4 4− to activate the endogenous and exogenous coagulation cascade to accelerate blood coagulation, while the hydrophobic layer with excellent breathability kept in epidermis could block wound to decrease the blood loss and prevent the growth of bacteria. In the rat incompressible model, the blood loss of PBG-PNIPAM Janus sponge was much less than 2.3 times of the commercially available gelatin hemostatic sponge. In vitro results showed that the PBG-PNIPAM Janus sponge exhibited excellent clotting ability, high hemocompatibility and low cytotoxicity. This composite Janus sponge with hemostatic and antibacterial properties is expected to be applied in sharp instrument injuries. Graphical
研究领域:
生物学
·
医学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2022
·
IF 19.069
Rumin Fu,Lingjie Tu,Youjun Guan,Zhengao Wang,Chunlin Deng,Peng Yu,Guoxin Tan,Chengyun Ning,Lei Zhou
Soft and elastic piezoelectric materials have critical applications in emerging fields such as wearable electronics and soft robotics. Although there is much progress towards piezoelectric elastomers , existing methods to achieve such materials rely mainly on blending piezoelectric ceramic or polymer fillers into elastomers. Here, we report a soft tissue-like polyacrylonitrile (PAN)-based piezoelectric elastomer, which shows a high piezoelectric coefficient d 33 of ∼ 40 pC/N and an intrinsic super-elasticity (100 % self-recovery). Moreover, ultrahigh compressibility (> 99 % strain) and stretchability (> 250 % strain) are achieved simultaneously for the elastomer. The elastomer can produce long-term stable electrical outputs and exhibit a fast piezoelectric response and high sensitivity due to the stress-induced poling effect. We proceed to demonstrate that the piezoelectric elastomers can be used for simultaneous impact protection and self-sensing, as well as continuous human pulse and complex hand movements monitoring. These results suggest that the material has potential applications for soft electronics.
研究领域:
材料科学
·
软电子学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2020
·
IF 7.635
Yang Dai,Xinyu Wu,Zhangshuo Liu,Hao-Bin Zhang,Zhong-Zhen Yu
The increasingly severe electromagnetic pollution calls for high-performance microwave absorption materials . Lightweight, robust and porous MXene/polyimide (MP) aerogels with reversible compressibility , anisotropic pressure sensitivity and microwave absorption performances are fabricated by interface-reinforcement and bidirectional-freezing approach. The interfaces between MXene sheets are effectively reinforced by incorporated polyimide while anisotropic wave-like lamellar architectures are constructed during the bidirectional-freezing process due to the generated dual temperature-gradients. The highly anisotropic aerogel exhibits obvious higher mechanical strength and electrical conductivity along the lamella direction, but better elasticity and less energy dissipation in the normal direction. The reversibly compressible porous MP architecture not only delivers steady and repeatable electrical resistance response, but also presents long-term discernible direction-dependent pressure sensitivity for 1000 loading-release cycles at a strain of 50%. The anisotropic and porous architecture benefits microwave absorption. The structure optimization yields tunable effective absorption bandwidth (EAB) in a range of 3.9–18 GHz. Particularly, the MP aerogel shows the best EAB of 6.5 GHz for reported MXene-based microwave absorbers at only 1.91 mm, and the EAB covers the whole X-band for an aerogel with a thickness of 2.57 mm. These promising characteristics make the interfacially reinforced anisotropic MXene aerogels applicable for wearable piezoresistive devices and microwave absorbing materials.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2023
·
IF 9.1
Jiangang Zhang,Han Wang,Tengxin Zhang,Xinyang Sun,Yu Meng,Chaoqun Ma,Tianyu Zhang,Ni Lu,Chang Liu,You Zeng
Polymer-based thermal interface materials (TIMs) with high thermal conductivity are in high demand for rapid heat transfer between electronic components. It is still challenging to achieve significant enhancement in thermal conductivity of polymeric composites while maintaining satisfactory electrical insulation and good compressibility . In this work, we have developed a vertically-oriented graphene-boron nitride (GNP-BN) skeleton using graphene oxide (GO) as inorganic adhesives through ice-templating method, and vacuum-infiltrated with polydimethylsiloxane (PDMS) to fabricate GNP-BN/PDMS composites. The 5.2 wt% GNP-BN/PDMS composites exhibited high-efficiency thermal conduction (through-plane thermal conductivity of 1.16 W m −1 K −1 and enhancement efficiency as high as 104.7%), satisfactory electrical insulation (volume resistivity of over 10 8 Ω cm), and good compressibility (compressive modulus as low as 1.47 MPa). Such high performance is mainly attributed to the high-efficiency heat transfer pathway, low interfacial thermal resistance between components, effective hindrance to long-distance electron transport , and easy deformation of porous skeletons. The GNP-BN/PDMS composites show great potential to be used as high-performance TIMs in the field of electronic devices.
研究领域:
材料科学
·
热管理技术
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2023
·Vol. 18
·期 15
·e202300340
·
IF 4.1
Xinyuhang Zhang,Wei Liao,Yunpeng Wang,Zhongqiang Yang
Graphical A compressible and omnidirectional gripper is constructed using a liquid crystal elastomer foam rod. The compressed gripper enters a slit and grasps and moves hot objects to a safe place, demonstrating its potential for emergency disposal. The reported simple design for gripper construction can enhance the functions of soft robots. Liquid crystal elastomers (LCEs) are considered to be a promising material for the fabrication of soft grippers because of their large and reversible deformations, an LCE gripper with suitable compressibility and omnidirectionality has not yet been developed. To overcome these obstacles, this study utilizes salt template method to fabricate a rod-like LCE foam as gripper. The thickness of the compressible foam can be reduced by up to 77%, temporarily maintaining the deformation and enabling the gripper to pass through slits. The foam was aligned along the long axis and the length of the foam exhibits reversible thermal responsiveness and contract up to 57% along its alignment. Additionally, when the foam approaches a heat source, the generated temperature gradient results in a contraction gradient owing to the low thermal conductivity of the LCE foam. This in turn causes the foam to reversibly bend with a bending angle up to 93° and follow the movement of a heat source omnidirectionally. The developed gripper successfully grasps, moves, and releases hot objects in a cold and safe place, demonstrating its potential for emergency disposal. Thus, LCE foams can be considered suitable materials for novel gripper design and construction.
研究领域:
材料科学
·
软体机器人学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Yuwen Hu,Ruijian Zhu,Dazhi Zheng,Shiou Liang,Zengmei Wang
Particulate matter (PM) from high-temperature emissions like chemical plants, coal stoves and vehicle exhausts poses a gravel challenge to human health. To address this issue, researchers have explored various fiber filters, yet the bulk struggle to withstand high temperatures. In this study, mullite fiber sponges were developed utilizing low-cost materials and Kármán vortex solution blow spinning, using surfactants to improve the spinnability of the sol. Optimized sponges demonstrate ultralight (19 mg cm −3 ), temperature-resistant reversible compressibility (50% strain) and a water contact angle of 135°. These sponges exhibited exceptional thermal insulation (thermal conductivity: 0.0256 W m −1 K −1 ) and performed well in high-temperature air filtration. At 800 °C, the mullite sponge with a base weight of 35 mg cm −2 , achieved an average filtration efficiency of 98.18 % and 99.57 % for PM 2.5 and PM 2.5−10 , respectively, with a quality value of 0.98 Pa -1 at a wind speed of 4 cm s −1 . This low-cost mullite fiber sponge offers a promising avenue for designing high-performance filtration materials.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
ChemNanoMat
·
2019
·Vol. 6
·期 2
·316-325
·
IF 3.431
Xiaorong Yan,Mingjun Hu,Jinxing Liu,Li Yan,Naibai Zhang,Jiefeng Gao,Jinzhang Liu,Guangcun Shan,Jun Yang
Graphical A class of highly compressible Ni−Co alloy-based sponges with tailorable conductivity and soft magnetic properties was prepared by employing elastic porous melamine sponges that was modified through dopamine-induced free radical polymerization reactions as the support. The obtained alloy sponges show good compression-resilience behavior, excellent soft magnetic properties (54 emu/g) and high electromagnetic interference shielding effectiveness (7273 dB ⋅ cm 2 ⋅ g −1 ), and thus can find promising applications in wide fields including pressure resistance sensors, magnetic absorbents, tunable EMI shielding, etc. Porous metallic sponge has shown enormous application potential in many fields including electrochemical electrode, catalysis, sensors, separation and purification, microwave and sound inhibition, etc. In this paper, we described the preparation of a class of highly compressible Ni−Co alloy-based sponges with tailorable conductivity and soft magnetic properties as well as EMI shielding ability by employing elastic porous melamine sponge as the support. The melamine sponge was first modified by one-step dopamine-triggered radical polymerization reaction, in which polymer brushes with quaternary ammonium cations were grafted onto the sponge fibers for the capture of negative catalyst moieties. The immobilized catalyst moieties could subsequently induce in-situ chemical deposition of a uniform and well-adhesive Ni−Co alloy layer with controllable compositions and thickness on the fiber surface owing to the interpenetrating network between hydrophilic polymer brushes and the in-situ deposited metal layer. The obtained alloy sponges show good compression-resilience property, excellent conductivity and favorable soft magnetic performance as well as good compressive fatigue resistance during repeated compression-release cycles, and thus can find promising applications in many fields, including pressure resistance sensors, magnetic controlled pollutant absorbents, tunable EMI shielding materials, etc.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 30
·15482-15488
·
IF 7.443
Jinhui Li,Songfang Zhao,Guoping Zhang,Yongju Gao,Libo Deng,Rong Sun,Ching-Ping Wong
Endowing graphene sponge with compressibility and conductivity offers the possibility to regenerate piezoresistivity and is therefore of great interest in the field of sensors. In this work, highly compressible three-dimensional graphene-only sponge (CGS) was prepared through a facile method by using ammonium sulfide and ammonia solutions under mild conditions. The morphologies and microstructures of the as-prepared CGSs can be controlled by adjusting the mass ratio of graphene oxide (GO) to ammonium sulfide which changed from a metallic sheen bulk with a leaf-shaped structure to a black sponge with a porous structure. Besides, by simply changing the concentrations of GO, CGSs with different porosity, conductivity as well as mechanical strength were obtained. Moreover, the resultant CGSs show ultralow density (as low as 4.9 mg cm−3), high porosity (as much as 99.8%), great compressibility (as much as the strain of 80%), and excellent stability (100 cycles) during compression. Furthermore, the sensitive variation of electrical resistance and cycle stability was validated under the compressive strain of 50% which make CGSs great candidates for pressure-responsive sensors, elastic conductors and other applications.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2018
·Vol. 54
·期 7
·5918-5926
·
IF 2.993
Ren Rui-Peng,Wang Zhen,Ren Jing,Lv Yong-Kang
Graphene aerogel with three-dimensional (3D) interconnected porous structure and good hydrophobicity has been extensively investigated for sorbent materials for oils and demonstrated to be effective. Herein, a 3D polyimide–graphene aerogel (PI-GA) nanocomposite has been prepared by introducing water-soluble polyimide (PI). Benefiting from the synergetic effect of PI and GA, the PI-GA nanocomposite exhibits ultralow density, excellent compressibility and hydrophobicity. When evaluated as a sorbent material for oils and organic solvent, PI-GA nanocomposite has high absorption capacity and can separate oil from water rapidly and efficiently. Furthermore, the mechanical squeezing process can be used for the recycling of the PI-GA due to its excellent compressibility. The excellent absorption performance and robust mechanical properties make the PI-GA suitable for oil cleanup and chemical leakage.
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
MACROMOLECULAR BIOSCIENCE
·
2025
·
IF 4.1
Yu-Yao Li,Xiao-Hong Zhu,Zedong Cai,Xiao-Suan Zhou,Wei Wang,Ya-Jun Shi,Bang-Le Zhang
Non-compressible hemorrhage and bacterial infection remain as the primary challenges in emergency surgery and war trauma. To better control hemorrhage immediately from non-compressible wounds, an injectable double-network multifunctional hemostatic adhesive GelMA/QCS/Ca 2+ based on gelatin methacryloyl (GelMA), quaternary ammonium chitosan (QCS) and calcium ions is designed. The adhesive formation is based on the blue light-triggered crosslinking of GelMA and the synergistic hydrogen bond between GelMA and QCS. The results show that the fast adhesive triggered by blue light provides rapid hemostatic ability through sealing blood vessels, including tail amputation, puncture femoral artery, liver puncture, and hepatectomy. A series of in vitro and in vivo hemostatic and antibacterial models in mice indicate that GelMA/QCS/Ca 2+ adhesive exhibits better hemostatic and antibacterial abilities than the commercially available adhesive fibrin glue and the hemostatic hydrogels with a single function. GelMA/QCS/Ca 2+ adhesive has broad application prospects as a hemostatic wound dressing in the emergency treatment of non-compressible hemorrhage and bacterial infection of wounds.
研究领域:
生物医学工程
·
创伤外科
·
材料科学
✓ 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）