Small
·
2014
·Vol. 10
·期 13
·2595-2601
·
IF 7.514
Jinyou Shao,Yucheng Ding,Wenjun Wang,Xuesong Mei,Haipeng Zhai,Hongmiao Tian,Xiangming Li,Bin Liu
Graphical A facile technique for the fabrication of fully-covering multiscale structures surfaces by nanoimprinting and modified laser swelling is presented. The approach is proved to be capable of generating regular and adjustable dome-like hierarchical structures, and it is used to create nature-inspired, multiscale functional surfaces with tunable wettability.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2023
·Vol. 12
·期 18
·3366
·
IF 5.2
Xinyue Liu,Zhuangzhuang Sun,Wenqing Zhao,Jiayu Zheng,Wei Liang,Wenhao Li
To explore the effect of amylose within starch granules on the efficiency of starch hydrolysis by acid, we chose the warm water extraction method to treat red adzuki bean starch to obtain different degrees of amylose removal granule models and to prepare samples in combination with acid hydrolysis. The amylose content was reduced after acid hydrolysis, reducing the peak viscosity (2599–1049 cP), while the solubility was significantly increased. In contrast, the short-chain content of the deamylose–acid hydrolysis samples was reduced considerably, exacerbating the trend towards reduced starch orderliness and increased solubility. This work reveals the granular structure of starch from the point of view of deamylose and contributes to a thorough understanding of the mechanisms of acid hydrolysis. It might add to knowledge in starch science research and industrial applications for the acid processing of starch-based foods, particularly with regard to the most important factors controlling the structure and function of starch.Keywords:deamylose;dual modification;red adzuki bean starch;multiscale structure
研究领域:
食品科学
·
淀粉化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yingjun Qiao,Xianyang Dai,Bing Zhao,Zhiqiang Qian,Zhijian Wu,Zhong Liu
It is highly appealing to use titanium-based adsorbents (like H 2 TiO 3 (HTO)) that have a high capacity and selectivity to directly extract Li + from an aqueous solution. However, HTO still faces the problems of low actual adsorption capacity and dissolution of Ti 4+ , and the application of powder adsorbents is limited by poor fluidity and poor recyclability. In this work, a multi-scale modification strategy was adopted. At the atomic-scale, we prepared Ni-doped HTO-Ni-2 % powder which exhibited higher adsorption capacity (33.27 mg/g) and lower dissolution rate of Ti 4+ (2.2 %) compared to undoped HTO (29.73 mg/g and 2.63 %). Computational studies showed that Ni doping replaced Li in the (Li) layer, resulting in more stable Ni O bonds and enhanced electronic transition ability. At the micro-scale, we have achieved successful granulation of HTO-Ni-2 % using ethylene vinyl alcohol (EVOH) as a binder for the first time. Owing to the increased hydrophilicity by EVOH, the spherical adsorbents exhibited impressive performance, achieving adsorption equilibrium in a short time while maintaining a considerable adsorption capacity (24 h, 10.2 mg/g), and having lower Ti 4+ dissolution. These results have significant implications for developing efficient adsorbents for lithium extraction.
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
CARBOHYDRATE POLYMERS
·
2020
·
IF 7.182
Shuai Jiang,Meiling Zhang,Wei Jiang,Qiuyu Xu,Jianyong Yu,Liying Liu,Lifang Liu
Herein, multiscale nanocelluloses (NCs) were prepared and blended with fumed silica and organosilane to fabricate freeze-dried aerogels in various combinations. The cooperation of multiscale raw materials optimized the porous structures of aerogels, thus improving the thermal insulation properties. The use of NCs with different characteristics endowed the resultant aerogels with distinct mechanical performance. The addition of high-aspect-ratio NCs in the composite aerogels was essential for improving the bendability. Furthermore, lower-aspect-ratio NCs helped to resist the compression deformation of the cross-linked aerogels. The functional groups on NCs made a difference in the thermal stability of the as-prepared aerogels. However, after treating at 150–350 ℃, the aerogels could maintain structural integrity and high elastic recovery rate, possessing ultralow density (7.2 kg/m 3 ) and thermal conductivity (25.4 mW m −1 K −1 ). The outstanding thermal properties and controllable mechanical performance make these aerogels potential candidates in different fields such as textile and building industries.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
Small
·
2025
·Vol. 21
·期 8
·2404632
·
IF 12.1
Shuaihang Qiu,Ji Zou,Jingjing Liu,Weimin Wang,Jingjing Xie,Wei Ji,Jinsong Wu,Yanchun Zhou,Zhengyi Fu
Unlike strong yet tough high entropy alloys, high entropy ceramics normally exhibit good hardness but poor strength and fracture toughness. To overcome this obstacle, B 4 C-(Zr 0.2 Hf 0.2 Nb 0.2 Ta 0.2 Ti 0.2 )B 2 composites with a unique hierarchical microstructure are designed and prepared by boronizing reaction sintering of dual-phase multicomponent carbides. In the as-obtained composites, massive platelet-like aggregations assembled by core-rim structured (Zr 0.2 Hf 0.2 Nb 0.2 Ta 0.2 Ti 0.2 )B 2 fine grains are distributed randomly in the B 4 C matrix. Such special microstructure makes B 4 C-(Zr 0.2 Hf 0.2 Nb 0.2 Ta 0.2 Ti 0.2 )B 2 composites exhibit excellent mechanical properties. An extra toughening mechanism of crack bridging is provided in as-obtained composites (fracture toughness of 4.70 ± 0.08 MPa m 1/2 ) by the interaction between cracks and platelet-like diboride aggregations whilst fine-grained microstructures guarantee high flexural strength (633 ± 25 MPa). More importantly, during producing indents, homogenization of core-rim structured (Zr 0.2 Hf 0.2 Nb 0.2 Ta 0.2 Ti 0.2 )B 2 alongside more difficult lattice glides caused by short-range ordering and rough glide planes containing different-dimension transition metal atoms cooperatively induce increased indentation volume work and consequently unparalleled Vickers hardness (>54 GPa at 1.96 N), which is confirmed by in-depth transmission electron microscopy characterizations. This work gives a new inspiration to design high-performance high-entropy ceramics via multi-scale microstructure tailoring and composition tuning.
研究领域:
材料科学
·
固体力学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Peng Lu,Yang Yang,Bin Luo,Chenchen Cai,Tao Liu,Song Zhang,Mingchao Chi,Tong Zhao,Jinlong Wang,Xiangjiang Meng,Yayu Bai,Yuzheng Shao,Guoli Du,Shuangfei Wang,Shuangxi Nie
Lightweight green polymer materials with exceptional toughness, high strength, and excellent ductility represent ideal candidates for enabling next-generation sustainable flexible electronics. However, the conflicting properties of material strength and toughness present a significant challenge in achieving an optimal combination of both attributes. In this study, a strong yet tough polymeric triboelectric material is prepared by constructing a multiscale reinforced network based on a nonsolvent-induced microphase separation strategy. The synergistic enhancement of strength and toughness is achieved by reinforcing non-covalent interactions within the polymer and constructing nanofibrous networks. The resulting triboelectric materials exhibited remarkable fracture toughness (78.6 MJ m −3 ), high tensile strength (42.5 MPa), an improvement in triboelectric output (71%), and promising recyclability. The integrated triboelectric wearable sensor maintained robust output signals. This study provides a novel solution for coordinating the conflicts between strength and toughness in heterogeneous polymer materials, showing significant potential in expanding their applications in flexible electronics and self-powered sensing technologies.
研究领域:
材料科学
·
柔性电子学
·
可持续发展
✓ 已验证
产品关联
DOI
高影响因子
SusMat
·
2023
·Vol. 3
·期 3
·320-333
·
IF 28.4
Shuangjian Yu,Yeqing Li,Siwu Wu,Zhenghai Tang,Liqun Zhang,Baochun Guo
As a kind of bio-derived feedstock, vegetable oil (VO) shows great potential to replace petroleum-based monomers to develop sustainable polymer materials because of its easy availability, low cost, bio-renewable, and environmentally friendly nature. However, due to the high cross-linking density and amorphous nature, directly cured VOs generally tend to be brittle and weak. To date, it is still difficult to adopt VOs and their derivatives as structural materials to prepare high-performance elastomers. To address this important issue, a multi-scale topology design strategy was proposed in this work. First, topology regulation and functionalization of VO-based networks were realized by managing functional groups proportion during the bulk polymerization of epoxidized soybean oil with dimer fatty acids. Furthermore, a second polymer (SN) network was introduced into the VO-based network as a protective layer via interfacial cross-links. The generated VO-based elastomers (VOEs) exhibit unprecedented comprehensive properties (VO content ≥70 wt.%, T g as low as −24.4°C, toughness up to 6.8 MJ/m 3 ). Besides, the VOEs also exhibit excellent reprocessability and self-healing capability. Overall, this work developed a novel kind of VOEs with significant comprehensive advantages and provided important inspiration for the preparation of high-performance elastomers through multi-scale topology regulation.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Delong Kong,Hansheng Li,Yuzhi Gao,Lijuan He,Xuyang Ji,Fan Zhang,Wenjing Li,Hao Zhang
Thermal insulation nanomaterials based on aerogels have attracted more and more researchers’ attention due to their low thermal conductivity and lightweight characteristics. However, the high-temperature thermal insulation performance and the mechanical strength of the material itself remain a great challenge. We developed a method to construct multi-scale structures of thermal insulation materials based on dry aerogel particles, ultralong nanowires, and interfacial crosslinkers. In our work, the introduction of surfactants enabled the effective dispersion of aerogels and nanowires in the aqueous solution instead of in an organic solvent. Also, thanks to the synergistic effect of crosslinkers and nanowires, the materials exhibit a good mechanical strength; the maximum value of tensile strength for nanocomposite materials is up to 0.76 MPa. Aerogels with a resistance of 1000 °C and reflecting screens were adopted to prepare the multiple-layer thermal insulation materials, enabling the obtained material to show the outstanding thermal insulation property [0.028 W (m·K)−1 at 25 °C and 0.059 W (m·K)−1 at 800 °C]; additionally, when the temperature of the heating surface was raised to 800 °C, the back surface temperature of 15 mm materials increased to an ultimate temperature of only 218 °C after heat treatment for 500 s. These favorable multi-features indicate the materials are ideal for thermal insulation in industrial, aerospace, and even extreme environmental conditions.
研究领域:
材料科学
·
热能工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Lingling Huang,Yucheng Tian,Fan Wu,Xia Yin,Roman A. Surmenev,Jianyong Yu,Yi-Tao Liu,Bin Ding
The accelerated progress of modern transportation and urbanization has resulted in severe environmental noise pollution, imposing an adverse impact on economic productivity and public health. Concurrently, the synergistic challenges of waste heat accumulation and extreme low-temperature conditions present critical threats to equipment reliability. Hence, a unique strategy, based on dual air-gelation, is developed to synthesize an aerogel-structured fiber metafabric for noise reduction and thermal insulation directly. By modulating the interactions among polymers, solvents, and water, the interaction of charged jets can be facilitated, which in turn promotes rapid phase separation and the formation of a fibrous 3D network composed of aerogel fibers with internal nanopores (size 30–80 nm). Owing to the presence of micro/nano multiscale pore structure, aerogel fiber metafabric exhibits lightweight (6 mg cm–3) and elastic characteristics while also demonstrating excellent thermal insulation performance (28.58 mW m–1 K–1) and sound absorption property (noise reduction coefficient of 0.57). Furthermore, the incorporation of hydrophobic agents and cross-linking agents endows superior mechanical property to the aerogel fiber metafabric (nearly 0% plastic deformation after 400 compression cycles) and hydrophobicity (water contact angle ∼134.3°). This work provides rich possibilities for the development of materials with both noise reduction and thermal insulation properties.
研究领域:
材料科学
·
环境工程
·
声学
·
热能工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·Vol. 107
·期 4
·2360-2370
·
IF 3.9
Zhemin Chen,Yongping Pu,Yating Ning,Yiting Hui,Chunhui Wu,Lei Zhang,Xuqing Zhang,Bo Wang
Eco-friendly ceramic capacitors gradually become an important section of pulsed power devices. However, the synchronous realization of ultra-high energy storage density ( W rec > 6 J/cm 3 ) and efficiency ( η > 90%) is difficult. Thus, a novel multiscale amelioration strategy in Na 0.5 Bi 0.5 TiO 3 -based ceramics is proposed to achieve ultra-high energy storage density and efficiency. The multiscale amelioration strategy for (Na 0.5 Bi 0.47 La 0.03 ) 0.94 Ba 0.06 TiO 3 (NBLBT) ceramic focuses on grain size, bandgap width, and dielectric relaxor behavior, which can be regulated by introducing Sr(Al 0.5 Nb 0.25 Ta 0.25 )O 3 (SANT). On the one hand, the refined grain size and increased bandgap width are conducive to improving the breakdown strength. On the other hand, the optimized dielectric relaxation behavior is beneficial to suppress the remanent polarization. Accordingly, an ultrahigh W rec = 6.89 J/cm 3 and η = 90.1% are simultaneously achieved in 0.84NBLBT- 0.16SANT ceramic. In addition, the sample synchronously possesses excellent thermal and frequency stability (a variation within 5% in W rec and η ), transient discharge rate of t 0.9 ∼ 78.8 ns and a high-power density of P D ∼ 114.5 MW/cm 3 . This study provides an effective strategy to further develop pulsed power devices.
研究领域:
材料科学
·
能源工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Runze Jin,Donghui Guo,Lijie Qu,Baosheng Xu
Toughening of epoxy resin (EP) is a common topic in the research of high-performance matrix for advanced composite materials. When the material is at extreme temperatures, the toughening requirements of EP will become more prominent. To this end, we designed a multi-scale interface to improve the strength and toughness of an EP at extreme temperatures simultaneously. A multi-scale interface layer was fabricated within the EP system using CuO nanorods (NRs) and epoxy-based cage-type polysiloxane (EP-POSS) as the toughening phase. By changing the content of CuO NRs and EP-POSS, regulating the multi-scale interface structure between the two, thereby further regulating the mechanical properties of the system. When the relative contents of the CuO NRs and EP-POSS were 1:1, the mechanical properties of EP/NP-CuO were optimised at room temperature(RT) and 77 K. The tensile strength increased by 75.9 % and 97.3 %, respectively, compared to the pure EP. The fracture toughnesses increased by 83.1 % and 58.9 %, respectively, compared to the pure EP. The improvement in mechanical performance is mainly attributed to the multi-scale interface structure between NP-CuO and EP, which effectively consumes the energy and stress required during deformation.
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
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 9
·1-13
·
IF 2.8
Huang Jiaqiang,Ning Zhiling,Yu Caiping,Liu Dongjing,Liu Yujie,Xiao Dawei
The sintering technology of Cu nanoparticle paste has significant potential for application in wide bandgap semiconductor devices. In this study, a high-performance and multi-scale Cu nanoparticle paste is proposed to solve the critical issues of easy oxidation during preparation and storage, as well as high sintering temperature. The multi-scale Cu nanoparticles with sizes ranging from 20 to 140 nm were synthesized simply and efficiently using a liquid-phase reduction method. These nanoparticles were subsequently mixed with a reducing composite solvent to develop a Cu nanoparticle paste. Based on this paste, pressure-assisted Cu–Cu bonding experiments were conducted at various temperatures and durations. The Cu–Cu joints achieve an average shear strength of 33.3 MPa after sintering at 240 °C in a nitrogen atmosphere and even exceed 60 MPa when the temperature is raised to 280 ℃. Additionally, with a reductive surface coating, the multi-scale Cu nanoparticles can be stored for over 20 days under ambient air condition. Besides, the enhanced bonding strength and dense microstructure are attributed to the close-packing effect of multi-scale nanoparticles and the facilitation of small size nanoparticles. The proposed multi-scale Cu nanoparticle paste exhibits excellent oxidation resistance and low-temperature sintering performance, which demonstrates significant potential for application in power device packaging and interconnection.
研究领域:
材料科学
·
半导体器件工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）