CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Kun Liu,Yuan Wang,Dayong Ren,Wujie Dong,Hui Bi,Wei Zhao,Fuqiang Huang
Bioinspired design and manufacture based on sustainable raw materials is emerging as a promising way to develop high-performance lightweight structural materials. However, the bottom-up fabrication of bioinspired materials, involving the densification from dispersion systems of heterophase components through conventional evaporation methods, faces significant challenges due to high energy and time consumption. Here we demonstrate a simple and efficient method termed “capillarity-assisted densification” for the facile preparation of high-performance bioinspired structural materials. This versatile method, inspired by the wicking effect, effectively accelerates manufacturing efficiency while maintaining structural stability. The as-fabricated mineralized cellulose bulk structural materials exhibit high specific strength (146 MPa/(Mg m −3 )) and toughness (6.4 MPa m 1/2 /(Mg m −3 )), surpassing those of conventional polymer-based composites and various bioinspired composites. Furthermore, such a unique lightweight structural material bridges the gap between engineering ceramics and light alloys regarding the coefficient of thermal expansion and specific fracture toughness. We propose that green and robust mineralized cellulose bulk structural materials are promising for advanced lightweight structures, and that the capillarity-assisted densification could be easily adapted for various dispersion phases for practical bioinspired production.
研究领域:
材料科学
·
生物启发设计
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Chenglong Zhu,Quan Wang,Jiahao Li,Yinbo Zhu,Rongguang Che,Yidi Li,Jingjiang Wei,Siqian Lu,Hao Xie,Hao Wang,Weimin Wang,Hang Ping,Kun Wang,Zhengyi Fu
As a laminated composite, the robust interface between aragonite platelets and organic matrices imparts nacre with superior mechanical properties. Additionally, the prestressing strategy, which involves compressing hydroxyapatite platelets through the contraction of collagen molecules, is employed to enhance bone strength. Inspired by these natural materials, layered brushite/sodium alginate composite bulks (BSPE) are fabricated with high performance through synergistic interfacial interactions and prestress processing. The bulks are prepared by stacking and hot-pressing BSPE films, which are obtained via unidirectional freeze-casting and pressing. To strengthen the interfacial interactions, brushite platelets are surface-modified with polyvinyl alcohol molecules, forming strong hydrogen bonds with sodium alginate chains. Furthermore, megapascal-level contractile prestresses are generated by soaking surface-modified films in ethanol, inducing the shrinkage of sodium alginate chains through dehydration. Consequently, the specific strength and specific toughness of the composites reach 137.5 MPa/(Mg m −3 ) and 3.8 MPa m 1/2 /(Mg m −3 ), respectively, representing 2.0 and 2.5 times the values of natural nacre. Moreover, the energy absorption capacity of the BSPE bulk is approximately 2.5 times higher than that of the control bulk. The synergistic approach provides new insights for designing and manufacturing high-performance composites under mild conditions.
研究领域:
材料科学
·
复合材料
·
仿生材料
·
力学性能
·
高分子科学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2019
·Vol. 30
·期 6
·1908556
·
IF 15.621
Yadong Yu,Yan He,Zhao Mu,Yueqi Zhao,Kangren Kong,Zhaoming Liu,Ruikang Tang
Spider silk fibers (SSF) have a hierarchical structure composed of proteins with highly repetitive sequences and biomineralization is sophisticated in hierarchical organic–inorganic constructions. By using inorganic hydroxyapatite (HAP) and organic polyvinyl alcohol (PVA) to simulate the rigid crystalline and flexible amorphous protein blocks of SSF, respectively, biomimetic mineralization is herein attempted for the large-scale preparation of SSF-like macrofibers with a hierarchical ordered structure, a superhigh tensile strength of 949 ± 38 MPa, a specific toughness of 296 ± 12 J g −1 , and a stretch ability of 80.6%. The hybrid macrofibers consist of microfibers, and their outstanding performance (e.g., extreme tolerance to temperatures ranging from −196 to 80 °C and superior ability to inhibit the transverse growth of cracks) is attributed to the hierarchical arrangement as well as the organic–inorganic integrated structure within the oriented mineralized polymer chains. The biomineralization-inspired technique provides a promising tactic that can be used to synthesize functional organic–inorganic fibers that are structurally complex and, furthermore, industrially manufacture SSF-like artificial fibers with a supertoughness.
研究领域:
材料科学
·
生物材料
·
生物力学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yaoguang Wang,Nifang Zhao,Ziyu Shao,Jiaxian Wen,Qiong Ma,Weiwei Gao,Hao Bai
Biomimetic learning has boosted the development of layered nanocomposites with superior mechanical properties, fast ion conduction, high barrier capacities, and high conductivities, resulting in numerous practical applications in artificial structural materials, energy storage, filtration, and electromagnetic shielding. These outstanding properties arise from the highly oriented layered structure. Convenient fabrication and complex shapes are required for practical applications. However, conventional strategies, including ice templating, vacuum filtration, and electromagnetic induction, are constrained by time-consuming fabrication and sample shapes, restricting their extension to large-scale applications. Here, we present a facile, universal, and scalable strategy for fabricating layered nanocomposites using ion diffusion-induced directional gelation. This ultrafast volumetric production, including controllable thickness growth with no size restriction, results from continuous gelation and convenient post-processing, whose fabrication rate is 21.7 times that of ice templating, 13.2 times that of vacuum filtration, and 3.1 times that of electromagnetic induction. Furthermore, layered alumina/epoxy nanocomposites were prepared with superior specific strength (2.9 MPa m 1/2 /(Kg/m 3 )) and specific toughness (96.2 MPa/(Kg/m 3 )), demonstrating the validity of our strategy for layered structures. Moreover, our approach can be extended to other material systems and arbitrary shapes for multifunctional applications in wearable devices, sensors, and anti-corrosion coatings.
研究领域:
材料科学
·
纳米技术
·
复合材料
·
制造工程
✓ 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）