Cloning Nacre's 3D Interlocking Skeleton in Engineering Composites to Achieve Exceptional Mechanical Properties

Zhao, Hewei; Yue, Yonghai; Guo, Lin; Wu, Juntao; Zhang, Youwei; Li, Xiaodong; Mao, Shengcheng; Han, Xiaodong

doi:10.1002/adma.201600839

Cited by 123 publications

(80 citation statements)

References 45 publications

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“…This leads to the enhanced alignment and restricts the flowability of hydrophilic 2D flakes. Some of the flakes could be swallowed by the growing ice dendrites . The architecture consisting of highly oriented MXene layers and interconnected bridges was further confirmed by the XRD patterns comparison of Ti 3 C 2 T x aerogel before and after rolling (Figure S4, Supporting Information).…”

mentioning

confidence: 58%

Anisotropic MXene Aerogels with a Mechanically Tunable Ratio of Electromagnetic Wave Reflection to Absorption

Han

Yin

Hantanasirisakul

et al. 2019

Advanced Optical Materials

261

180

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Fast progress of wireless communication techniques and applications, and the trend toward miniaturization and portability of wireless electronic devices lead to increasingly complex electromagnetic (EM) environments. Flexible, lightweight, and efficient electromagnetic interference shielding materials, which can be used in different frequency ranges, are needed for protection against EM pollution. [1,2] In general, electromagnetic interference (EMI) shielding materials refer to both EM wave reflection and absorption, as incident EM wave on a material surface undergoes reflection, absorption, and transmission. Although conventional EMI shielding materials, such as metals and graphite, possess high EMI shielding ability, it is mainly dominated by reflection. [3] The control of the ratio of EM reflection to absorption for EMI shielding materials is still a tremendous challenge.Macroporous structures offer an effective route to enhance EM wave absorption capability, owing to inner multiple scattering and EM field-induced currents that occur on walls and/or struts of pores. Porous metal and carbon-based foams made of Ag nanowires, graphene, and carbon nanotubes have been developed for EMI shielding. [4] Metal foams with high electrical conductivity have excellent EMI shielding effectiveness. However, the high density and easy surface oxidation, which changes the electrical conductivity, limit their practical applications. Additionally, plastic deformation of metals limits their lifetime in flexible electronic devices. Recently, graphenebased porous structures have emerged as promising candidates for EM wave suppression. This potential is attributed to the low density, large specific surface area, high carrier mobility, adjustable pore size, and improved flexibility of graphene foams. [5] However, pure graphene foam architecture that contributes to high-performance EMI shielding capability can only be produced via expensive chemical vapor deposition on a metal template. [6] As an alternative, reduced graphene oxide-based foams have been made using freeze-drying, solvothermal, and template methods. [7,8] Still, the low electrical conductivity and permittivity of reduced graphene oxide drastically decreases EMI shielding effectiveness and increases the material thickness required to achieve adequate protection.Lightweight and mechanically flexible materials that can provide efficient electromagnetic interference (EMI) shielding are highly desirable for protecting portable and smart electronic devices against electromagnetic pollution. Here, the authors report a tunable design of a three-dimensional (3D) porous aerogel structure made of 2D transition metal carbides and a carbonitride (MXene) with a long-range order of aligned lamellar architecture for EMI shielding. Bidirectional freeze-casting of MXene colloidal solutions is used to fabricate robust, compressible and lightweight aerogels, and achieve orientational assembly leading to outstanding EMI shielding performance and tunable ratio of reflection to absorption...

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mentioning

confidence: 58%

Anisotropic MXene Aerogels with a Mechanically Tunable Ratio of Electromagnetic Wave Reflection to Absorption

Han

Yin

Hantanasirisakul

et al. 2019

Advanced Optical Materials

261

180

View full text Add to dashboard Cite

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“…Montmorillonite (MMT) is a commonly used filler due to its large surface area and high aspect ratio of its laminar structure . The recent inorganic ceramic‐based material research focuses strongly on the enhancing the mechanical properties by utilizing nature inspired 3D structure . For example, Liang et al showed that high strength, high toughness, and shape memory MMT/ALG composites could be achieved by chemical modification.…”

Section: Introductionmentioning

confidence: 76%

Room temperature deformable shape memory composite with fine‐tuned crystallization induced via nanoclay particles

Sun

Cai

Ren

et al. 2017

J Polym Sci B Polym Phys

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It is known that particular types of semi‐crystalline/elastomer polymer blends exhibit shape memory effects (SME) due to the dispersion of two immiscible phases. In this study, the crystal structure of polylactic acid (PLA)/ thermoplastic polyurethane (TPU) based shape memory polymer (SMP) is altered by incorporating small amounts of montmorillonite (MMT) nanoclay. The results indicate the incorporation of MMT can improve the compatibility of the two different polymers. Moreover, the presence of MMT affects the total crystallinity of the SMP and improves mechanical properties. Lastly, uniaxial stretching deformation can be applied to the SMP at room temperature conditions while maintaining its shape memory properties. With 1 wt % MMT particles, the recovery ratio (Rr) was nearly 95%, which indicated a strong recovery effect. The shape‐fixing ratio (Rf) remained above 95% for all composites due to plastic deformation applied at room temperature. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017, 55, 1197–1206

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“…Survey of nacre‐like ceramic/polymer matrix bulk composites . A,B) Specific elastic modulus and specific strength compared to (A) other nacre‐like composites and (B) traditional engineering materials.…”

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confidence: 99%

Mineral Nano‐Interconnectivity Stiffens and Toughens Nacre‐like Composite Materials

et al. 2016

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Bulk nacre-like composites with mineral nano-interconnectivity at the same length scale as in the biological material are produced using magnetic alignment and selective sintering techniques. These materials display stiffness and strength levels comparable to that of continuous fiber composites with the advantage of easier processability inherent of discontinuous composites. This opens new possibilities to produce parts with more complex designs.

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Cloning Nacre's 3D Interlocking Skeleton in Engineering Composites to Achieve Exceptional Mechanical Properties

Cited by 123 publications

References 45 publications

Anisotropic MXene Aerogels with a Mechanically Tunable Ratio of Electromagnetic Wave Reflection to Absorption

Anisotropic MXene Aerogels with a Mechanically Tunable Ratio of Electromagnetic Wave Reflection to Absorption

Room temperature deformable shape memory composite with fine‐tuned crystallization induced via nanoclay particles

Mineral Nano‐Interconnectivity Stiffens and Toughens Nacre‐like Composite Materials

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