Highly Flexible Superhydrophobic and Fire-Resistant Layered Inorganic Paper

Chen, Feifei; Xiong, Zhi‐Chao; Sun, Tuan-Wei; Shen, Yue-Qin

doi:10.1021/acsami.6b12838

Cited by 122 publications

(88 citation statements)

References 68 publications

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“…CF is a linear polymer composed of glucose, which has a large amount of flammable carbon elements. In contrast, HAP, the major component of bone and tooth, is a kind of inorganic material with high thermal stability . As a result, they exhibit completely different combustion behaviors (Figure a,b).…”

Section: Resultsmentioning

confidence: 99%

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Secret Paper with Vinegar as an Invisible Security Ink and Fire as a Decryption Key for Information Protection

Chen

Zhu

Zhang

et al. 2019

Chemistry A European J

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Security inks based on photoluminescent materials are mostly investigated for security applications, such as information encryption and decryption, anti‐counterfeiting, and data storage. Although they are invisible to the naked eye under ambient light, they can be detected under ultraviolet or near‐infrared light. Herein, a new kind of secret paper made from network‐structured ultralong hydroxyapatite nanowires and cellulose fibers has been developed. White vinegar, a common cooking ingredient, is used as an invisible security ink. Covert information on the secret paper written with white vinegar is totally invisible under natural light, but it can be decrypted and clearly read after exposure to fire; the response time to fire is short (<10 s). The ways of writing on the secret paper are diverse by using various pens loaded with white vinegar.

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Section: Resultsmentioning

confidence: 99%

“…In contrast, HAP,t he major component of bone and tooth, [26] is a kind of inorganic material with high thermal stability. [27][28][29][30] As a result, they exhibit completely different combustion behaviors (Figure 4a,b).…”

Section: Resultsmentioning

confidence: 99%

Secret Paper with Vinegar as an Invisible Security Ink and Fire as a Decryption Key for Information Protection

Chen

Zhu

Zhang

et al. 2019

Chemistry A European J

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“…[16,26,27] Combining the advantages of chitosan and HAP,v arious kinds of HAP/chitosanc omposite porouss caffolds wered eveloped and investigated for applications in bone tissue engineering. [17] More importantly,t he highly flexible ultralong HAP nanowires (UHANWs) with lengths of several hundred micrometres were synthesized in our previous work, [32][33][34] and they exhibited ag reat potentiali nc onstructing varioust ypes of multifunctional materials with excellent mechanical properties, such as flexible fire-resistant ordered architectures, [35] highly flexible fire-resistant inorganic paper, [32] superhydrophobic and fire-resistantl ayered inorganic paper, [36] highly flexible multifunctional biopaper, [16,17] etc.T hus, the UHANWs are an ideal materialf or constructing biomimetic composite porous scaffoldsw ith enhanced mechanical properties and biological responses. [29][30][31] In this respect, 1D HAP nanostructures such as HAP whiskersa nd nanowires have obvious advantages in enhancing the mechanical properties of their composite scaffolds as compared with HAP nanorods.…”

Section: Introductionmentioning

confidence: 99%

Porous Nanocomposite Comprising Ultralong Hydroxyapatite Nanowires Decorated with Zinc‐Containing Nanoparticles and Chitosan: Synthesis and Application in Bone Defect Repair

Sun

Chen

et al. 2018

Chemistry A European J

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Hydroxyapatite nanowires exhibit a great potential in biomedical applications owing to their high specific surface area, high flexibility, excellent mechanical properties, and similarity to mineralized collagen fibrils of natural bone. In this work, zinc-containing nanoparticle-decorated ultralong hydroxyapatite nanowires (Zn-UHANWs) with a hierarchical nanostructure have been synthesized by a one-step solvothermal method. The highly flexible Zn-UHANWs exhibit a hierarchical rough surface and enhanced specific surface area as compared with ultralong hydroxyapatite nanowires (UHANWs). To evaluate the potential application of Zn-UHANWs in bone regeneration, the biomimetic Zn-UHANWs/chitosan (CS) (Zn-UHANWs/CS) composite porous scaffold with 80 wt % Zn-UHANWs was prepared by incorporating Zn-UHANWs into the chitosan matrix by the freeze-drying process. The as-prepared Zn-UHANWs/CS composite porous scaffold exhibits enhanced mechanical properties, highly porous structure, and excellent water retention capacity. In addition, the Zn-UHANWs/CS porous scaffold has a good biodegradability with the sustainable release of Zn, Ca, and P elements in aqueous solution. More importantly, the Zn-UHANWs/CS porous scaffold can promote the osteogenic differentiation of rat bone marrow derived mesenchymal stem cells and facilitate in vivo bone regeneration as compared with the pure CS porous scaffold or UHANWs/CS porous scaffold. Thus, both the Zn-UHANWs and Zn-UHANWs/CS porous scaffold developed in this work are promising for application in bone defect repair.

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“…[3,17] The as-prepared highly flexible and fire-resistant HAP nanowire paper can be used for writing and printing, and is promising for the permanent and safe storage of information, such as archives and important documents.T he asprepared HAP-nanowires-based paper can also be functionalized to be an ew kind of specialtyp aper for various applications, such as the superhydrophobic fire-resistant paper,a ntibacterialf ire-resistant paper,b iomedicalb iopaper,a nd recyclable testing paper. [18][19][20][21] However,t he low tensiles trength and high-temperature-induced friability of the single-phase HAP nanowirep aper restrict its applications.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Assembly of Monodisperse Hydroxyapatite Nanowires and Construction of High‐Strength Fire‐Resistant Inorganic Paper with High‐Temperature Flexibility

Zhu

Jiang

et al. 2017

ChemNanoMat

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High‐strength flexible inorganic paper with fire‐resistant and adiabatic properties is highly demanded in various high‐temperature applications. However, constructing inorganic paper that not only has high strength and high flexibility at room temperature but also can prevent the high‐temperature‐induced friability is still a great challenge. Inspired by the hierarchical structure and excellent mechanical properties of the tooth enamel, we have developed a systematic approach for the bottom‐up fabrication of multi‐hierarchical fire‐resistant hydroxyapatite (HAP) nanowire paper with balanced tensile strength and flexibility that includes four steps: (1) the synthesis of monodisperse HAP nanowires from the molecular level to the nanoscale; (2) the self‐assembly of HAP nanowires into long fibers and two‐dimensional (2D) nanowire networks from the nanoscale to the mesoscale; (3) the layered assembly of 2D nanowire networks into the highly flexible high‐strength fire‐resistant paper from the mesoscale to the macroscale; (4) reinforcing the HAP nanowire paper with inorganic additives to enhance the tensile strength and to overcome the high‐temperature‐induced pulverization. By adopting this strategy, the mechanical properties of the fire‐resistant HAP nanowire paper are greatly improved. The experimental results show that the tensile strength of the as‐prepared HAP nanowires‐based inorganic paper is greatly enhanced to ≈15 MPa, which is close to that of the commercial copying paper, and the A4‐sized HAP nanowires‐based inorganic paper is highly flexible and can be directly printed using a commercial printer. Owing to the synergistic effect of all components and the unique hierarchical structure, the as‐prepared fire‐resistant HAP nanowire paper can also preserve well its high flexibility even under high‐temperature conditions.

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Highly Flexible Superhydrophobic and Fire-Resistant Layered Inorganic Paper

Cited by 122 publications

References 68 publications

Secret Paper with Vinegar as an Invisible Security Ink and Fire as a Decryption Key for Information Protection

Secret Paper with Vinegar as an Invisible Security Ink and Fire as a Decryption Key for Information Protection

Porous Nanocomposite Comprising Ultralong Hydroxyapatite Nanowires Decorated with Zinc‐Containing Nanoparticles and Chitosan: Synthesis and Application in Bone Defect Repair

Hierarchical Assembly of Monodisperse Hydroxyapatite Nanowires and Construction of High‐Strength Fire‐Resistant Inorganic Paper with High‐Temperature Flexibility

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