Learning from nacre: Constructing polymer nanocomposites

Huang, Chuanjin; Cheng, Qunfeng

doi:10.1016/j.compscitech.2017.07.021

Cited by 88 publications

(56 citation statements)

References 134 publications

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“…[6][7][8][9][10][11][12][13] Although these nanofillers can improve the fracture toughness of epoxy, many processing problems remain unsolved. 14,15 For example, a small amount of TiO 2 improves the fracture toughness of epoxy by crack deflection and crack pinning, yet agglomeration of the TiO 2 nanoparticles limits further improvement of the fracture toughness. 3 The crack-bridging feature of CNTs contributes to the improved fracture toughness of epoxy nanocomposites by hindering the crack growth.…”

Section: Introductionmentioning

confidence: 99%

Inverse Nacre-like Epoxy-Graphene Layered Nanocomposites with Integration of High Toughness and Self-Monitoring

Peng

Huang

Cao

et al. 2020

Matter

Self Cite

106

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Inverse nacre-like epoxy-graphene layered nanocomposites inspired by nacre are fabricated via freeze casting. The epoxy-graphene nanocomposites show a toughening mechanism that incorporates crack deflection, branching, and interfacial friction, exhibiting excellent fracture toughness. Furthermore, due to the conductive properties of the continuous graphene-based scaffold, crack propagation can be monitored by detecting variable electrical resistance. The inverse nacre-like epoxy-graphene nanocomposites expand the application of traditional epoxy-graphene nanocomposites in the engineering design of wind devices and in the automotive industry, aerospace, and many other areas. In addition, the nanocomposite's ability to detect cracks could inspire the design of future nanocomposites with self-monitoring capabilities, thus making them more safe and secure.

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Section: Introductionmentioning

confidence: 99%

Inverse Nacre-like Epoxy-Graphene Layered Nanocomposites with Integration of High Toughness and Self-Monitoring

Peng

Huang

Cao

et al. 2020

Matter

Self Cite

106

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“…This natural material has approximately 200–900 nm thickness incorporated into a 5 vol% of a biopolymer matrix of about 10–50 nm thickness. It consists of an insoluble chitin sheet between a layer of soluble proteins, and shows a brick-and-mortar structure, leading to a synergistic mechanical performance [ 13 , 15 , 17 , 18 , 19 ] and exceptional stability [ 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Nacre-Mimetic Green Flame Retardant: Ultra-High Nanofiller Content, Thin Nanocomposite as an Effective Flame Retardant

et al. 2020

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A nacre-mimetic brick-and-mortar structure was used to develop a new flame-retardant technology. A second biomimetic approach was utilized to develop a non-flammable elastomeric benzoxazine for use as a polymer matrix that effectively adheres to the hydrophilic laponite nanofiller. A combination of laponite and benzoxazine is used to apply an ultra-high nanofiller content, thin nanocomposite coating on a polyurethane foam. The technology used is made environmentally friendly by eliminating the need to add any undesirable flame retardants, such as phosphorus additives or halogenated compounds. The very-thin coating on the polyurethane foam (PUF) is obtained through a single dip-coating. The structure of the polymer has been confirmed by proton nuclear magnetic resonance spectroscopy (1H NMR) and Fourier transform infrared spectroscopy (FTIR). The flammability of the polymer and nanocomposite was evaluated by heat release capacity using microscale combustion calorimetry (MCC). A material with heat release capacity (HRC) lower than 100 J/Kg is considered non-ignitable. The nanocomposite developed exhibits HRC of 22 J/Kg, which is well within the classification of a non-ignitable material. The cone calorimeter test was also used to investigate the flame retardancy of the nanocomposite’s thin film on polyurethane foam. This test confirms that the second peak of the heat release rate (HRR) decreased 62% or completely disappeared for the coated PUF with different loadings. Compression tests show an increase in the modulus of the PUF by 88% for the 4 wt% coating concentration. Upon repeated modulus tests, the rigidity decreases, approaching the modulus of the uncoated PUF. However, the effect of this repeated mechanical loading does not significantly affect the flame retarding performance.

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“…The production of novel polymeric nanocomposites have been widely studied by the current applications on nanosized inorganic fillers in the food packaging field, barrier applications, sensors, antimicrobial, conductive, coatings, antiballistic products and other materials [1][2][3][4] . The new generation of these polymer nanocomposites contains nitrides (TiN, CrN, ZrN, BN), carbides (WC, SiC, B 4 C), borides (WB, ZrB 2 , TiB 2 , CrB 2 ), metal oxides (Al 2 O 3 , Fe 3 O 2 , MgO, CeO 2 , TiO 2 , Y 2 O 3 , SiO 2 , ZrO 2 ), carbon nanotubes, cellulose nanofibrils, and other kind of nanoparticles as disperse phase [5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

Poly (Methyl Methacrylate)-SiC Nanocomposites Prepared Through in Situ Polymerization

et al. 2018

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In this study, polymeric nanocomposites based on poly(methyl methacrylate) (PMMA) and silicon carbide (SiC) nanoparticles were prepared by radical mass polymerization in the presence of filler. Nanoparticles of SiC with and without surface treatment with organosilane were obtained .The nanocomposites were characterized by X-ray fluorescence (XRF), infrared spectroscopy (FTIR), thermogravimetry (TGA) and Field Emission Gun Scanning Electron Microscopy (FEG SEM) with an energy dispersive x-ray spectroscopy (EDS) detector. The produced nanocomposites showed welldispersed SiC incorporation in the PMMA matrix. The results pointed that the surface treatment on SiC fillers was successful on enhancing the interaction between the organic matrix and the inorganic filler.

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Learning from nacre: Constructing polymer nanocomposites

Cited by 88 publications

References 134 publications

Inverse Nacre-like Epoxy-Graphene Layered Nanocomposites with Integration of High Toughness and Self-Monitoring

Inverse Nacre-like Epoxy-Graphene Layered Nanocomposites with Integration of High Toughness and Self-Monitoring

Nacre-Mimetic Green Flame Retardant: Ultra-High Nanofiller Content, Thin Nanocomposite as an Effective Flame Retardant

Poly (Methyl Methacrylate)-SiC Nanocomposites Prepared Through in Situ Polymerization

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