Ultra-Strong, Ultra-Tough, Transparent, and Sustainable Nanocomposite Films for Plastic Substitute

Guan, Qing‐Fang; Ling, Zhang‐Chi; Han, Zhi‐Yong; Yang, Huai‐Bin; Yu, Shu‐Hong

doi:10.1016/j.matt.2020.07.014

Cited by 97 publications

(71 citation statements)

References 44 publications

(46 reference statements)

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“…Such a high toughness value is comparable with the ultrastrong and ultratough nanocomposite film from a nanoclay and bacterial cellulose prepared by an in situ biosynthesis, which showed a toughness of 17.71 MJ/m 3 . 38 On the other hand, the toughness of the TO-CNF/MTM nanocomposites at 5 wt % MTM was 10 ± 0.4 MJ/m 3 , only 9% higher than that for the neat TO-CNF nanopaper, although it showed a higher strength and modulus owing to the strong reinforcing effect of homogeneous dispersed MTM tactoids in the composite as compared to the Q-CNF/MTM film. The reduced interfacial sliding between TO-CNF and MTM tactoids in the TO-CNF/MTM films during failure resulted in the decreased strain-to-failure.…”

Section: Resultsmentioning

confidence: 86%

Surface Charges Control the Structure and Properties of Layered Nanocomposite of Cellulose Nanofibrils and Clay Platelets

Wang

Berglund

et al. 2021

ACS Appl. Mater. Interfaces

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The interfacial bonding and structure at the nanoscale in the polymer–clay nanocomposites are essential for obtaining desirable material and structure properties. Layered nanocomposite films of cellulose nanofibrils (CNFs)/montmorillonite (MTM) were prepared from the water suspensions of either CNFs bearing quaternary ammonium cations (Q-CNF) or CNFs bearing carboxylate groups (TO-CNF) with MTM nanoplatelets carrying net surface negative charges by using vacuum filtration followed by compressive drying. The effect of the ionic interaction between cationic or anionic charged CNFs and MTM nanoplatelets on the structure, mechanical properties, and flame retardant performance of the TO-CNF/MTM and Q-CNF/MTM nanocomposite films were studied and compared. The MTM nanoplatelets were well dispersed in the network of TO-CNFs in the form of nanoscale tactoids with the MTM content in the range of 5–70 wt %, while an intercalated structure was observed in the Q-CNF/MTM nanocomposites. The resulting TO-CNF/MTM nanocomposite films had a better flame retardant performance as compared to the Q-CNF/MTM films with the same MTM content. In addition, the effective modulus of MTM for the TO-CNF/MTM nanocomposites was as high as 129.9 GPa, 3.5 times higher than that for Q-CNF/MTM (37.1 GPa). On the other hand, the Q-CNF/MTM nanocomposites showed a synergistic enhancement in the modulus and tensile strength together with strain-to-failure and demonstrated a much better toughness as compared to the TO-CNF/MTM nanocomposites.

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Section: Resultsmentioning

confidence: 86%

Surface Charges Control the Structure and Properties of Layered Nanocomposite of Cellulose Nanofibrils and Clay Platelets

Wang

Berglund

et al. 2021

ACS Appl. Mater. Interfaces

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“…It also has higher mechanical properties, a polymerization degree that can reach 8000, and a high crystallinity of over 70%. [ 8,11 ]…”

Section: Cellulose Properties and Green Molecular Systemsmentioning

confidence: 99%

“…It also has higher mechanical properties, a polymerization degree that can reach 8000, and a high crystallinity of over 70%. [8,11] Within cellulose microfibrils, the places in which molecular chains are arranged in highly ordered patterns are called crystalline regions, and the places in which they are disordered are called amorphous regions. Usually, the structure and distribution of such crystalline and disordered regions depend on both the cellulose raw material and the pretreatment methods.…”

Section: Structural Features Of Cellulosementioning

confidence: 99%

“…Due to the presence of many polar hydroxyl groups in cellulose, inorganic (metal oxides) and organic materials (carbon materials), 2D layered materials, and conductive polymers can be incorporated into the molecular networks of cellulose to develop highly efficient, conductive, and electromagnetic shielding membranes. [11,88,[103][104][105] For example, Cui et al [105] used vacuum-assisted filtration to adjust the assembly structure between cellulose molecules and 2D d-Ti 3 C 2 T x to fabricate a flexible cellulose/d-Ti 3 C 2 T x electromagnetic shielding membrane with a high electromagnetic interference performance of 42.7 dB at a frequency of 2-18 Hz (Figure 5a). As shown in Figure 5b, some of the incident electromagnetic waves irradiated on the cellulose/d-Ti 3 C 2 T x film were reflected, while other parts were dissipated via static electricity and heat.…”

Section: Functional Membranesmentioning

confidence: 99%

“…[ 6,7 ] Cellulose is the most abundant biomass material derived from plants or biosynthesized by microorganisms like Acetobacter xylinum , and it has been ubiquitously used to manufacture printing paper, packaging, textiles, modern strengthening materials, healthcare products, and smart chips. [ 8–12 ] Due to the presence of hydrogen bonds between the macromolecular chains of cellulose, its materials exhibit high mechanical strength and universal solvent resistance. Nevertheless, although cellulosic materials have shown great application potential due to their rich hydroxyl, physical flexibility, ease of processing, and biodegradability, [ 13–22 ] their insolubility makes both their chemical/physical modification and self‐assembly at the molecular level or nanoscale difficult.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Molecular‐Scale Design of Cellulose‐Based Functional Materials for Flexible Electronic Devices

Pang

Jiang

Zhou

et al. 2020

Adv Elect Materials

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Structural design and self‐assembly at the molecular level provide feasible strategies for constructing materials with novel and unique properties. Cellulose is one of the most abundant bioresources and is renewable, biodegradable, biocompatible, and environmentally friendly. The formation of hydrogen‐bonding networks between the cellulose molecular chains on the one hand gives cellulose a rigid crystalline region and high mechanical strength and on the other hand it causes inconvenience to material design based on the molecular scale. The emergence of eco‐friendly solvents such as ionic liquids and alkali/urea solutions breaks the hydrogen bonds and allows the design of various cellulose‐based functional materials, such as membranes, gels, fibers, and nano/microspheres via structural optimization and molecular self‐assembly. Such functional materials have promising applications in flexible electronic devices, such as electrochemical energy storage devices, sensors, biomimetic electronic skins, and optoelectronic devices. In this review, green solvents for cellulose, the dissolution–recombination process, molecular self‐assembly strategies, advanced applications, and future development prospects for high‐performance cellulose‐based functional materials with unique structures are presented.

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Sustainable 3D Structural Binder for High‐Performance Supercapacitor by Biosynthesis Process

Guan

Ling

Han

et al. 2021

Adv Funct Materials

Self Cite

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Flexible supercapacitors represent an attractive technology for the next generation of wearable consumer electronics as power sources but usually suffer from relatively low energy density. It is highly desired to construct high-performance electrodes for the practical applications of supercapacitors. Here, inspired by the natural structure of the spider web, an elaborate design of binder is reported through a biosynthesis process to construct flexible electrodes with both excellent mechanical properties and electrochemical performance. Through this strategy, a spider-web-inspired 3D structural binder enables large ion-accessible surface area and high packing density of active electrode material as well as efficient ion transport pathways. As a result, a high areal capacitance of 4.62 F cm -2 and a high areal energy density of 0.18 mW h cm -2 is achieved in the composite electrodes and symmetric supercapacitors, respectively, demonstrating a promising potential to construct flexible energy storage devices for diverse practical applications.

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Ultra-Strong, Ultra-Tough, Transparent, and Sustainable Nanocomposite Films for Plastic Substitute

Cited by 97 publications

References 44 publications

Surface Charges Control the Structure and Properties of Layered Nanocomposite of Cellulose Nanofibrils and Clay Platelets

Surface Charges Control the Structure and Properties of Layered Nanocomposite of Cellulose Nanofibrils and Clay Platelets

Molecular‐Scale Design of Cellulose‐Based Functional Materials for Flexible Electronic Devices

Sustainable 3D Structural Binder for High‐Performance Supercapacitor by Biosynthesis Process

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