Mechanically strong multifunctional three-dimensional crosslinked aramid nanofiber/reduced holey graphene oxide and aramid nanofiber/reduced holey graphene oxide/polyaniline hydrogels and derived films

Nanoscale ◽  
2021 ◽  
Author(s):  
Yubo Zou ◽  
Zeyu Chen ◽  
Zhiyuan Peng ◽  
Chuying Yu ◽  
Wenbin Zhong
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Mechanical Strength ◽  
Three Dimensional ◽  
Covalent Bonds ◽  
High Mechanical Strength

To endow high mechanical strength and thermal stability aramid nanofiber (ANF) with novel functionality will lead to great applications. Herein, a strategy to generate covalent-bonds among components towards obtaining the...

scholarly journals Expanded graphene oxide fibers with high strength and increased elongation

RSC Advances ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 4198-4202 ◽  
Author(s):  
Ashok D. Ugale ◽  
LinLin Chi ◽  
Min-Kyu Kim ◽  
Sudong Chae ◽  
Jae-Young Choi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Mechanical Strength ◽  
Basal Plane ◽  
High Strength ◽  
Interplanar Distance ◽  
High Mechanical Strength ◽  
Plane Interaction

The increased interplanar distance between the EGO sheets favored the edge-to-edge than basal plane interaction within the fiber, resulting in high mechanical strength (492 MPa) and increased elongation (6.1%).

Preparation and Properties of Graphene Oxide-Modified Anti-UV Waterborne Polyurethane Nanocomposites

NANO ◽  
2020 ◽  
Vol 15 (01) ◽  
pp. 2050005
Author(s):  
Xingyuan Ma ◽  
Mingrui Zhang
Keyword(s):  
Thermal Stability ◽  
Tensile Strength ◽  
Graphene Oxide ◽  
Absorption Rate ◽  
Three Dimensional ◽  
Waterborne Polyurethane ◽  
Chain Extender ◽  
Functional Coating ◽  
Coating Materials ◽  
Polyurethane Nanocomposites

In this present study, graphene oxide (GO) was used as a secondary chain extender and a functional modification assistant to fabricate a three-dimensional nanocomposite (GO-WPU) with waterborne polyurethane (WPU) through the prepolymer dispersion. The tensile strength and elastic modulus of GO-WPU with 0.2[Formula: see text]wt.% GO content, compared with those of pure WPU, increase by 170.38% and 50.9%, respectively. Even with a small amount of GO content added, the ultraviolet absorption rate significantly increased, whereas the ultraviolet transmittance decreased significantly. Other properties such as thermal stability and so on were also much enhanced. These results suggested that the functional nanocomposite GO-WPU prepared through the prepolymer dispersion will be an effective fabrication approach and have a wider scope of applications in functional coating materials and film materials.

Biocompatible electrospinning poly(vinyl alcohol) nanofibres embedded with graphene-based derivatives with enhanced conductivity, mechanical strength and thermal stability

RSC Advances ◽  
2014 ◽  
Vol 4 (99) ◽  
pp. 56373-56384 ◽  
Author(s):  
Yuan-Hsiang Yu ◽  
Chih-Chieh Chan ◽  
Yu-Chia Lai ◽  
Yan-Yu Lin ◽  
Ying-Chieh Huang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Mechanical Strength ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Modified Graphene Oxide ◽  
Electrospun Nanofibres ◽  
Modified Graphene ◽  
Enhanced Conductivity

Biocompatible poly(vinyl alcohol) nanocomposite electrospun nanofibres embedded with glycine-modified graphene oxide and nanogold-deposited graphene oxide with substantially enhanced conductivity, mechanical strength, and thermal stability.

Synthesis of Polyacetylene-like Modified Graphene Oxide Aerogel and Its Enhanced Electrical Properties

2019 ◽  
Author(s):  
Enrico Greco ◽  
Jing Shang ◽  
jiali zhu ◽  
Tong Zhu
Keyword(s):  
Graphene Oxide ◽  
Three Dimensional ◽  
Single Layer ◽  
Internal Surface ◽  
Solid Material ◽  
Single Layer Graphene ◽  
Covalent Bonds ◽  
Surface Areas ◽  
Modified Graphene Oxide ◽  
The Individual

<p>A graphene-based or carbon-based aerogel is a three-dimensional (3D) solid material in which the carbon atoms are arranged in a sheet-like nanostructure. In this study, we report the synthesis of low-density polymer-modified aerogel monoliths by 3D macro-assemblies of graphene oxide sheets that exhibit significant internal surface areas (982 m<sup>2</sup>/g) and high electrical conductivity (∼0.1 to 1 × 10<sup>2</sup> S/cm). Different types of materials were prepared to obtain a single monolithic solid starting from a suspension of single-layer graphene oxide (GO) sheets, and a polymer, made from the precursors 4-carboxybenzaldehyde and polyvinyl alcohol. These materials were used to cross-link the individual sheets by covalent bonds, resulting in wet-gels that were supercritically dried and then, in some cases, thermally reduced to yield graphene aerogel composites. The average densities were approaching 15-20 mg/cm<sup>3</sup>. This approach allowed for the modulation of distance between the sheets, pore dimension, surface area, and related properties. This specific GO/Polymer ratio has suitable malleability making it a viable candidate for use in conductivity 3D printing; it also has other properties suitable for energy storage, catalysis, sensing and biosensing applications, bioelectronics, and superconductors.</p>

Functional reduced graphene oxide-based membranes with selective ion transport channels for zwitterionic ions separation based on the pH gradient

Nanoscale ◽  
2018 ◽  
Vol 10 (3) ◽  
pp. 1119-1128 ◽  
Author(s):  
Yu Wu ◽  
Hongyun Ji ◽  
Feng Yang ◽  
Yan Meng ◽  
Yujue Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Ion Channels ◽  
Mechanical Strength ◽  
Reduced Graphene Oxide ◽  
Interlayer Spacing ◽  
Ph Gradient ◽  
Free Standing ◽  
High Mechanical Strength ◽  
Reduced Graphene ◽  
Transport Channels

In this work, we report a method for the fabrication of a functional free-standing graphene membrane (FFGM) with high mechanical strength, enlarged interlayer spacing and ion channels for zwitterionic ions separation based on the inner pH gradient.

Sign in / Sign up

Export Citation Format

Share Document