Physico-mechanical properties of graphene oxide/poly(vinyl alcohol) composites

2019 ◽  
Vol 297 (3) ◽  
pp. 485-491 ◽  
Author(s):  
Tatiana V. Panova ◽  
Anna A. Efimova ◽  
Aleksandr V. Efimov ◽  
Anna K. Berkovich
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol

scholarly journals Regulation Mechanism of Graphene Oxide on the Structure and Mechanical Properties of Bio-Based Gel-Spun Lignin/Poly (Vinyl Alcohol) Fibers

2021 ◽  
Author(s):  
Yanhong Jin ◽  
Yuanyuan Jing ◽  
Wenxin Hu ◽  
Jiaxian Lin ◽  
Yu Cheng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Graphene Oxide ◽  
Young’S Modulus ◽  
Vinyl Alcohol ◽  
Young's Modulus ◽  
Lignin Content ◽  
Poly Vinyl Alcohol ◽  
Regulation Mechanism ◽  
Composite Fibers

Abstract Lignin has been used as a sustainable and eco-friendly filler in composite fibers. However, lignin aggregation occurred at high lignin content, which significantly hindered the further enhancement of fiber performance. The incorporation of graphene oxide (GO) enhanced the mechanical properties of the lignin/poly(vinyl alcohol) (PVA) fibers and affected their structure. With the GO content increasing from 0 to 0.2%, the tensile strength of 5% lignin/PVA fibers increased from 491 MPa to 631 MPa, and Young's modulus increased from 5.91 GPa to 6.61 GPa. GO reinforced 30% lignin/PVA fibers also showed the same trend. The tensile strength increased from 455 MPa to 553 MPa, and Young's modulus increased from 5.39 GPa to 7 GPa. The best mechanical performance was observed in PVA fibers containing 5% lignin and 0.2% GO, which had an average tensile strength of 631 MPa and a Young’s modulus of 6.61 GPa. The toughness values of these fibers are between 9.9-15.6 J/g, and the fibrillar and ductile fracture microstructure were observed. Structure analysis of fibers showed that GO reinforced 5% lignin/PVA fibers had higher crystallinity, and evidence of hydrogen bonding among GO, lignin, and PVA in the gel fibers was revealed. Further, water resistance and swelling behavior of composite PVA fibers were studied to further evidence the structure change of composite fibers.

scholarly journals Anisotropic tough poly(vinyl alcohol)/graphene oxide nanocomposite hydrogels for potential biomedical applications

RSC Advances ◽  
2018 ◽  
Vol 8 (24) ◽  
pp. 13284-13291 ◽  
Author(s):  
Qiaomei Luo ◽  
Yangyang Shan ◽  
Xia Zuo ◽  
Jiaqi Liu
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Vinyl Alcohol ◽  
Biomedical Applications ◽  
Poly Vinyl Alcohol ◽  
Nanocomposite Hydrogel ◽  
Nanocomposite Hydrogels

Tough PVA/GO nanocomposite hydrogel with well-developed anisotropic microstructure and excellent mechanical properties.

Enhanced mechanical properties of poly(vinyl alcohol) nanocomposites with glucose-reduced graphene oxide

2013 ◽  
Vol 102-103 ◽  
pp. 15-18 ◽  
Author(s):  
Hui-Ling Ma ◽  
Youwei Zhang ◽  
Qi-Hui Hu ◽  
Shunlun He ◽  
Xiaofeng Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Reduced Graphene

scholarly journals GRAPHENE OXIDE REINFORCED POLY (VINYL ALCOHOL) NANOCOMPOSITE: FABRICATION AND CHARACTERIZATION FOR THERMAL AND MECHANICAL PROPERTIES INVESTIGATIONS

2019 ◽  
Vol 11 (4) ◽  
pp. 125-129
Author(s):  
Sami Makharza ◽  
Maryam Faroun ◽  
Mohammad Bawwab ◽  
Ibrahim Afaneh
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Vinyl Alcohol ◽  
Thermal Characteristics ◽  
Poly Vinyl Alcohol ◽  
Significant Finding ◽  
Thermal And Mechanical Properties ◽  
Scanning Calorimetry ◽  
Uniform Dispersion ◽  
Oxide Particles

We reported the fabrication of poly (vinyl alcohol) incorporated with two different sizes of graphene oxide particles. Scanning electron microscopy (SEM) revealed two sizes of graphene oxide, the first size is as prepared GO_300 nm and the second size is 100nm after hard sonication. The alteration in thermal and mechanical properties of PVA/ GO (5, 10, 15, 20%) nanocomposite compering with PVA are mainly due to the uniform dispersion of GO particles in the polymer matrix and huge interfacial interaction between PVA and GO sheets. Differential scanning calorimetry shows obvious changes in thermal characteristics of PVA after mixing with GO particles. The composite samples exhibit a significant finding at different concentrations and size distribution of GO.

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