Graphene oxide: An effective ionic conductivity promoter for phosphoric acid-doped poly (vinyl alcohol) gel electrolytes

Polymer ◽  
2019 ◽  
Vol 184 ◽  
pp. 121908 ◽  
Author(s):  
Saeideh Alipoori ◽  
M.M. Torkzadeh ◽  
M.H. Mohamadzadeh Moghadam ◽  
Saeedeh Mazinani ◽  
Seyed Hamed Aboutalebi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Ionic Conductivity ◽  
Phosphoric Acid ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Gel Electrolytes

High barrier graphene oxide nanosheet/poly(vinyl alcohol) nanocomposite films

2012 ◽  
Vol 409-410 ◽  
pp. 156-163 ◽  
Author(s):  
Hua-Dong Huang ◽  
Peng-Gang Ren ◽  
Jun Chen ◽  
Wei-Qin Zhang ◽  
Xu Ji ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Vinyl Alcohol ◽  
Nanocomposite Films ◽  
Poly Vinyl Alcohol ◽  
Graphene Oxide Nanosheet

Poly(Vinyl Alcohol) Enhances Acetylation of Ascorbic Acid in Superparamagnetic Graphene Oxide Nanoparticles Ultrasonically Complexed with Acetylsalicylic Acid

2020 ◽  
Vol 2 (8) ◽  
pp. 3663-3673
Author(s):  
Anastasia Tkach ◽  
Uladzimir Fiadosenka ◽  
Aliaksandr Burko ◽  
Hanna Bandarenka ◽  
Anna Matsukovich ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Graphene Oxide ◽  
Acetylsalicylic Acid ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Oxide Nanoparticles

Performance of Sulfonated Poly(Vinyl Alcohol)/Graphene Oxide Polyelectrolytes for Direct Methanol Fuel Cells

2020 ◽  
Vol 8 (7) ◽  
pp. 2000124
Author(s):  
Oscar Gil-Castell ◽  
Óscar Santiago ◽  
Borja Pascual-Jose ◽  
Emilio Navarro ◽  
Teresa J. Leo ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Fuel Cells ◽  
Vinyl Alcohol ◽  
Direct Methanol Fuel Cells ◽  
Poly Vinyl Alcohol ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Sulfonated Poly

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.

Sign in / Sign up

Export Citation Format

Share Document