Polymer Nanocomposites of Surface‐Modified Graphene. I: Thermal and Electrical Properties of Poly(Vinyl Alcohol)/Aminoacid‐Functionalized Graphene

Extrinsic electrically conducting polymer composites are versatile materials for applications in sensors, electrical components, antistatic coatings, among others. The use of carbon‐based conducting loads, such as graphene, in polymer nanocomposites allows the manufacturing of suitable electrically...

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Bibliographic Details
Published in:Macromolecular symposia. 2019-02, Vol.383 (1), p.n/a
Main Authors: Lima, Thaíses B. S., Silva, Valdilene O., Araujo, Elmo S., Araujo, Patricia L. B.
Format: Article
Language:English
Subjects:
Addition polymerization
Additives
Alanine
Alcohol
Antistatics
Carbon
Conducting polymers
Dispersion
Electric components
electrical conductivity
Electrical properties
Electrical resistivity
FTIR
Graphene
Histidine
Nanocomposites
Paints
Phenylalanine
Polymer matrix composites
polymer nanocomposites
Polymers
Protective coatings
Sheets
thermal properties
Thermal stability
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Summary:Extrinsic electrically conducting polymer composites are versatile materials for applications in sensors, electrical components, antistatic coatings, among others. The use of carbon‐based conducting loads, such as graphene, in polymer nanocomposites allows the manufacturing of suitable electrically conducting films for a variety of applications. In our work, graphene sheets are covalently modified with histidine, phenylalanine, or beta‐alanine aminoacids, in order to improve dispersion and impart extrinsic conductivity to poly(vinyl alcohol) (PVA) films. The presence of organic groups in the surface of graphene sheets improved their dispersion in polymer matrices. In addition, such benign surface modifiers are suitable to produce environmentally friendly, electrically conducting loads for polymer nanocomposites. Our findings showed that aminoacid‐functionalized graphenes have good dispersability, resulting in semiconducting nanocomposite films with preserved thermal stability, suggesting that these carbon‐based nanoloads are suitable additives for PVA in applications including antistatic paints and coatings.
ISSN:1022-1360
1521-3900
DOI:10.1002/masy.201800051