Exfoliation of Graphene Oxide in Nanocomposites Based on Polyvinyl Alcohol

• Published in: Glass physics and chemistry Vol. 49; no. 1; pp. 98 - 100
• Main Authors: Kozlov, G. V., Dolbin, I. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-02-2023; Springer Nature B.V
• Subjects: Aggregates; Brief Message; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composites; Exfoliation; Glass; Graphene; Materials Science; Nanocomposites; Natural Materials; Physical Chemistry; Plates; Polymers; Polyvinyl alcohol; degree of enhancement; graphene oxide; nanocomposite; intercalation; exfoliation; structure
• ISSN: 1087-6596; 1608-313X
• DOI: 10.1134/S1087659622600880

The features of the formation of two main types (intercalated and exfoliated) of the structure of graphene oxide aggregates (2D nanofiller) in the polymer matrix of the nanocomposite are considered. In contrast to organoclay, where these types of structures of aggregates (tactoids) are determined by the number of its individual plates in a tactoid, for graphene oxide, the type of structure is controlled by the presence or absence of polymer layers between the plates of the 2D nanofiller. The presence of such layers determines the intercalated structure of graphene oxide tactoids, while the absence determines the exfoliated structure. It is assumed that the removal of the polymer from the space between the plates is due to the strong interactions of the graphene oxide plates due to their high specific surface area.