Graphene-based bionanocompositessyntehesis, physical and antimicrobial properties

Résumé

Polymer nanocomposites have emerged as an effective strategy to improve the structural and functional properties of polymers expanding their applications in different sectors such as construction, automobile or medical field. This approach can only be achieving in the presence of well-dispersed nanofillers and strong interfacial adhesion. Likewise, the design of biomaterials with antimicrobial properties is also of vital importance due to the increase in medical implants-associated infections. Therefore, the main objective of this PhD thesis has been to develop bionanocomposites that have a combination of good thermal, mechanical and permeability properties, as well as antimicrobial capacity. For this purpose, different nanostructures based on graphene have been synthesized and characterized to be used later as reinforcements in chitosan (CS) and poly(vinyl alcohol) (PVA) polymers through different routes.Throughout the reading of the different chapters, the synthesis methods used in the manufacture of these bionanocomposites are described and the results of the structural and morphological characterization are analyzed, as well as the mechanical, thermal, permeability and antimicrobial properties. The designed materials can serve as a basis for the development of potentially interesting components for transdermal drug administration and as wound dressings.