Gas Barrier Polymer Nanocomposite Films Prepared by Graphene Oxide Encapsulated Polystyrene Microparticles

Abstract

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Poly(glycolic acid) (PGA): a versatile building block expanding high performance and sustainable bioplastic applications

“…Interestingly, the barrier properties of unmodified PGA is much superior to cellulose nanocrystals (CNCs) loaded PLLA, low concentration (0.05 wt%) graphene oxide loaded Pullulan as well as 2 wt % loaded polystyrene graphene oxide composite. [79][80][81] This plausibly indicates that PGA has the capabilities in manifesting superior barrier performance if it is combined with 2D layered materials like graphene oxide etc. Further, high gas-barrier properties and high thermal processing temperature of PGA make it suitable to laminate with PET by co-extrusion or substitute PET films for food packaging applications, which will highly expand the applications of biodegradable polymers.…”

Nano-inspired oxygen barrier coatings for food packaging applications: An overview

“…Recent trends also suggest new schemes to control the detrimental effect of humidity on the oxygen barrier properties of water based coatings. Very recently, Merritt and co-workers demonstrated an effective way to facilitate the dispersion and orientation of graphene oxide (GO) nanoplatelets in a polymer matrix through encapsulating the polymer within a nanoplatelet shell (Merritt et al, 2020). In particular, few-layered GO nanoplatelets encapsulated polystyrene (PS) microparticles were synthesized by a Pickering suspension polymerization method, which led to a dramatic increase of the oxygen barrier performance.…”

Polymer particles armored with cobalt oxide nanosheets for the catalytic degradation of bisphenol A

“…[4][5][6] Many research groups, including our own, have used graphene oxide (GO) nanosheets to stabilize oil-in-water emulsions, with more recent efforts towards modifying the surface of the nanosheets to enable them to stabilize other fluid-fluid combinations (e.g., ionic liquid-water, ionic liquid-oil, oil-oil, etc.). [7][8][9][10][11][12][13][14][15][16][17] We have also recently demonstrated that transition metal carbide (MXene) and transition metal oxide (cobalt oxide) nanosheets can stabilize oil-in-water emulsions, if first flocculated by simple inorganic salt such as NaCl. 18,19 Compared to GO, these inorganic 2D surfactants are expected to not only provide kinetic stability to the emulsion, but to also impart favorable performance properties to any composite structures formed.…”

“…). 7–17 We have also recently demonstrated that transition metal carbide (MXene) and transition metal oxide (cobalt oxide) nanosheets can stabilize oil-in-water emulsions, if first flocculated by simple inorganic salt such as NaCl. 18,19 Compared to GO, these inorganic 2D surfactants are expected to not only provide kinetic stability to the emulsion, but to also impart favorable performance properties to any composite structures formed.…”