kth.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Polyelectrolyte-Assisted Dispersions of Reduced Graphite Oxide Nanoplates in Water and Their Gas-Barrier Application
Politecn Torino, Dipartimento Sci Applicata & Tecnol, Alessandria Campus, I-15121 Alessandria, Italy..ORCID iD: 0000-0001-6472-1382
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Coating Technology.ORCID iD: 0000-0003-4388-8970
AVANZARE Innovac Tecnol SL, Navarrete 26370, La Rioja, Spain..
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology.ORCID iD: 0000-0001-9088-1064
Show others and affiliations
2021 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 13, no 36, p. 43301-43313Article in journal (Refereed) Published
Abstract [en]

Dispersion of graphene and related materials in water is needed to enable sustainable processing of these 2D materials. In this work, we demonstrate the capability of branched polyethylenimine (BPEI) and polyacrylic acid (PAA) to stabilize reduced graphite oxide (rGO) dispersions in water. Atomic force microscopy colloidal probe measurements were carried out to investigate the interaction mechanisms between rGO and the polyelectrolytes (PEs). Our results show that for positive PEs, the interaction appears electrostatic, originating from the weak negative charge of graphene in water. For negative PEs, however, van der Waals forces may result in the formation of a PE shell on rGO. The PE-stabilized rGO dispersions were then used for the preparation of coatings to enhance gas barrier properties of polyethylene terephthalate films using the layer-by-layer self-assembly. Ten bilayers of rGO(BPEI)/rGO(PAA) resulted in coatings with excellent barrier properties as demonstrated by oxygen transmission rates below detection limits [<0.005 cm(3)/(m(2) day atm)]. The observed excellent performance is ascribed to both the high density of the deposited coating and its efficient stratification. These results can enable the design of highly efficient gas barrier solutions for demanding applications, including oxygen-sensitive pharmaceutical products or flexible electronic devices.

Place, publisher, year, edition, pages
American Chemical Society (ACS) , 2021. Vol. 13, no 36, p. 43301-43313
Keywords [en]
water-dispersion of graphene, polyelectrolyte, rGO, gas barrier, layer-by-layer, single stagnation point adsorption re ectometry
National Category
Materials Chemistry Physical Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-303054DOI: 10.1021/acsami.1c08889ISI: 000697282300092PubMedID: 34474558Scopus ID: 2-s2.0-85115110553OAI: oai:DiVA.org:kth-303054DiVA, id: diva2:1600896
Note

QC 20211006

Available from: 2021-10-06 Created: 2021-10-06 Last updated: 2022-06-25Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMedScopus

Authority records

Benselfelt, TobiasHamedi, MahiarWågberg, Lars

Search in DiVA

By author/editor
Maddalena, LorenzaBenselfelt, TobiasHamedi, MahiarFina, AlbertoWågberg, Lars
By organisation
Coating TechnologyFibre TechnologyFibre- and Polymer Technology
In the same journal
ACS Applied Materials and Interfaces
Materials ChemistryPhysical Chemistry

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 48 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf