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Search: WFRF:(Sugunan Abhilash) > (2020-2022) > Surfactant-Free Sta...

  • Zhao, WeiUppsala universitet,RISE,Material- och ytdesign,Fasta tillståndets elektronik,RISE Res Inst Sweden, SE-11486 Stockholm, Sweden (author)

Surfactant-Free Stabilization of Aqueous Graphene Dispersions Using Starch as a Dispersing Agent

  • Article/chapterEnglish2021

Publisher, publication year, extent ...

  • 2021-04-28
  • American Chemical Society,2021
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:ri-53478
  • https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-53478URI
  • https://doi.org/10.1021/acsomega.1c00699DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-446906URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Funding details: Stiftelsen för Strategisk Forskning, SSF, FID-15-0105; Funding text 1: This work was financially supported by the Swedish Foundation for Strategic Research (SSF, grant no. FID-15-0105) and BillerudKorsnäs AB. The authors thank Karin Hallstensson for support with the SEM/STEM imaging.
  • Attention to graphene dispersions in water with the aid of natural polymers is increasing with improved awareness of sustainability. However, the function of biopolymers that can act as dispersing agents in graphene dispersions is not well understood. In particular, the use of starch to disperse pristine graphene materials deserves further investigation. Here, we report the processing conditions of aqueous graphene dispersions using unmodified starch. We have found that the graphene content of the starch-graphene dispersion is dependent on the starch fraction. The starch-graphene sheets are few-layer graphene with a lateral size of 3.2 μm. Furthermore, topographical images of these starch-graphene sheets confirm the adsorption of starch nanoparticles with a height around 5 nm on the graphene surface. The adsorbed starch nanoparticles are ascribed to extend the storage time of the starch-graphene dispersion up to 1 month compared to spontaneous aggregation in a nonstabilized graphene dispersion without starch. Moreover, the ability to retain water by starch is reduced in the presence of graphene, likely due to environmental changes in the hydroxyl groups responsible for starch-water interactions. These findings demonstrate that starch can disperse graphene with a low oxygen content in water. The aqueous starch-graphene dispersion provides tremendous opportunities for environmental-friendly packaging applications. © 2021 American Chemical Society.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Sugunan, AbhilashRISE,Material- och ytdesign,RISE Res Inst Sweden, SE-11486 Stockholm, Sweden(Swepub:ri)AbhilashSu@ri.se (author)
  • Gillgren, ThomasBillerudKorsnäs AB, SE-71880 Frövi, Sweden (author)
  • Larsson, JohanBillerudKorsnäs AB, SE-71880 Frövi, Sweden (author)
  • Zhang, Zhi-BinUppsala universitet,Fasta tillståndets elektronik(Swepub:uu)zhizh813 (author)
  • Zhang, Shi-LiUppsala universitet,Fasta tillståndets elektronik(Swepub:uu)shizh725 (author)
  • Niklas, NordgrenRISE,Material- och ytdesign,RISE Res Inst Sweden, SE-11486 Stockholm, Sweden(Swepub:ri)NiklasNo@ri.se (author)
  • Sommertune, JensRISE,Material- och ytdesign,RISE Res Inst Sweden, SE-11486 Stockholm, Sweden(Swepub:ri)jens.sommertune@ri.se (author)
  • Ahniyaz, AnwarRISE,Material- och ytdesign,RISE Res Inst Sweden, SE-11486 Stockholm, Sweden(Swepub:ri)AnwarAh@ri.se (author)
  • RISEMaterial- och ytdesign (creator_code:org_t)

Related titles

  • In:ACS Omega: American Chemical Society6:18, s. 12050-120622470-1343

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