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Gas barrier polymer nanocomposite films prepared by graphene oxide encapsulated polystyrene microparticles
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Merritt, Steven, Wemyss, Alan M., Farris, Stefano, Patole, Samson, Patias, Georgios, Haddleton, David M., Shollock, Barbara A. and Wan, Chaoying (2020) Gas barrier polymer nanocomposite films prepared by graphene oxide encapsulated polystyrene microparticles. ACS Applied Polymer Materials, 2 (2). pp. 725-731. doi:10.1021/acsapm.9b01041 ISSN 2637-6105.
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WRAP-gas-barrier-polymer-nanocomposite-films-graphen-oxide-mircorparticles-Wan-2020.pdf - Accepted Version - Requires a PDF viewer. Download (1392Kb) | Preview |
Official URL: http://dx.doi.org/10.1021/acsapm.9b01041
Abstract
The dispersion and orientation of two-dimensional (2D) inorganic nanoplatelets in polymers are technical challenges faced in polymer nanocomposite manufacturing. This work demonstrates 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. Briefly, few-layered GO nanoplatelets encapsulated polystyrene (PS) microparticles were synthesized by a Pickering suspension polymerization method. The synthesis conditions, morphologies, and barrier properties of the GO encapsulated PS spheres and the melt-compressed films are characterized. The addition of salt induces flocculation of GO onto the surface of the styrene monomer droplet, resulting in the formation of a multilayered GO shell as well as the sedimenting of the PS/GO particles during polymerization. The obtained GO encapsulated PS microspheres were purified, dried, and melt-compressed to form composite films. The oxygen permeability (expressed as transmission rate) of the PS/GO composite film containing 2 wt % GO was 526.02 ± 55.78 cm3 m–2 24 h–1—a reduction of 96% relative to the PS control film and 34% lower than the solution mixed PS/GO composite film. This indicates that the encapsulated PS spheres act as an effective carrier to facilitate the dispersion of GO. The orientation was realized by the following melt-compression process, which creates tortuous pathways hindering the permeation of gases through the PS matrix.
| Item Type: | Journal Article | |||||||||
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| Subjects: | Q Science > QC Physics Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TP Chemical technology |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) |
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| Library of Congress Subject Headings (LCSH): | Electronic apparatus and appliances -- Plastic embedment, Graphene , Graphene -- Oxidation, Polymerization, Polymers, Nanocomposites (Materials) | |||||||||
| Journal or Publication Title: | ACS Applied Polymer Materials | |||||||||
| Publisher: | American Chemical Society | |||||||||
| ISSN: | 2637-6105 | |||||||||
| Official Date: | 14 February 2020 | |||||||||
| Dates: |
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| Volume: | 2 | |||||||||
| Number: | 2 | |||||||||
| Page Range: | pp. 725-731 | |||||||||
| DOI: | 10.1021/acsapm.9b01041 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Reuse Statement (publisher, data, author rights): | “This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Polymer Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see [insert ACS Articles on Request author-directed link to Published Work, see http://pubs.acs.org/page/policy/articlesonrequest/index.html].” | |||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||
| Date of first compliant deposit: | 15 January 2020 | |||||||||
| Date of first compliant Open Access: | 15 January 2020 | |||||||||
| RIOXX Funder/Project Grant: |
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