Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 7, Issue 9, Pages 8215-8225Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b06306
Keywords
Conductive nanocomposites; Epoxy chloropropane; Modified BC; Polyaniline; Polyacrylamide
Categories
Funding
- Key Research and Development Program of Shaanxi Province-International Cooperation Project [2018KW-007]
- Key Research and Development Program of Shaanxi Province [2017GY154]
- Innovation Supporting Plan of Shaanxi Province-Innovation Research Team [2018TD-015]
- National Natural Science Foundation of China [21505089]
- Scientific Research Foundation (SRF) for Returned Overseas Chinese scholars (ROCS)
- State Education Ministry (SEM) [[2012]1707]
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Bacterial cellulose/polyaniline (BC/PANI) nanocomposites display many potential applications in various fields. However, the conductivity and mechanical properties remain a challenge. Here, we developed a novel method to prepare BC/PANI nanocomposites via the chemical grafting of PANI onto epoxy modified BC (EBC), followed by the grafting of polyacrylamide (PAM). For comparison, an in situ BC/PANI sample was also prepared. The grafting reaction between PANI and EBC and the retention of PANI on EBC were confirmed by FTIR, X-ray photoelectron spectroscopy, and elemental analysis. The cross-section morphology of BC transformed into a three-dimensional and continuous network structure with the incorporation of PANI. The effects of epoxy and PAM contents on the morphology, conductivity, and mechanical properties of PANI-g-EBC and PANI-g-EBC3/PAM nanocomposites were investigated. Compared with those of the in situ BC/PANI sample, the conductivity of PANI-g-EBC increased from 0.12 to 1.08 S/cm, while the stress increased from 8.18 to 18.47 MPa. With the addition of PAM, the conductivity of PANI-g-EBC/PAM nanocomposite paper further increased to 1.43 S/cm, and the stress increased to 47.94 MPa. The conductivity of PANI-g-EBC3/PAM nanocomposites only decreased from 1.43 to 1.36 S/cm after refolding 160 times. PANI-g-EBC and PANI-g-EBC3/PAM nanofibers could be blended with conventional plant cellulose fiber to prepare flexible and high strength conductive composite paper.
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