Conductive bacterial cellulose-polyaniline blends: Influence of the matrix and synthesis conditions

Emanuel Alonso; Marisa Faria; Faranak Mohammadkazemi; Matic Resnik; Artur Ferreira; Nereida Cordeiro

doi:10.1016/j.carbpol.2017.12.025

Conductive bacterial cellulose-polyaniline blends: Influence of the matrix and synthesis conditions

Carbohydr Polym. 2018 Mar 1:183:254-262. doi: 10.1016/j.carbpol.2017.12.025. Epub 2017 Dec 16.

Authors

Emanuel Alonso¹, Marisa Faria¹, Faranak Mohammadkazemi², Matic Resnik³, Artur Ferreira⁴, Nereida Cordeiro⁵

Affiliations

¹ Faculty of Science and Engineering, University of Madeira, 9000-390 Funchal, Portugal.
² Department of Biosystems, Faculty of New Technologies Engineering, Shadid Beheshti University, Science and Research Campus, Zirab, Savadkooh, Mazandaram, Iran.
³ Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
⁴ CICECO - Aveiro Institute of Materials, Águeda School of Technology and Management, University of Aveiro, 3810-193 Aveiro, Portugal.
⁵ Faculty of Science and Engineering, University of Madeira, 9000-390 Funchal, Portugal. Electronic address: ncordeiro@staff.uma.pt.

PMID: 29352882
DOI: 10.1016/j.carbpol.2017.12.025

Abstract

Bacterial cellulose/polyaniline (BC/PANi) blends present a great potential for several applications. The current study evaluates the impact of using different BC matrixes (drained, freeze-dried and regenerated) and different synthesis conditions (in situ and ex situ) to improve the inherent properties of BC, which were monitored through FTIR-ATR, EDX, XRD, SEM, AFM, swelling, contact angle measurement and IGC. The employment of in situ polymerization onto drained BC presented the most conductive membrane (1.4 × 10^-1 S/cm). The crystallinity, swelling capacity, surface energy and acid/base behavior of the BC membranes is substantially modified upon PANi incorporation, being dependent on the BC matrix used, being the freeze-dried BC blends the ones with highest crystallinity (up to 54%), swelling capacity (up to 414%) and surface energy (up to 75.0 mJ/m²). Hence, this work evidenced that the final properties of the BC/PANi blends are greatly influenced by both the BC matrixes and synthesis methods employed.

Keywords: Bacterial cellulose; Blend membrane; Inverse gas chromatography; Polyaniline.

MeSH terms

Aniline Compounds / chemistry*
Cellulose / analogs & derivatives*
Electric Conductivity*
Gluconacetobacter / chemistry*
Hydrophobic and Hydrophilic Interactions
Membranes, Artificial*

Substances

Aniline Compounds
Membranes, Artificial
polyaniline
Cellulose