GO-enabled bacterial cellulose membranes by multistep, in situ loading: effect of bacterial strain and loading pattern on nanocomposite properties

Tobiasz Gabryś (Author), Beata Fryczkowska (Author), Urška Jančič (Author), Janja Trček (Author), Selestina Gorgieva (Author)

Abstract

This paper presents the results of research on the preparation and properties of GO/BC nanocomposite from bacterial cellulose (BC) modified with graphene oxide (GO) using the in situ method. Two bacterial strains were used for the biosynthesis of the BC: Komagataeibacter intermedius LMG 18909 and Komagataeibacter sucrofermentans LMG 18788. A simple biosynthesis method was developed, where GO water dispersion was added to reinforced acetic acid-ethanol (RAE) medium at concentrations of 10 ppm, 25 ppm, and 50 ppm at 24 h and 48 h intervals. As a result, a GO/BC nanocomposite membrane was obtained, characterized by tensile strength greater by 150% as compared with the pure BC (̴ 50 MPa) and lower volume resistivity of ~4 ∙ 109 Ω × cm. Moreover, GO addition increases membrane thickness up to ~10% and affects higher mass production, especially with low GO concentration. All of this may indicate the possibility of using GO/BC membranes in fuel cell applications.

Keywords

bakterijska celuloza;grafen oksid;nanokompoziti;analiza konstrukcij;ne zaključna dela;bacterial cellulose;graphene oxide;nanocomposite;structural analysis;

Data

Language:	English
Year of publishing:	2023
Typology:	1.01 - Original Scientific Article
Organization:	UM FS - Faculty of Mechanical Engineering
Publisher:	MDPI
UDC:	577:677.46
COBISS:	140669187
ISSN:	1996-1944
Views:	96
Downloads:	4
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	Biokemija;Bakterije;
Type (COBISS):	Article
Pages:	19 str.
Volume:	ǂVol. ǂ16
Issue:	ǂiss. ǂ3, [article no.] 1296
Chronology:	2023
DOI:	10.3390/ma16031296
ID:	23133333