Open AccessMorphological structure of Gluconacetobacter xylinus cellulose and cellulose-based organic-inorganic composite materials
Author(s) -
R. Yu. Smyslov,
Ksenia V. Ezdakova,
G. P. Kopitsa,
А. К. Хрипунов,
Alexander N. Bugrov,
А. С. Ткаченко,
Borislav Angelov,
Vitaliy Pipich,
Noémi Székely,
А. Е. Baranchikov,
E. K. Latysheva,
Yu. O. Chetverikov,
V. M. Haramus
Publication year - 2017
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/848/1/012017
Subject(s) - materials science , cellulose , polymer , small angle x ray scattering , bacterial cellulose , composite material , nanoparticle , composite number , chemical engineering , scattering , nanotechnology , engineering , physics , optics
Scanning electron microscopy, ultra-small-angle neutron scattering (USANS), small-angle neutron and X-ray scattering (SANS and SAXS), as well as low-temperature nitrogen adsorption, were used in the studies of micro- and mesostructure of polymer matrix prepared from air-dry preliminarily disintegrated cellulose nano-gel film (synthesized by Gluconacetobacter xylinus) and the composites based on this bacterial cellulose. The composites included ZrO2 nanoparticles, Tb3+ in the form of low molecular weight salt and of metal-polymer complex with poly(vinylpyrrolydone)-poly(methacryloyl-o-aminobenzoic acid) copolymer. The combined analysis of the data obtained allowed revealing three levels of fractal organization in mesostructure of G. xylinus cellulose and its composites. It was shown that both the composition and an aggregation state of dopants have a significant impact on the structural characteristics of the organic-inorganic composites. The composites containing Tb3+ ions demonstrate efficient luminescence; its intensity is an order of magnitude higher in the case of the composites with the metal-polymer complex. It was found that there is the optimal content of ZrO2 nanoparticles in composites resulting in increased Tb3+ luminescence