Fabrication of bacterial cellulose thin films self-assembled from sonochemically prepared nanofibrils and its characterization

Ultrason Sonochem. 2016 Jan:28:136-143. doi: 10.1016/j.ultsonch.2015.07.010. Epub 2015 Jul 14.

Abstract

Bacterial cellulose (BC) film formation could be a critical issue in nanotechnology applications such as biomedical or smart materials products. In this research, purified pretreated BC was subjected to high intensity ultrasound (HIUS) and was investigated for the development of BC films. The morphological, structural and thermal properties of the obtained films were studied by using FE-SEM, AFM, FT-IR, XRD, TGA and DSC characterizations. Results showed that the most favorable purification treatment was the 0.01 M NaOH at 70°C for 2h under continuous stirring. The most suitable ultrasound operating conditions were found to be, 1cm distance of ultrasonic probe from the bottom of the beaker, submerged in cold water bath cooling around 12 ± 2°C. The power (25 W/cm(2)), time (30 min), BC concentration (0.1%w/w), amplitude (20 μm) and frequency (20 kHz) were maintained constant.

Keywords: Microbial cellulose; Self-assembled thin films; Temperature; Ultrasonic irradiation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacteria / chemistry*
  • Cellulose / chemistry*
  • Hydrogen-Ion Concentration
  • Nanostructures / chemistry*
  • Nanotechnology / methods*
  • Ultrasonic Waves*

Substances

  • Cellulose