Ultrasound-assisted preparation of chitosan/nano-silica aerogel/tea polyphenol biodegradable films: Physical and functional properties

Zhijun Wu, Yang Li, Jing Tang, Derong Lin, Wen Qin, Douglas A. Loy, Qing Zhang, Hong Chen, Suqing Li

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

In this study, chitosan(CS), nano-silicon aerogels(nSA) and tea polyphenols(TP) were used as film-forming materials and processed with ultrasonication to form films using the tape-casting method. The effects of ultrasonication time, temperature and frequency on the properties of CS/nSA/TP film were explored via material property testing. The results of response surface showed that the maximum tensile strength of the film was 4.036 MPa at ultrasonication time(57.97 min), temperature(37.26 °C) and frequency(30 kHz). The maximum elongation at break of the film was 279.42 % at ultrasonication time(60.88 min), temperature(39.93 °C) and frequency(30 kHz). Due to cavitation and super-mixing effects, ultrasonication may make the surface of the film smoother and easier to degrade. After ultrasonication, TPs were protected by the 3D network structure composed of CS and nSA. Ultrasonication improved the antioxidant and antibacterial properties of the film. These results show that ultrasonication is an effective method to improve the properties of films.

Original languageEnglish (US)
Article number106052
JournalUltrasonics Sonochemistry
Volume87
DOIs
StatePublished - Jun 2022

Keywords

  • Antimicrobial property
  • Biodegradable film
  • Chitosan
  • Nano-silica aerogel
  • Ultrasound-assisted

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemical Engineering (miscellaneous)
  • Radiology Nuclear Medicine and imaging
  • Acoustics and Ultrasonics
  • Organic Chemistry
  • Inorganic Chemistry

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