Premium
Effects of nano‐tio 2 on the performance of high‐amylose starch based antibacterial films
Author(s) -
Liu Chao,
Xiong Hanguo,
Chen Xing,
Lin Shun,
Tu Yanhua
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.42339
Subject(s) - materials science , fourier transform infrared spectroscopy , differential scanning calorimetry , starch , nano , scanning electron microscope , chemical engineering , amylose , miscibility , ultimate tensile strength , titanium dioxide , polymer chemistry , nuclear chemistry , composite material , polymer , organic chemistry , chemistry , physics , engineering , thermodynamics
The purpose of this article is to investigate the effects of nano‐tianium dioxide (nano‐TiO 2 ) on the high‐amylose starch/polyvingl alcohol (PVA) blend films prepared by a solution casting method. The results show that at the concentration of 0.6% of nano‐TiO 2 , the film demonstrated the best tensile strength at 9.53 MPa, and the elongation at break was noted as 49.50%. The optical transmittance of the film was decreased and the water resistance was improved with further increase of the concentration of nano‐TiO 2 . Using the techniques of Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and field‐emission scanning electron microscopy (SEM), the molecular and the crystal structures of the films were characterized. The results indicate that the miscibility and compatibility between high‐amylose starch and PVA were increased with the addition of nano‐TiO 2 into the films due to the formation of hydrogen and COTi bonds. The antimicrobial activities of the blend films were also explored. The results show that there were inhibitory zones around the circular film disc, which is attributable to the addition of nano‐TiO 2 . © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42339.