Premium
Synthesis, physical properties, and characterization of starch‐based blend films by adding nano‐sized TiO 2 /poly(methyl metacrylate‐ co ‐acrylamide)
Author(s) -
Yun YeonHum,
Hwang KyungJun,
Wee YoungJung,
Yoon SoonDo
Publication year - 2010
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.33408
Subject(s) - materials science , crystallinity , starch , chemical engineering , polyvinyl alcohol , fourier transform infrared spectroscopy , photodegradation , scanning electron microscope , nanoparticle , photocatalysis , polymer chemistry , nuclear chemistry , composite material , organic chemistry , chemistry , catalysis , nanotechnology , engineering
The purpose of this study was to improve the physical properties and to expand the application range of starch‐based blend films added nano‐sized TiO 2 /poly(methyl methacrylate‐ co ‐acrylamide) (PMMA‐ co ‐AM). Starch‐based blend films were prepared by using corn starch, polyvinyl alcohol (PVA), nano‐sized PMMA‐ co ‐AM, nano‐sized TiO 2 /PMMA‐ co ‐AM particles, and additives, i.e., glycerol (GL) and citric acid (CA). Nano‐sized PMMA‐ co ‐AM was synthesized by emulsion polymerization and TiO 2 nanoparticles were also prepared by using sol–gel method. Nano‐sized TiO 2 /PMMA‐ co ‐AM particles were synthesized by wet milling for 48 h. The morphology and crystallinity of TiO 2 , nano‐sized PMMA‐ co ‐AM and TiO 2 /PMMA‐ co ‐AM particles were investigated by using the scanning electron microscope (SEM) and X‐ray diffractometer (XRD). In addition, the functional groups of the TiO 2 /PMMA‐ co ‐AM particles were characterized by IR spectrophotometry (FTIR). The physical properties such as tensile strength (TS), elongation at break (%E), degree of swelling (DS), and solubility (S) of starch‐based films were evaluated. It was found that the adding of nano‐sized particles can greatly improve the physical properties of the prepared films. The photocatalytic degradability of starch/PVA/nano‐sized TiO 2 /PMMA‐ co ‐AM composite films was evaluated using methylene blue (MB) and acetaldehyde (ATA) as photodegradation target under UV and visible light. The degree of decomposition ( C / C 0 ) of MB and ATA for the films containing TiO 2 and CA was 0.506 and 0.088 under UV light irradiation and 0.586 (MB) and 0.631 (ATA) under visible light irradiation, respectively. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011