Journal
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
Volume 49, Issue 12, Pages 2592-2601Publisher
WILEY
DOI: 10.1111/ijfs.12590
Keywords
Carboxymethyl cellulose; food packaging; low methoxyl pectin; montmorillonite; nanocomposite films
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Funding
- National Natural Science Foundation of China [21277061, 21077045, 21277085]
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In this study, the low methoxyl pectin-carboxymethyl cellulose-based montmorillonite (LMP-CMC-MMT, LCM) nanocomposite films with nine ratios of LMP:CMC (from 10:0 to 0:10) and different MMT contents (1-8 wt%) were prepared. The mechanical properties, colour, opacity and water vapour permeability (WVP) of composite films were investigated. The maximum of tensile strength (TS) of composite films was 39.85 +/- 2.51MPa at LMP:CMC ratio of 4:6 and 4 wt% MMT (LCM47), which indicated the formation of hydrogen bonds between MMT and LMP-CMC. The reduction of WVP of the LCM47 composite film was 333% of that of the CMC film due to the tortuous path caused by MMT incorporation. LCM composite films had the higher b*- and E*-values and lower L*-values in comparison with LMP-CMC (LC) composite films. The LCM composite films showed a decrease in transparency as MMT content increased.
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