Properties of low methoxyl pectin‐carboxymethyl cellulose based on montmorillonite nanocomposite films |
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| Authors: | Wen‐Xi Yu Zhi‐Wei Wang Chang‐Ying Hu Lei Wang |
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| Affiliation: | 1. Department of Packaging Engineering, Jiangnan University, , Wuxi, 214122 China;2. Key Laboratory of Product Packaging and Logistics of Guangdong Higher Education Institutes, Jinan University, , Zhuhai, 519070 China;3. Packaging Engineering Institute, Jinan University, , Zhuhai, 519070 China;4. Department of Food Science and Engineering, Jinan University, , Guangzhou, 510632 China |
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| Abstract: | 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 ± 2.51 MPa 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 ΔE*‐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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| Keywords: | Carboxymethyl cellulose food packaging low methoxyl pectin montmorillonite nanocomposite films |
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