Multi-properties of chitosan/montmorillonite composite films incorporated with virgin and modified montmorillonite

Authors

  • Siriwan Kittinaovarat Faculty of Science, Chulalongkorn University and Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University
  • Walaikorn Nitayaphat Faculty of Science, Chulalongkorn University
  • Nantana Jiratumnukul Faculty of Science, Chulalongkorn University and Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University
  • Sireerat Charuchinda Faculty of Science, Chulalongkorn University and Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University

Keywords:

Chitosan, Depolymerized chitosan, Montmorillonite, Composite film

Abstract

Chitosan (CTS) composite films were prepared by blending CTS with virgin or modified montmorillonite (vMMT or mMMT, respectively) and then spin coating. XRD analysis showed a good intercalation of CTS and the mMMT in the depolymerized 15 kDa CTS/mMMT composite. The tensile strength and rigidity of the CTS/vMMT and CTS/mMMT composite films increased, whilst the elongation at break decreased, with increasing levels of vMMT or, especially, mMMT from 0.1 to 2% (w/w). Both types of CTS/MMT composite films displayed a decreased oil and water absorption with increasing levels of incorporated vMMT or mMMT. Some aggregation of vMMT but not mMMT was observed by SEM analysis at a MMT content from 1% (w/w) upwards in the CTS/MMT composite films. The growth of spores and subsequent mycelia of the plant pathogenic fungi, Colletotrichum gloeosporioides, through the CTS, CTS/vMMT and CTS/mMMT composite films was inhibited.

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References

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Published

2022-08-13

How to Cite

[1]
S. Kittinaovarat, W. Nitayaphat, N. . Jiratumnukul, and S. . Charuchinda, “Multi-properties of chitosan/montmorillonite composite films incorporated with virgin and modified montmorillonite”, J Met Mater Miner, vol. 21, no. 2, Aug. 2022.

Issue

Vol. 21 No. 2 (2011)

Section

Original Research Articles

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