4.7 Article

A novel glucomannan incorporated functionalized carbon nanotube films: Synthesis, characterization and antimicrobial activity

Journal

CARBOHYDRATE POLYMERS
Volume 245, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.116619

Keywords

Carboxymethyl konjac glucomannan; Gelatin; Gallic acid; Antibacterial film; Carbon nanotube

Funding

  1. National Natural Science Foundation of China [31772045]
  2. program on Fujian Agriculture and Forestry University of doctoral students going abroad [324-112110089]
  3. scientific research foundation graduate school of Fujian Agriculture and Forestry University [324-1122yb064]

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A novel nanocomposite film was developed by incorporating functionalized carbon nanotube (PCNT) and gallic acid (GA) into carboxymethyl konjac glucomannan (CKGM) and gelatin (GL) matrix. The influences of the PCNT content on the structural, morphological, mechanical, barrier, thermal and antimicrobial properties of CKGM/GL nanocomposite film were discussed. The structure of PCNT@CKGM/GL nanocomposite film was characterized by FT-IR, SEM, and AFM. The crystal structure and thermal ability of the film were generated by XRD and TGA-DTG. The analyses of FT-IR revealed that the amide linkage and strong hydrogen bonding were formed between CKGM, GL, and PCNT. Moreover, the characterization of mechanical properties, moisture barrier, and anti-microbial activities indicated the benefits of adding PCNT into CKGM/GL films. The results suggested that the PCNT@CKGM/GL films exhibited antimicrobial activity against Staphylococcus aureus and Escherichia coli. Therefore, such antimicrobial nanocomposite films have the potential of maintaining the quality and prolong the shelf life of food products.

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