Enhancing the mechanical and barrier properties of chitosan/graphene oxide composite films using trisodium citrate and sodium tripolyphosphate crosslinkers

This study investigated the effect of ionic crosslinking on the mechanical, barrier, and optical properties of chitosan (CS) and CS/graphene oxide (CSGO) composite films using trisodium citrate (CIT) and sodium tripolyphosphate (TPP) solutions of different concentrations (0.5, 1.0. 2.0, and 3.0% w/v...

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Published in:Journal of applied polymer science 2021-07, Vol.138 (26), p.n/a
Main Authors: Han Lyn, Foong, Tan, Chin Ping, Zawawi, Ruzniza Mohd, Nur Hanani, Zainal Abedin
Format: Article
Language:English
Subjects:
biodegradable
Chitosan
Crosslinking
differential scanning calorimetry (DSC)
Elongation
Food packaging
Graphene
Light transmittance
Materials science
mechanical properties
Optical properties
Permeability
Polymers
Sodium citrate
Sodium triphosphate
spectroscopy
Tensile strength
Water vapor
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cited_by cdi_FETCH-LOGICAL-c3348-b85ab44303fe1f8060eb300b08abc97585d6fe23e0d9ee508926130bca44039b3
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creator Han Lyn, Foong
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description This study investigated the effect of ionic crosslinking on the mechanical, barrier, and optical properties of chitosan (CS) and CS/graphene oxide (CSGO) composite films using trisodium citrate (CIT) and sodium tripolyphosphate (TPP) solutions of different concentrations (0.5, 1.0. 2.0, and 3.0% w/v). Successful crosslinking was confirmed by Fourier‐transform infrared spectroscopy. The hydrophilicity and light transmittance decreased significantly (p 
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Successful crosslinking was confirmed by Fourier‐transform infrared spectroscopy. The hydrophilicity and light transmittance decreased significantly (p &lt; 0.05) with the increase in concentration of both crosslinking agents. The CS films crosslinked with 3.0% w/v TPP exhibited significant (p &lt; 0.05) improvements in barrier properties, achieving a 51% decrease of water vapor permeability and 59% decrease in oxygen permeability, in comparison to neat CS film. In addition, TPP‐crosslinked CSGO films experienced an 82% and 42% improvement in tensile strength and elongation at break, respectively. 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Successful crosslinking was confirmed by Fourier‐transform infrared spectroscopy. The hydrophilicity and light transmittance decreased significantly (p &lt; 0.05) with the increase in concentration of both crosslinking agents. The CS films crosslinked with 3.0% w/v TPP exhibited significant (p &lt; 0.05) improvements in barrier properties, achieving a 51% decrease of water vapor permeability and 59% decrease in oxygen permeability, in comparison to neat CS film. In addition, TPP‐crosslinked CSGO films experienced an 82% and 42% improvement in tensile strength and elongation at break, respectively. 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source Wiley-Blackwell Read & Publish Collection
subjects biodegradable
Chitosan
Crosslinking
differential scanning calorimetry (DSC)
Elongation
Food packaging
Graphene
Light transmittance
Materials science
mechanical properties
Optical properties
Permeability
Polymers
Sodium citrate
Sodium triphosphate
spectroscopy
Tensile strength
Water vapor
title Enhancing the mechanical and barrier properties of chitosan/graphene oxide composite films using trisodium citrate and sodium tripolyphosphate crosslinkers
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