Physicochemical and mechanical properties of pectin-carbon nanotubes films produced by chemical bonding

Asgar Farahnaky, Soran Sharifi, Behnoosh Imani, Mohammad Mehdi Dorodmand, Mahsa Majzoobi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The aim of this study was to compare composites of pectin and carbon nanotubes (CNTs) prepared by chemical interaction (CI) or physical mixing (PM). CI-pectin-CNTs composite was produced by dispersing pectin and CNTs powder in ethanol, followed by refluxing at 60 °C. Biodegradable films of the pectin-CNTs composites were then produced and their mechanical, physicochemical and thermal properties were compared using rheological, tensile, oxygen permeation, integration, swelling and color tests. The CI-pectin-CNT films were more resistant to force, had greater stiffness and elongation at break and their water barrier properties were significantly greater than those of PM-pectin-CNTs. CI-pectin-CNTs films were lighter in color and showed greater integrity and swelling ratios. These confirmed substantial improvement of properties of pectin-CNTs films by chemical bonding as compared to physical mixing. Moreover, by chemical bonding the required level and hence the potential health risks of CNTs in biopolymer films and mixtures may be reduced.

Original languageEnglish
Pages (from-to)8-14
Number of pages7
JournalFood Packaging and Shelf Life
Volume16
Early online dateFeb 2018
DOIs
Publication statusPublished - Jun 2018

Fingerprint

chemical bonding
carbon nanotubes
Carbon Nanotubes
films (materials)
pectins
mechanical properties
Carbon nanotubes
physicochemical properties
Mechanical properties
chemical interactions
composite materials
Swelling
Composite materials
Color
pectin
biodegradability
Biopolymers
color
Health risks
biopolymers

Cite this

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title = "Physicochemical and mechanical properties of pectin-carbon nanotubes films produced by chemical bonding",
abstract = "The aim of this study was to compare composites of pectin and carbon nanotubes (CNTs) prepared by chemical interaction (CI) or physical mixing (PM). CI-pectin-CNTs composite was produced by dispersing pectin and CNTs powder in ethanol, followed by refluxing at 60 °C. Biodegradable films of the pectin-CNTs composites were then produced and their mechanical, physicochemical and thermal properties were compared using rheological, tensile, oxygen permeation, integration, swelling and color tests. The CI-pectin-CNT films were more resistant to force, had greater stiffness and elongation at break and their water barrier properties were significantly greater than those of PM-pectin-CNTs. CI-pectin-CNTs films were lighter in color and showed greater integrity and swelling ratios. These confirmed substantial improvement of properties of pectin-CNTs films by chemical bonding as compared to physical mixing. Moreover, by chemical bonding the required level and hence the potential health risks of CNTs in biopolymer films and mixtures may be reduced.",
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Physicochemical and mechanical properties of pectin-carbon nanotubes films produced by chemical bonding. / Farahnaky, Asgar; Sharifi, Soran; Imani, Behnoosh; Dorodmand, Mohammad Mehdi; Majzoobi, Mahsa.

In: Food Packaging and Shelf Life, Vol. 16, 06.2018, p. 8-14.

Research output: Contribution to journalArticle

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AB - The aim of this study was to compare composites of pectin and carbon nanotubes (CNTs) prepared by chemical interaction (CI) or physical mixing (PM). CI-pectin-CNTs composite was produced by dispersing pectin and CNTs powder in ethanol, followed by refluxing at 60 °C. Biodegradable films of the pectin-CNTs composites were then produced and their mechanical, physicochemical and thermal properties were compared using rheological, tensile, oxygen permeation, integration, swelling and color tests. The CI-pectin-CNT films were more resistant to force, had greater stiffness and elongation at break and their water barrier properties were significantly greater than those of PM-pectin-CNTs. CI-pectin-CNTs films were lighter in color and showed greater integrity and swelling ratios. These confirmed substantial improvement of properties of pectin-CNTs films by chemical bonding as compared to physical mixing. Moreover, by chemical bonding the required level and hence the potential health risks of CNTs in biopolymer films and mixtures may be reduced.

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