Effect of shear rate on structural, mechanical, and barrier properties of chitosan/montmorillonite nanocomposite film

Seung In Hong, Jin Hwan Lee, Ho Jae Bae, Song Yi Koo, Hyun Soo Lee, Jae Hoon Choi, Dong Hyun Kim, Seok Hoon Park, Hyun Jin Park

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

The dispersion of MMT-Na+ (montmorillonite) layers in a chitosan polymer matrix, using the homogenization, was performed. The effect of shear rate was characterized on the mechanical, barrier, and structural properties of nanocomposites. Elongation at break (EAB) was unaffected by shear rate, which decreased after homogenization, increased above 13,000 rpm, however, tensile strength (TS) dramatically increased up to 59 MPa at 16,000 rpm. Water vapor permeability (WVP) and oxygen permeability (OP) of the homogenized nanocomposite decreased more than that of untreated nanocomposite and OP was not significantly changed above 16,000 rpm of shear rate. XRD result and TEM images indicated that three types of tactoids, exfoliation, and intercalation were generated and the largest distance of 18.87 Å between MMT-Na+ layers was produced at 16,000 rpm. The results indicate that homogenization was a beneficial method for effectively dispersing MMT-Na+ layers in a chitosan polymer matrix and that a shear rate of 16,000 rpm was the effective condition.

Original languageEnglish
Pages (from-to)2742-2749
Number of pages8
JournalJournal of Applied Polymer Science
Volume119
Issue number5
DOIs
Publication statusPublished - 2011 Mar 5

Fingerprint

Bentonite
Nanocomposite films
Chitosan
Clay minerals
Shear deformation
Nanocomposites
Polymer matrix
Oxygen
Steam
Intercalation
Water vapor
Structural properties
Elongation
Tensile strength
Transmission electron microscopy
2-methylcyclopentadienyl manganese tricarbonyl

Keywords

  • barrier
  • clay
  • mechanical properties
  • morphology
  • nanocomposites

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Surfaces, Coatings and Films
  • Chemistry(all)

Cite this

Effect of shear rate on structural, mechanical, and barrier properties of chitosan/montmorillonite nanocomposite film. / Hong, Seung In; Lee, Jin Hwan; Bae, Ho Jae; Koo, Song Yi; Lee, Hyun Soo; Choi, Jae Hoon; Kim, Dong Hyun; Park, Seok Hoon; Park, Hyun Jin.

In: Journal of Applied Polymer Science, Vol. 119, No. 5, 05.03.2011, p. 2742-2749.

Research output: Contribution to journalArticle

Hong, Seung In ; Lee, Jin Hwan ; Bae, Ho Jae ; Koo, Song Yi ; Lee, Hyun Soo ; Choi, Jae Hoon ; Kim, Dong Hyun ; Park, Seok Hoon ; Park, Hyun Jin. / Effect of shear rate on structural, mechanical, and barrier properties of chitosan/montmorillonite nanocomposite film. In: Journal of Applied Polymer Science. 2011 ; Vol. 119, No. 5. pp. 2742-2749.
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