Mechanical and Gas Barrier Properties of Nylon 6/Clay Nanocomposite Blown Films

Authors

  • Anongnat Somwangthanaroj Chulalongkorn University
  • Mongkol Tantiviwattanawongsa Chulalongkorn University
  • Wiwut Tanthapanichakoon Tokyo Institute of Technology

DOI:

https://doi.org/10.4186/ej.2012.16.2.93

Keywords:

Nanocomposites, nylon 6, organoclay, mechanical properties, gas barrier properties, microstructure.

Abstract

Nylon 6/clay nanocomposite films were prepared by melt mixing nylon 6 with organoclay using a twin screw extruder attached to a blown film die. The type of surfactant used in the pretreatment of organoclay was expected to affect the degree of clay dispersion, which would in turn affect the degree of crystallinity, crystalline phase and bulk properties of the polymer composite. Two different surfactants used to treat the surface of montmorillonite clay were trimethyl tallow quaternary ammonium chloride (M3T, a single-chain surfactant) and dimethyl bis (hydrogenated-tallow) ammonium chloride (M2(HT)2, a double-chain surfactant). The addition of the resulting organoclay into nylon 6 was found to enhance the formation of γ-phase and increase the degree of crystallinity and crystallization temperature of the nylon 6. In fact nanocomposite films containing the single-chain surfactant showed a higher degree of clay dispersion in nylon 6 matrix, up to 148% higher stiffness and up to 100% lower oxygen permeability than those films containing the corresponding double-chain surfactant at the same inorganic loadings investigated. As expected, the nanocomposite films exhibited 58% higher stiffness in the machine direction than the transverse direction.

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Author Biographies

Anongnat Somwangthanaroj

Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

Mongkol Tantiviwattanawongsa

Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand

Wiwut Tanthapanichakoon

Department of Chemical Engineering, Graduate School of Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8552, Japan

Published

Vol 16 No 2, Mar 7, 2012

How to Cite

[1]
A. Somwangthanaroj, M. Tantiviwattanawongsa, and W. Tanthapanichakoon, “Mechanical and Gas Barrier Properties of Nylon 6/Clay Nanocomposite Blown Films”, Eng. J., vol. 16, no. 2, pp. 93-106, Mar. 2012.

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