Oxygen Barrier Properties of New Thermoplastic Natural Rubber Nanocomposites

H. Noor Azlina, Sahrim Ahmad, Rozaidi Rasid, A. R Shamsul Bahri, Y. Yamamoto, S. Kawahara

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Nanocomposites of linear low-density polyethylene (LLDPE)/natural rubber (NR)/liquid natural rubber (LNR) blend denoted as TPNR with montmorillonite-based organoclay (OMMT) were prepared using melt blending method. The melt blending of LLDPE/NR/LNR with a composition of 70:20:10 formed blends. For better dispersion of nanoclay in the TPNR blend, MA-PE was used as a coupling agent. The nanoclay dispersion was investigated by X-ray diffraction (XRD), and a novel method using permeability measurements data in a permeability model. The measured d-spacing data proved a good dispersion of nanoclay at low clay contents. The permeability model for flake-filled polymer was used to estimate the aspect ratio of nanoclay platelets in the blend nanocomposites. The oxygen barrier property of the TPNR blend improved about two-fold by adding only 2 wt% of organoclay. Differential scanning calorimetry showed an increase in cystallinity up to 20% suggesting an increase in spherulite growth, by the increased in melting temperature. The increase in the barrier property of the blend with the induction in crystallinity indicates the dominant role of organoclay platelets in barrier improvement. Scanning electron micrographs of tensile fracture surface of the nanocomposite, exhibited a very ductile surface indicating a good compatibility of LLDPE and NR and also, a possible contribution of nanoparticles to the deformation mechanism, such as extensive shear yielding in the polymer blend. The transmission electron micrograph, showed an intensive intercalation structure and exfoliation structure with the presence of MA-PE.

Original languageEnglish
Pages (from-to)1564-1569
Number of pages6
JournalPolymer - Plastics Technology and Engineering
Volume50
Issue number15
DOIs
Publication statusPublished - Nov 2011

Fingerprint

Rubber
Thermoplastics
Nanocomposites
Organoclay
Linear low density polyethylenes
Oxygen
Platelets
Bentonite
Filled polymers
Electrons
Coupling agents
Liquids
Polymer blends
Intercalation
Clay minerals
Melting point
Aspect ratio
Differential scanning calorimetry
Clay
Nanoparticles

Keywords

  • Crystallinity
  • Gas permeability
  • Nanocomposite
  • Organoclay
  • TPNR blend

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Science (miscellaneous)
  • Chemical Engineering(all)
  • Materials Chemistry

Cite this

Oxygen Barrier Properties of New Thermoplastic Natural Rubber Nanocomposites. / Azlina, H. Noor; Ahmad, Sahrim; Rasid, Rozaidi; Bahri, A. R Shamsul; Yamamoto, Y.; Kawahara, S.

In: Polymer - Plastics Technology and Engineering, Vol. 50, No. 15, 11.2011, p. 1564-1569.

Research output: Contribution to journalArticle

Azlina, H. Noor ; Ahmad, Sahrim ; Rasid, Rozaidi ; Bahri, A. R Shamsul ; Yamamoto, Y. ; Kawahara, S. / Oxygen Barrier Properties of New Thermoplastic Natural Rubber Nanocomposites. In: Polymer - Plastics Technology and Engineering. 2011 ; Vol. 50, No. 15. pp. 1564-1569.
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