Polyethylene nanocomposite heat-sealants with a versatile peelable character

Evangelos Manias, Jinguo Zhang, Jin Young Huh, Kiattikhun Manokruang, Ponusa Songtipya, Maria Mar Jimenez-Gasco

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

A novel heat-sealing performance is achieved by polyethylene (PE) nanocomposites reinforced by ethylene vinyl acetate (EVA) and montmorillonite (MMT). Appropriate nanocomposite design leads to hermetic seals with a general peelable/easy-open character across the broadest possible sealing temperature range. Observations of the fracture seal surfaces by infrared spectroscopy and electron microscopy reveal that this behavior originates from a synergistic effect of the EVA copolymer and the montmorillonite clay nanofiller. Namely, the combination of EVA-copolymers and MMT nanofillers provides sufficiently favorable interactions for nanocomposite formation and mechanical robustness, but weak enough interfacial adhesion to promote a general cohesive failure of the sealant at the EVA/MMT interfaces.

Original languageEnglish (US)
Pages (from-to)17-23
Number of pages7
JournalMacromolecular Rapid Communications
Volume30
Issue number1
DOIs
StatePublished - Jan 2 2009

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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