Preparation of polypropylene/octadecane composite films and their use in the packaging of cherry tomatoes

Dowan Kim, Mijin Lim, Jongchul Seo

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Polypropylene (PP)/octadecane (OD) composite films were prepared via twin-screw extrusion, and their chemical, morphological, thermal, and surface properties and oxygen and water vapor permeabilities were analyzed as functions of the OD content and temperature. OD was dispersed well in the PP matrix, and two phases (i.e., the PP and OD portions) were present in the PP/OD composite films. When the temperature was increased from 10 to 30 °C, both the oxygen transmittance rate and the water vapor transmittance rate of the PP/OD composite films increased sharply because of the influence of the OD content. These results were related to the temperature-dependent changes in the morphological structure, such as changes in the the tortuous paths and crystallinity in the composite films because of the addition of OD. In the storage test, the PP/OD (83:17) composite films continuously controlled the gas concentration of the headspace and protected against environmental factors; this reduced the enzymatic activity and led to higher quality cherry tomatoes compared to the case when the pure PP and MP33000 films were used.

Original languageEnglish
Article number44087
JournalJournal of Applied Polymer Science
Volume133
Issue number41
DOIs
Publication statusPublished - 2016 Nov 5

All Science Journal Classification (ASJC) codes

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

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