A Green High Barrier Solution for Paperboard Packaging based on Potato Fruit Juice, Poly(lactic acid), and Poly(butylene adipate terephthalate)

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Abstract

The potential of using potato fruit juice (PFJ), a byproduct from the potato starch industry, was investigated as a barrier paper-coating material. The paperboard was initially hand-coated with PFJ (with and without glycerol as plasticizer) and then extrusion-coated with poly(lactic acid) (PLA) or a blend of PLA and poly(butylene adipate terephthalate) (PBAT). The multilayer coated paperboard was homogeneous in appearance with a glossy finish. The coated paperboard showed, at the most, a ca. 95% reduction in specific water vapor transmission rate compared to the uncoated paperboard. In the presence of the PFJ layer, the extrusion-coated paperboard experienced, at the most, a 98% reduction in oxygen permeability. The grease resistance of the paperboard was also improved significantly with this multilayer coating. PLA- and PFJ-coated samples showed better barrier properties, whereas PFJ with PLA/PBAT layers exhibited better adhesion and heat-sealing properties. The peel strength of the coated samples was moderately good for paper converting applications. The developed coated paperboard also exhibited good creasing properties which is yet again an advantage for packaging applications. The presented barrier properties make the developed multilayer coatings on paperboards a sustainable competitive alternative to several of today's coatings.

Original languageEnglish
Pages (from-to)4179-4188
Number of pages10
JournalACS Applied Polymer Materials
Volume4
Issue number6
DOIs
Publication statusPublished - 10 Jun 2022
Publication typeA1 Journal article-refereed

Keywords

  • barrier coating
  • barrier properties
  • bio-based coating
  • heat sealing
  • paper coating
  • peel strength
  • poly(butylene adipate terephthalate)
  • poly(lactic acid)
  • potato fruit juice

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Polymers and Plastics
  • Organic Chemistry

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