Esterified lignin coating as water vapor and oxygen barrier for fiber-based packaging

Eva-Lena Hult Mori (Corresponding Author), K. Koivu, J. Asikkala, Jarmo Ropponen, P. Wrigstedt, J. Sipilä, Kristiina Poppius-Levlin

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13 Citations (Scopus)

Abstract

Lignin, esterified with palmitic and lauric acid chloride, has been studied for the application as coating on fiber-based packaging material. The aim was to improve the barrier properties against water vapor and oxygen of paperboard. The esterification was followed by Fourier transform infrared spectroscopy, 31P nuclear magnetic resonance spectroscopy, and gel permeation chromatography measurements. The lignin esters were applied on paperboard and formed a continuous film. The moisture barrier property of the coated paperboards was characterized by the water vapor transmission rate (WVTR). A significant decrease in WVTR was observed, for example, 40 g m-2 (for 24 h) for a paperboard coated with 10.4 g m-2 hardwood kraft lignin palmitate. The contact angle of water on the lignin ester coatings was high and stable. For all paperboard samples coated with lignin esters, a significant decrease in oxygen transmission rate was observed. Accordingly, lignin palmitate and laurate have a high potential as a barrier materials in packaging applications.
Original languageEnglish
Pages (from-to)899-905
Number of pages6
JournalHolzforschung
Volume67
Issue number8
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

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Keywords

  • coating
  • gas barrier properties
  • kraft lignin
  • lignin laurate
  • lignin palmitate
  • lignin utilization
  • moisture barrier
  • oxygen transmission rate (OTR)
  • packaging material
  • Water vapor transmission rate (WVTR)

Cite this

Hult Mori, E-L., Koivu, K., Asikkala, J., Ropponen, J., Wrigstedt, P., Sipilä, J., & Poppius-Levlin, K. (2013). Esterified lignin coating as water vapor and oxygen barrier for fiber-based packaging. Holzforschung, 67(8), 899-905. https://doi.org/10.1515/hf-2012-0214