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July 1, 2026Food Packaging and Shelf LifeOpen Access

Scale up coating process of PBAT with modified lignin for paper packaging: Barrier properties, and screening volatile/semi-volatile compounds

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Authors

FSFrancisco A.G. Soares SilvaJPJoel PereiraCGCarlos Granadeiro

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Overview

Randomized trial evaluates barrier properties of PBAT-lignin coatings in paper packaging, suggesting improved functionality.

Key Points

  • This study aims to develop and assess high-performance coating materials based on PBAT and modified lignin for food packaging applications.
  • Developed PBAT coatings with 1 wt% esterified lignin scaled up by extrusion coating.
  • Investigated the use of lignosulfonates as alternative compatibilizers at laboratory scale.
  • Conducted GC-MS screening to identify volatile and semi-volatile compounds in the coatings.
  • Coatings with 1 wt% E.Lignin reduced water and oxygen transmission rates by 65% compared to neat PBAT.
  • At pilot scale, achieved WVTR values of 250-150 g/m²·day and OTR values down to 200 cc/m²·day at higher grammages.
  • Identified additional volatiles, indicating a need for migration testing of coated papers before food contact.

Cite This Study

Silva et al. (2026) studied this question.

synapsesocial.com/papers/6a44af055cd2549c8bc441bfhttps://doi.org/10.1016/j.fpsl.2026.101799
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