Morphological and Wettability Properties of Thin Coating Films Produced from Technical Lignins.

ABSTRACT: Technical lignins are widely available as side streams from pulping and biorefining processes. The aromatic structure of such lignins could be exploited in coating formulations to provide antioxidant or UV-blocking functionalities to packaging films. In this study, six technical lignins sourced from different plant species by given isolation/modification methods were compared for their composition, molar mass, and functional groups. The lignins were then used to prepare thin spin-coated films from aqueous ammonia media. All the lignins formed ultrathin (<12 nm), smooth (roughness < 2 nm), and continuous films that fully covered the solid support. Most of the films contained nanometer-sized particles, while those from water-insoluble lignins also presented larger particulate features, which

SUBMITTER: Borrega M 

PROVIDER: S-EPMC7584368 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature