Valorization of Spruce Bark to Environmentally Sustainable Packaging Materials.

ABSTRACT: In this study, cellulose-based films were developed by using microfibrillated cellulose (MFC) and lignin-containing microfibrillated cellulose (Lig-MFC) derived from sequentially extracted spruce bark. The films were coated with the hydrophilic extractives from the fractionation, resulting in additional MFC-coated and Lig-MFC-coated cellulose films. A combination of morphological (AFM), surface (water contact angle (WCA), roughness), optical (UV-vis), and mechanical properties was analyzed to assess structure-property relationships. Coated films exhibited significantly enhanced hydrophobicity and UV-shielding, with WCA increasing from 47° to 76° for MFC and from 66° to 71° for Lig-MFC. Notably, MFC-coated films displayed superior mechanical performance, with a tensile strength of 119 MPa a

SUBMITTER: Khalili H 

PROVIDER: S-EPMC12849044 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature