We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Biodegradable, Flexible and Ultraviolet Blocking Nanocellulose Composite Film Incorporated with Lignin Nanoparticles
Summary
Composite films combining cellulose nanofibrils with lignin nanoparticles from two isolation methods were fabricated, producing biodegradable, flexible materials with strong UV-blocking performance suitable as plastic film replacements. The lignin-CNF composites achieved UV absorbance through the natural chromophore properties of lignin without requiring synthetic UV additives.
The exploration of functional films using sustainable cellulose-based materials to replace plastics has been of much interest. In this work, two kinds of lignin nanoparticles (LNPs) were mixed with cellulose nanofibrils (CNFs) for the fabrication of composite films with biodegradable, flexible and ultraviolet blocking performances. LNPs isolated from p-toluenesulfonic acid hydrolysis was easily recondensed and deposited on the surface of composite film, resulting in a more uneven surface; however, the composite film consisting of CNFs and LNPs isolated from maleic acid hydrolysis exhibited a homogeneous surface. Compared to pure CNF film, the composite CNF/LNP films exhibited higher physical properties (tensile strength of 164 MPa and Young's modulus of 8.0 GPa), a higher maximal weight loss temperature of 310 °C, and a perfect UVB blocking performance of 95.2%. Meanwhile, the composite film had a lower environmental impact as it could be rapidly biodegraded in soil and manmade seawater. Overall, our results open new avenues for the utilization of lignin nanoparticles in biopolymer composites to produce functional and biodegradable film as a promising alternative to petrochemical plastics.
Sign in to start a discussion.
More Papers Like This
Green and Scalable Preparation of Colloidal Suspension of Lignin Nanoparticles and Its Application in Eco-friendly Sunscreen Formulations
Researchers developed a scalable, solvent-free method to produce lignin nanoparticles and demonstrated their use as a natural UV-absorbing ingredient in eco-friendly sunscreen formulations, offering a biodegradable alternative to synthetic UV filters.
Conversion of Cellulose and Lignin Residues into Transparent UV-Blocking Composite Films
Researchers developed UV-blocking composite films by chemically converting cellulose and lignin residues from three biomass sources (aspen wood, poplar wood, and corn stover) via a dissolution-regeneration process, assessing their UV-blocking performance as a sustainable alternative to petrochemical plastic films. Results showed that all three lignin residue types enhanced the UV-blocking properties of the composite films, supporting their potential in functional biorefinery-integrated packaging.
Hydrogen-bonded lignin-acrylic copolymer/WPU composites with Integrated UV shielding, antioxidancy and degradability
Researchers synthesized a lignin-acrylic copolymer from rice straw waste and blended it with waterborne polyurethane to create a composite film with 43% higher tensile strength, near-total UV blocking, and dramatically improved antioxidant capacity, offering a biodegradable, microplastic-reducing alternative to conventional plastic films.
Nano-Structured Lignin as Green Antioxidant and UV Shielding Ingredient for Sunscreen Applications
This review covered the use of lignin nanoparticles as green antioxidants and UV-shielding agents in sunscreen and antiaging cosmetics, highlighting the enhanced properties of nanoscale lignin derived from pulp and paper industry waste.
3D-Printed Polylactic Acid/Lignin Films with Great Mechanical Properties and Tunable Functionalities towards Superior UV-Shielding, Haze, and Antioxidant Properties
Researchers incorporated lignin into polylactic acid (PLA) to create 3D-printable composite filaments, finding that lignin addition improved mechanical properties and enabled tunable functionalities in the resulting films, expanding options for sustainable additive manufacturing materials.