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Cytocompatible cellulose hydrogels containing trace lignin.

Kazuki Nakasone1, Takaomi Kobayashi1

  • 1Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan.

Materials Science & Engineering. C, Materials for Biological Applications
|April 30, 2016
PubMed
Summary
This summary is machine-generated.

This study prepared cellulose hydrogel films from sugarcane bagasse, finding that residual lignin enhances film strength and improves fibroblast compatibility. Lower lignin content increased water absorption but reduced mechanical properties.

Keywords:
CelluloseCytocompatibilityHydrogelLigninSugarcane bagasse

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Materials Engineering

Background:

  • Cellulose hydrogels are promising biomaterials.
  • Sugarcane bagasse is an abundant lignocellulosic biomass.
  • Lignin content can influence cellulose-based material properties.

Purpose of the Study:

  • To investigate the impact of varying lignin content on the properties and cytocompatibility of cellulose hydrogel films derived from sugarcane bagasse.
  • To optimize the purification process for cellulose extraction from bagasse for hydrogel film production.

Main Methods:

  • Cellulose was extracted from sugarcane bagasse using varying sodium hydroxide (NaOH) treatment times.
  • Cellulose was dissolved in lithium chloride/N,N-dimethylacetamide and converted into hydrogel films via phase inversion.
  • Hydrogel properties (water content, tensile strength, elongation, viscoelasticity) were analyzed.
  • Morphological observations were conducted using scanning probe microscopy.
  • Fibroblast cell culture was performed to assess cytocompatibility.

Main Results:

  • Lignin content in cellulose hydrogel films decreased from 1.62% to 0.68% with increased NaOH treatment time.
  • Water content increased from 1153% to 1525% as lignin content decreased.
  • Tensile strength decreased from 0.80 to 0.43 N/mm², and elongation decreased from 45.2% to 26.5% with lower lignin content.
  • Lignin influenced cellulose fiber aggregation within the hydrogel network.
  • Hydrogel films with higher lignin content (1.68%) exhibited superior fibroblast compatibility compared to those with lower lignin content and polystyrene cell culture dishes.

Conclusions:

  • Residual lignin significantly impacts the mechanical properties and water absorption of cellulose hydrogel films.
  • Lignin plays a crucial role in cellulose fiber aggregation, affecting hydrogel network structure.
  • Trace amounts of lignin enhance the cytocompatibility of cellulose hydrogel films for fibroblast applications.
  • Sugarcane bagasse is a viable source for producing functional cellulose hydrogel films with tunable properties.