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Types of Step-Growth Polymers: Polyesters01:20

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Exploring Novel Applications for Hydrogels Derived from Modified Celluloses.

Feiyang Wang1, Aldo Borjas1,2, Aldrin Bonto3

  • 1Clermont Auvergne INP, CNRS, Institut Pascal, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France.

Polymers
|February 24, 2024
PubMed
Summary
This summary is machine-generated.

Researchers developed novel, low-cost hydrogels from wheat straw and microcellulose using TEMPO oxidation. These sustainable biomass-derived polymers show excellent printability and injectability, paving the way for 3D printing applications.

Keywords:
TEMPO oxidationhydrogelmicrocelluloseprintabilityrheologicalwheat straw

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Area of Science:

  • Biomass valorization
  • Polymer chemistry
  • Materials science

Background:

  • Lignocellulosic biomass by-products are globally overproduced, presenting economic and ecological challenges.
  • Developing sustainable materials from these by-products is crucial for a circular economy.
  • Hydrogels offer versatile properties for various applications.

Purpose of the Study:

  • To fabricate novel hydrogels from wheat straw and microcellulose via TEMPO oxidation.
  • To evaluate the properties and potential applications of these biomass-derived hydrogels.
  • To demonstrate the transformation of lignocellulosic by-products into valuable polymers.

Main Methods:

  • TEMPO oxidation of wheat straw and microcellulose.
  • Fourier transform infrared (FTIR) spectroscopy for carboxyl group detection.
  • Neutralization titration with a conductivity meter.
  • Rheological analysis for viscosity measurements.
  • Transmittance analysis using a spectrophotometer.

Main Results:

  • Two novel hydrogels were successfully synthesized using TEMPO oxidation.
  • The wheat straw-derived hydrogel exhibited exceptional printability and injectability.
  • Achieved oxidation degrees of 56-69% for microcellulose and 56-63% for wheat straw.
  • Rapid cross-linking (400 seconds) of oxidized wheat straw with calcium chloride.
  • Viscosity exceeded 100,000 Pa·s for the wheat straw hydrogel.

Conclusions:

  • Low-cost, sustainable hydrogels were successfully created from modified wheat straw and microcellulose.
  • These hydrogels represent a viable valorization pathway for lignocellulosic biomass by-products.
  • The study confirms the potential of biomass-derived materials for 3D printing applications.