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Obtaining lignin nanoparticles by sonication.

Iulian Andrei Gilca1, Valentin I Popa1, Claudia Crestini2

  • 1"Gheorghe Asachi" Technical University, Faculty of Chemical Engineering and Environmental Protection, Department of Natural and Synthetic Polymers, Blvd. Mangeron No 73, 700050 Iasi, Romania.

Ultrasonics Sonochemistry
|September 15, 2014
PubMed
Summary
This summary is machine-generated.

Researchers developed a physical method using ultrasonic irradiation to create lignin nanoparticles from wheat straw and Sarkanda grass. The study found that nanoparticle structure and composition were largely preserved, depending mainly on the original lignin source.

Keywords:
CharacterizationLigninsNanoparticlesUltrasound

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Lignin, a complex natural aromatic polymer, is primarily burned for energy, with its intricate structure hindering widespread use.
  • Developing methods to utilize lignin as a raw material is crucial for sustainable resource management.

Purpose of the Study:

  • To present a physical method for modifying lignin into nanoparticles using ultrasonic irradiation.
  • To characterize the synthesized lignin nanoparticles dimensionally and morphologically.
  • To determine structural and compositional changes in lignin after sonication.

Main Methods:

  • Physical modification of lignin using ultrasonic irradiation.
  • Dimensional and morphological characterization of synthesized nanoparticles.
  • Analysis of structural and compositional changes using FTIR-spectroscopy, GPC-chromatography, (31)P-NMR-spectroscopy, and HSQC.

Main Results:

  • Ultrasonic irradiation successfully produced lignin nanoparticles from wheat straw and Sarkanda grass.
  • The applied ultrasonic intensity did not significantly alter the composition and structure of the lignin nanoparticles.
  • Observed changes in lignin nanoparticles were dependent on the original lignin source material.

Conclusions:

  • Ultrasonic irradiation is a viable physical method for producing lignin nanoparticles.
  • Lignin nanoparticles retain their core structural and compositional integrity post-sonication, with source material being a key factor.
  • This research opens avenues for utilizing modified lignin in various applications.