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Related Concept Videos

Cellulose and Pectic Polysaccharides01:15

Cellulose and Pectic Polysaccharides

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 Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth.  Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the...
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Green and Low-cost Production of Thermally Stable and Carboxylated Cellulose Nanocrystals and Nanofibrils Using Highly Recyclable Dicarboxylic Acids
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Regenerated cellulose I from LiCl·DMAc solution.

Yafan Wan1, Feng An2, Pucha Zhou2

  • 1National Engineering Laboratory for Carbon Fiber Technology, Institute of Coal Chemistry, Chinese Academy of Sciences, 27 Taoyuan South Road, Taiyuan 030001, P. R. China and School of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan 430081, P. R. China.

Chemical Communications (Cambridge, England)
|March 16, 2017
PubMed
Summary
This summary is machine-generated.

Researchers regenerated cellulose I from microcrystalline cellulose solutions. This process achieved high 84.7% crystallinity using thermal sol-gel transition and gelation.

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Biomass Conversion

Background:

  • Microcrystalline cellulose is a renewable biopolymer.
  • Regenerating cellulose allows for tailored material properties.
  • Existing methods often struggle with high crystallinity.

Purpose of the Study:

  • To develop a method for regenerating high-crystallinity cellulose I.
  • To investigate the sol-gel transition and gelation process for cellulose regeneration.
  • To characterize the structural properties of the regenerated cellulose.

Main Methods:

  • Dissolution of microcrystalline cellulose in DMAc·LiCl solvent.
  • Induction of sol-gel transition via thermal treatment.
  • Long-time gelation to promote cellulose I formation.
  • Crystallinity analysis using X-ray diffraction.

Main Results:

  • Successfully regenerated cellulose from microcrystalline cellulose/DMAc·LiCl solutions.
  • Achieved complete formation of cellulose I polymorph.
  • Obtained a high crystallinity of 84.7% for the regenerated cellulose.
  • Demonstrated the effectiveness of thermal sol-gel transition and gelation.

Conclusions:

  • The described method efficiently regenerates cellulose I with high crystallinity.
  • Thermal-induced sol-gel transition and prolonged gelation are key factors.
  • This approach offers a promising route for producing high-quality cellulose materials.