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Self-Assembling Behavior of Cellulose Nanoparticles during Freeze-Drying: Effect of Suspension Concentration, Particle Size, Crystal Structure, and Surface Charge

Han, Jingquan, Zhou, Chengjun, Wu, Yiqiang, Liu, Fangyang, Wu, Qinglin·2013·Biomacromolecules

Abstract

Cellulose nanocrystals and cellulose nanofibers with I and II crystalline allomorphs (designated as CNC I, CNC II, CNF I, and CNF II) were isolated from bleached wood fibers by alkaline pretreatment and acid hydrolysis. The effects of concentration, particle size, surface charge, and crystal structure on the lyophilization-induced self-assembly of cellulose particles in aqueous suspensions were studied. Within the concentration range of 0.5 to 1.0 wt %, cellulose particles self-organized into lamellar structured foam composed of aligned membrane layers with widths between 0.5 and 3 μm. At 0.05 wt %, CNC I, CNF I, CNC II, and CNF II self-assembled into oriented ultrafine fibers with mean diameters of 0.57, 1.02, 1.50, and 1.00 μm, respectively. The size of self-assembled fibers became larger when more hydroxyl groups and fewer sulfates (weaker electrostatic repulsion) were on cellulose surfaces. Possible formation mechanism was inferred from ice growth and interaction between cellulose nanoparticles in liquid-crystalline suspensions.

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Metadata

Authors
Han, J., Zhou, C., Wu, Y., Liu, F., & Wu, Q.
Venue
Biomacromolecules
Published
2013-04-12
Volume
14
Issue
5
Pages
1529-1540
ISSN
  • 1525-7797 (ISSN-L)
  • 1526-4602
OpenAlex
W2321616119
Cited by
490
References
6
FWCI
10.90
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Self-Assembling Behavior of Cellulose Nanoparticles during Freeze-Drying: Effect of Suspension Concentration, Particle Size, Crystal Structure, and Surface Charge. https://app.cochat.ai/papers/10.1021/bm4001734
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Han, J., Zhou, C., Wu, Y., Liu, F., & Wu, Q. (2013). Self-Assembling Behavior of Cellulose Nanoparticles during Freeze-Drying: Effect of Suspension Concentration, Particle Size, Crystal Structure, and Surface Charge. Biomacromolecules. https://doi.org/10.1021/bm4001734

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