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Deposition of Porous Sorbents on Fabric Supports
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Published on: June 12, 2018

Superoleophobic cotton textiles.

Boxun Leng1, Zhengzhong Shao, Gijsbertus de With

  • 1Key Laboratory of Molecular Engineering of Polymers of Ministry of Education, Department of Macromolecular Science, Fudan University, Shanghai 200433, China.

Langmuir : the ACS Journal of Surfaces and Colloids
|February 10, 2009
PubMed
Summary
This summary is machine-generated.

Researchers developed superoleophobic cotton textiles that repel both water and oil. This advancement enhances the self-cleaning capabilities of fabrics, overcoming limitations of previous superhydrophobic materials.

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Area of Science:

  • Materials Science
  • Textile Engineering
  • Surface Chemistry

Background:

  • Common cotton textiles are naturally hydrophilic and oleophilic.
  • Existing superhydrophobic cotton textiles often lack sufficient oil repellency, hindering self-cleaning properties.
  • Poor oil repellency compromises the overall effectiveness of self-cleaning fabrics.

Purpose of the Study:

  • To develop superoleophobic cotton textiles with enhanced oil repellency.
  • To improve the self-cleaning properties of cotton fabrics by addressing oil repellency limitations.
  • To create a multilength-scale surface structure on cotton for superior liquid repellency.

Main Methods:

  • Fabricating a multilength-scale roughness on cotton fibers using woven structure and silica particles (micro and nano).
  • Covalently bonding silica microparticles and nanoparticles to cotton fibers.
  • Surface modification with perfluoroalkyl groups to achieve superoleophobicity.

Main Results:

  • Achieved superoleophobic cotton textiles with a high hexadecane contact angle (153°) and low roll-off angle (9°).
  • Demonstrated that a multilength-scale structure, including a nanoparticle layer, is crucial for superoleophobicity.
  • Confirmed the essential role of the nanoparticle layer in achieving low roll-off angles for hexadecane.

Conclusions:

  • Superoleophobic cotton textiles were successfully prepared using a multilength-scale structure and perfluoroalkyl modification.
  • The integration of silica microparticles and nanoparticles, particularly the nanoparticle layer, is vital for achieving excellent oil repellency.
  • These findings offer a pathway to more effective self-cleaning textiles with robust oil and water repellency.