Diblock-copolymer-coated water- and oil-repellent cotton fabrics.

A diblock copolymer consisting of a sol-gel-forming block and a fluorinated block was used to coat cotton fabrics, yielding textiles that were highly oil- and water-repellent. The coating procedure was simple. At grafted polymer amounts of as low as 1.0 wt %, water, diodomethane, hexadecane, cooking oil, and pump oil all had contact angles surpassing 150° on the coated cotton fabrics and were readily rolled. The liquids were not drawn into the interfiber space by the coated fabrics. Rather, droplets of the nonvolatile liquids such as cooking oil retained their beaded shapes for months with minimal contact angle changes. When forced into water, the coated fabrics trapped an air or plastron layer and this plastron layer was stable for months. In addition, the coating had high stability against simulated washing, and the mechanical properties were essentially identical to those of uncoated cotton fabrics.

[1]  C. Jacob,et al.  Preparation and Comparison of Hydrophobic Cotton Fabric Obtained by Direct Fluorination and Admicellar Polymerization of Fluoromonomers , 2010 .

[2]  G de With,et al.  Biomimetic superhydrophobic and highly oleophobic cotton textiles. , 2007, Langmuir : the ACS journal of surfaces and colloids.

[3]  G. Gerbaud,et al.  Studies of interactions between silane coupling agents and cellulose fibers with liquid and solid‐state NMR , 2007, Magnetic resonance in chemistry : MRC.

[4]  Xuefeng Gao,et al.  Biophysics: Water-repellent legs of water striders , 2004, Nature.

[5]  Shih-Hsien Yang,et al.  Preparation of super-hydrophobic films using pulsed hexafluorobenzene plasma , 2009 .

[6]  Suobo Zhang,et al.  Fabrication of superhydrophobic cellulose-based materials through a solution-immersion process. , 2008, Langmuir : the ACS journal of surfaces and colloids.

[7]  K Efimenko,et al.  Creating long-lived superhydrophobic polymer surfaces through mechanically assembled monolayers. , 2000, Science.

[8]  Yang Yu,et al.  Laundering Durability of Superhydrophobic Cotton Fabric , 2010, Advanced materials.

[9]  K. Sugiyama,et al.  Precise synthesis and surface structures of architectural per- and semifluorinated polymers with well-defined structures , 2007 .

[10]  Jooyong Kim,et al.  Water repellent cotton fabrics prepared by PTFE RF sputtering , 2009 .

[11]  Boris Orel,et al.  Structural properties and antibacterial effects of hydrophobic and oleophobic sol-gel coatings for cotton fabrics. , 2009, Langmuir : the ACS journal of surfaces and colloids.

[12]  Guojun Liu,et al.  Chiral imprinting of diblock copolymer single-chain particles. , 2011, Langmuir : the ACS journal of surfaces and colloids.

[13]  Guojun Liu,et al.  Superamphiphobic Diblock Copolymer Coatings , 2011 .

[14]  W. Barthlott,et al.  Purity of the sacred lotus, or escape from contamination in biological surfaces , 1997, Planta.

[15]  F. Qing,et al.  Superhydrophobic cotton fabric coating based on a complex layer of silica nanoparticles and perfluorooctylated quaternary ammonium silane coupling agent , 2007 .

[16]  David Plackett,et al.  Surface Chemistry and Moisture Sorption Properties of Wood Coated with Multifunctional Alkoxysilanes by Sol- Gel Process , 2003 .

[17]  Lichao Gao,et al.  "Artificial lotus leaf" prepared using a 1945 patent and a commercial textile. , 2006, Langmuir : the ACS journal of surfaces and colloids.

[18]  Wei Chen,et al.  Ultrahydrophobic and Ultralyophobic Surfaces: Some Comments and Examples , 1999 .

[19]  Lei Jiang,et al.  Definition of Superhydrophobic States , 2007 .

[20]  L. Gerhardt,et al.  A Simple, One‐Step Approach to Durable and Robust Superhydrophobic Textiles , 2008 .

[21]  J. David Reid,et al.  Imparting Water-Repellency to Textiles by Chemical Methods , 1948 .