A simple method for the preparation of superhydrophobic PVDF–HMFS hybrid composite coatings

Basu, Bharathi Bai J.; Paranthaman, Ashok Kumar

doi:10.1016/j.apsusc.2008.11.065

Cited by 85 publications

(50 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, several studies possible approach towards such a goal the work by Basu et al [ 29 ] In the study, a spray-coated superhydrophobic fi lm was created from a composite of hydrophobically modifi ed silica particles in a fl uorinated polymer matrix. The fi lm was superhydrophobic after spray coating without further treatments.…”

Section: Resultsmentioning

confidence: 99%

“…Other procedures include ball-on-disk tests, [ 23 ] high-speed current scouring or water jet test [ 23 , 28 ] and rubbing with a cotton swab. [ 29 ] Likewise, no single measure has been used for characterizing the effect of wear. Different criteria used in the literature include the change in contact angle hysteresis, [ 22 , 25 ] water shedding angle, [ 10 ] roll-off behavior, [ 26 , 29 ] coeffi cient of friction [ 23 ] or static contact angle.…”

Section: Methods Of Testing and Characterizing Wearmentioning

confidence: 99%

See 1 more Smart Citation

Mechanically Durable Superhydrophobic Surfaces

et al. 2010

View full text Add to dashboard Cite

Development of durable non-wetting surfaces is hindered by the fragility of the microscopic roughness features that are necessary for superhydrophobicity. Mechanical wear on superhydrophobic surfaces usually shows as increased sticking of water, leading to loss of non-wettability. Increased wear resistance has been demonstrated by exploiting hierarchical roughness where nanoscale roughness is protected to some degree by large scale features, and avoiding the use of hydrophilic bulk materials is shown to help prevent the formation of hydrophilic defects as a result of wear. Additionally, self-healing hydrophobic layers and roughness patterns have been suggested and demonstrated. Nevertheless, mechanical contact not only causes damage to roughness patterns but also surface contamination, which shortens the lifetime of superhydrophobic surfaces in spite of the self-cleaning effect. The use of photocatalytic effect and reduced electric resistance have been suggested to prevent the accumulation of surface contaminants. Resistance to organic contaminants is more challenging, however, oleophobic surface patterns which are non-wetting to organic liquids have been demonstrated. While the fragility of superhydrophobic surfaces currently limits their applicability, development of mechanically durable surfaces will enable a wide range of new applications in the future.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methods Of Testing and Characterizing Wearmentioning

confidence: 99%

Mechanically Durable Superhydrophobic Surfaces

et al. 2010

View full text Add to dashboard Cite

show abstract

“…12 Due to the chemical stability, PVDF membrane is distinguished by its outstanding properties: excellent resistance to chemicals, heat, fungal attack and radiation. [13][14][15] Therefore, it is difficult to give PVDF membrane superhydrophbic property. The superhydrophobic PVDF membrane has been prepared by the method of NaOH enhancing chemical bath deposition in our previous work.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of self‐cleaning poly(vinylidene fluoride) membrane with micro/nanoscaled two‐tier roughness

Zheng

Huo

et al. 2011

J of Applied Polymer Sci

View full text Add to dashboard Cite

Based on the ''lotus effect'' principle, smooth microreliefs of polyvinylidene fluoride (PVDF) membrane were prepared via thermally induced phase separation process. Hydroxyl groups were introduced into PVDF membrane by pretreatment with KOH/alcohol solution. Subsequently, these hydroxyl groups grafted with (CH 3 ) 2 SiCl 2 /CH 3 SiCl 3 to form nano-clusters, which were decorated on the microreliefs of PVDF membrane. Scanning Electronic Microscopy (SEM) and Atomic Force Microscope (AFM) analysis showed the micro-and nano-scale structures, similar to lotus leaf, were successfully fabricated on the PVDF membrane surface. The water contact angle and sliding angle on the fabricated lotus-leaf-like PVDF membrane surface were 154 and 4 , respectively. Self-cleaning test indicated that the lotus-leaf-like surface of PVDF membrane has excellent superhydrophobic and self-cleaning properties.

show abstract

“…SH properties of polymerbased nanocomposite coatings prepared by dispersing nanoCaCO 3 in PVDF have been reported [19]. Our previous studies have shown that polyvinylidene difluoride (PVDF) or sol-gel can be used as a binder matrix to prepare composite coatings with SH property [20,21]. Even though PTFE has lower surface energy than PVDF, it is difficult to prepare coatings with it due to its low adhesion to surfaces and limited solubility in solvents.…”

Section: Introductionmentioning

confidence: 99%

“…Fluorinated polymers are of special interest in the creation of superhydrophobic surfaces due to their extremely low surface energies [7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Among the fluorocarbons, polytetrafluoroethylene (PTFE) is widely used as coatings for antiadhesion agents and chemical insulators because of its very low surface energy.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Superhydrophobic Nanocomposite Coatings Using Polytetrafluoroethylene and Silica Nanoparticles

Basu

Kumar

2011

ISRN Nanotechnology

View full text Add to dashboard Cite

Superhydrophobic nanocomposite coatings were fabricated by incorporating hydrophobically modified silica (HMS) nanoparticles in polytetrafluoroethylene (PTFE) emulsion. Hydrophobicity of the coating was dependent on the concentration of HMS. Coatings containing optimum amounts of PTFE and HMS exhibited superhydrophobic property with high water contact angle (WCA) of 165• and low sliding angle <2• . Scanning electron microscopic (SEM) studies have shown a binary surface topography composed of microbumps and nanoscale granules. The synergistic effect of the micro-nano-binary structure and low surface energy of PTFE was responsible for the superhydrophobicity of the coating. The method is simple and cost-effective and can be used for preparing self-cleaning superhydrophobic coatings on large areas of different kinds of substrates like glass, metal, and composites.

show abstract

A simple method for the preparation of superhydrophobic PVDF–HMFS hybrid composite coatings

Cited by 85 publications

References 25 publications

Mechanically Durable Superhydrophobic Surfaces

Mechanically Durable Superhydrophobic Surfaces

Fabrication of self‐cleaning poly(vinylidene fluoride) membrane with micro/nanoscaled two‐tier roughness

Fabrication of Superhydrophobic Nanocomposite Coatings Using Polytetrafluoroethylene and Silica Nanoparticles

Contact Info

Product

Resources

About