Superhydrophobic polyimide films with a hierarchical topography : combined replica molding and layer-by-layer assembly

Artificial superhydrophobic surfaces with a hierarchical topography were fabricated by using layer-by-layer assembly of polyelectrolytes and silica nanoparticles on microsphere-patterned polyimide precursor substrates followed with thermal and fluoroalkylsilane treatment. In this special hierarchica...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 24(2008), 21 vom: 04. Nov., Seite 12651-7
1. Verfasser: Zhao, Yan (VerfasserIn)
Weitere Verfasser: Li, Mei, Lu, Qinghua, Shi, Zhengyu
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2008
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
LEADER 01000naa a22002652 4500
001 NLM182925757
003 DE-627
005 20231223163710.0
007 cr uuu---uuuuu
008 231223s2008 xx |||||o 00| ||eng c
024 7 |a 10.1021/la8024364  |2 doi 
028 5 2 |a pubmed24n0610.xml 
035 |a (DE-627)NLM182925757 
035 |a (NLM)18844387 
040 |a DE-627  |b ger  |c DE-627  |e rakwb 
041 |a eng 
100 1 |a Zhao, Yan  |e verfasserin  |4 aut 
245 1 0 |a Superhydrophobic polyimide films with a hierarchical topography  |b combined replica molding and layer-by-layer assembly 
264 1 |c 2008 
336 |a Text  |b txt  |2 rdacontent 
337 |a ƒaComputermedien  |b c  |2 rdamedia 
338 |a ƒa Online-Ressource  |b cr  |2 rdacarrier 
500 |a Date Completed 01.12.2008 
500 |a Date Revised 30.10.2008 
500 |a published: Print-Electronic 
500 |a Citation Status PubMed-not-MEDLINE 
520 |a Artificial superhydrophobic surfaces with a hierarchical topography were fabricated by using layer-by-layer assembly of polyelectrolytes and silica nanoparticles on microsphere-patterned polyimide precursor substrates followed with thermal and fluoroalkylsilane treatment. In this special hierarchical topography, micrometer-scale structures were provided by replica molding of polyamic acid using two-dimensional arrays of polystyrene latex spheres as templates, and nanosized silica particles were then assembled on these microspheres to construct finer structures at the nanoscale. Heat treatment was conducted to induce chemical cross-linking between polyelectrolytes and simultaneously convert polyamic acid to polyimide. After surface modification with fluoroalkylsilane, the as-prepared highly hydrophilic surface was endowed with superhydrophobicity due to the bioinspired combination of low surface energy materials and hierarchical surface structures. A superhydrophobic surface with a static water contact angle of 160 degrees and sliding angle of less than 10 degrees was obtained. Notably, the polyimide microspheres were integrated with the substrate and were mechanically stable. In addition, the chemical and mechanical stability of the polyelectrolyte/silica nanoparticle multilayers could be increased by heat-induced cross-linking between polyelectrolytes to form nylon-like films, as well as the formation of interfacial chemical bonds 
650 4 |a Journal Article 
700 1 |a Li, Mei  |e verfasserin  |4 aut 
700 1 |a Lu, Qinghua  |e verfasserin  |4 aut 
700 1 |a Shi, Zhengyu  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Langmuir : the ACS journal of surfaces and colloids  |d 1992  |g 24(2008), 21 vom: 04. Nov., Seite 12651-7  |w (DE-627)NLM098181009  |x 1520-5827  |7 nnns 
773 1 8 |g volume:24  |g year:2008  |g number:21  |g day:04  |g month:11  |g pages:12651-7 
856 4 0 |u http://dx.doi.org/10.1021/la8024364  |3 Volltext 
912 |a GBV_USEFLAG_A 
912 |a SYSFLAG_A 
912 |a GBV_NLM 
912 |a GBV_ILN_22 
912 |a GBV_ILN_350 
912 |a GBV_ILN_721 
951 |a AR 
952 |d 24  |j 2008  |e 21  |b 04  |c 11  |h 12651-7