Conductive Polymer Porous Film with Tunable Wettability and Adhesion

Abstract

A conductive polymer porous film with tunable wettability and adhesion was fabricated by the chloroform solution of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyricacid-methyl-ester (PCBM) via the freeze drying method. The porous film could be obtained from the solution of 0.8 wt%, whose pore diameters ranged from 50 nm to 500 nm. The hydrophobic porous surface with a water contact angle (CA) of 144.7° could be transferred into a hydrophilic surface with CA of 25° by applying a voltage. The water adhesive force on the porous film increased with the increase of the external voltage. The electro-controllable wettability and adhesion of the porous film have potential application in manipulating liquid collection and transportation.

Recent Progress in Fabrication and Applications of Superhydrophobic Coating on Cellulose-Based Substrates

“…In general, there are two general rules for constructing superhydrophobic materials and surfaces [ 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 ]: the coating should have an appropriate hierarchical surface structure with micro-nano dual scales, and the coating must have at least moderately low surface energy component, e.g., hydrocarbon or fluorocarbon compounds. There are various physical and chemical approaches to satisfy these two requirements to realize superhydrophobic abilities for cellulose-based substrates [ 43 , 44 , 45 , 46 , 47 ].…”

Study on the regulation of polythiophene whiskers by electric field induction and the anisotropy of the film surface

“…[18][19][20][21][22][23][24] Assembling soft matter such as conjugated polymers into ordered structures is one of the methods of fabricating anisotropic surfaces. [25][26][27] As a typical conjugated polymer, polythiophene (P3HT) can be aligned or self-assembled through a variety of ways including freeze-drying, 28 electrospinning, [29][30][31] electric field induced [32][33][34] and so on. 26,[35][36][37][38][39][40][41] Macroscopic P3HT fibers can be formed via the DC electric-field-induced assembly of pre-aggregated high aspect ratio P3HT nano-whiskers in solution.…”

Single Solvent‐Based Film Casting Method for the Production of Porous Polymer Films

“…Porous membranes are utilized in many scientific fields due to their applicability in varying applications, such as surface coating, separation sciences, biosensors, optoelectronic devices, biomedical devices, and tissue engineering applications . Fabrication of porous structures from either polymer or metal or ceramics with diverse pore sizes (from nano‐ to micrometer range) have been explored extensively. For example, nano, micro, and macroporous polymer films have proven to be suitable for gas separation, biosensing, and drug release applications and metal and ceramic films have been utilized as thermal barrier coatings …”