Investigation on surface properties of superhydrophobic nanocomposites based on polyvinyl chloride and correlation with cell adhesion behavior

Abstract

The main aim was to study the roles of structural homogeneity and superhydrophobicity on the adhesion of SW colon cancer cells on the surface of polyvinyl chloride (PVC) nanocomposites. Concurrent use of a proper nonsolvent (ethanol) and silica nanoparticles resulted in superhydrophobic behavior and also different surface structures. The effect of added‐ethanol content on the surface properties of PVC nanocomposites was also studied. The synergetic combination of silica and ethanol has led to the formation of a porous surface layer resulting in a considerable boost in the hydrophobic behavior. The scanning electron microscopy, roughness, and X‐ray photoelectron spectroscopy (XPS) analysis results were all in total agreement indicating the substantial change in surface morphology, topography, and composition once the ethanol content was increased to 50 vol.%. The surface structure was notably changed by the addition of polyhedral oligomeric silsesquioxanes (POSS) nanoparticles. It was found that the induced inhomogeneity as a result of POSS addition had an adverse effect on the surface properties. In conclusion, superhydrophobicity could be regarded as a prerequisite for achieving cell‐repellent behavior, but it cannot guarantee a cell repellent surface especially if the surface layer possesses structural inhomogeneity.

Effect of nano‐size nodular structure induced by CNT‐promoted phase separation on the fabrication of superhydrophobic polyvinyl chloride films

“…In contrast to the Sa and Sq parameters, the Sdr is a hybrid parameter which is sensitive to both amplitude and spacing of the roughened structure. 16 As can be seen in Table 2…”

“…There have been reported several kinds of researches on the induction of superhydrophobicity onto the PVC-based surfaces. [16][17][18][19][20][21] Naeemabadi et al 16 have fabricated superhydrophobic and cell-repellent PVC nanocomposite films containing silica and POSS nanoparticles through the NIPS method.…”

“…Therefore, tuning the wetting behavior of PVC‐based surfaces could extend its potential, especially in biomedical‐related applications. There have been reported several kinds of researches on the induction of superhydrophobicity onto the PVC‐based surfaces 16‐21 . Naeemabadi et al 16 have fabricated superhydrophobic and cell‐repellent PVC nanocomposite films containing silica and POSS nanoparticles through the NIPS method.…”

“…There have been reported several kinds of researches on the induction of superhydrophobicity onto the PVC‐based surfaces 16‐21 . Naeemabadi et al 16 have fabricated superhydrophobic and cell‐repellent PVC nanocomposite films containing silica and POSS nanoparticles through the NIPS method. Yang et al 19 have reported on superhydrophobic PVC‐based coatings, which were applied on magnesium alloy through dip coating technique.…”

Fabrication of durable superhydrophobic nanofibrous filters for oil‐water separation using three novel modified nanoparticles (ZnO‐NSPO, AlOO‐NSPO, and TiO2‐NSPO)

“…Wettability of the solid surfaces is one of the important characteristics to find out about the chemical and physical properties of them and is related to chemical composition and geometrical morphology of the surface . Recently, surfaces with a water contact angle (WCA) greater than 150° and a water sliding angle (SA) smaller than 10° (superhydrophobic) and superoleophilic property (oil CA less than 5°) has attracted a great attention for oil and water separation due to property of absorb only oil and repel water completely, as well as other uses in self‐cleaning surfaces, antisticking, and so on . Superhydrophobicity of the lotus leaf is one of the most famous examples of hydrophobic surfaces in nature .…”