Honeycomb‐like pattern formation on perfluoroethylenepropylene enhanced by plasma treatment

Slepička, Petr; Neznalová, Klára; Fajstavr, Dominik; Kasálková, Nikola Slepičková; Švorčı́k, Václav

doi:10.1002/ppap.201900063

Cited by 13 publications

(19 citation statements)

References 21 publications

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“…Bui et al applied a layer of PLLA on a glass substrate, whereas we used a fluorinated polymer which was plasma-activated. We previously investigated the influence of plasma modification parameters on the formation of HCP-like structures from PLLA [ 20 ]. At a lower power (3 W) and different plasma exposure times, the pore size was the same; on the contrary, at a higher power (8 W), the pore size changed at different modification times.…”

Section: Resultsmentioning

confidence: 99%

“…In the graph, the dashed line shows the value (104.4°) of the contact angle of the unmodified substrate (pristine). The influence of plasma parameters on the prepared pattern and corresponding changes in the contact angles were investigated previously [ 20 ]. For samples with 2 and 3 g of PLLA, the contact angles decreased immediately after the first day of aging in comparison to pristine FEP sample, which corresponds to a sharp increase in the surface wettability.…”

Section: Resultsmentioning

confidence: 99%

“…As well as the wettability, surface chemical changes depending on plasma treatment were studied in the previous study [ 20 ]. This time, we focused on changes in surface chemistry, depending on the amount of PLLA in the HCP-like layer ( Figure 4 ).…”

Section: Resultsmentioning

confidence: 99%

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PLLA Honeycomb-Like Pattern on Fluorinated Ethylene Propylene as a Substrate for Fibroblast Growth

et al. 2020

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In this study, we present the surface patterning of a biopolymer poly(l-lactide) (PLLA) for fibroblast growth enhancement. The patterning is based on a self-organized pore arrangement directly fabricated from a ternary system of a solvent-nonsolvent biopolymer. We successfully created a porous honeycomb-like pattern (HCP) on a thermally resistant polymer—fluorinated ethylene propylene (FEP). An important preparation step for HCP is activation of the substrate in Ar plasma discharge. The polymer activation leads to changes in the surface chemistry, which corresponds to an increase in the substrate surface wettability. The aim of this study was to evaluate the influence of the PLLA concentration in solution on the surface morphology, roughness, wettability, and chemistry, and subsequently, also on fibroblast proliferation. We confirmed that the amount of PLLA in solution significantly affects the material surface properties. The pore size of the prepared layers, the surface wettability, and the surface oxygen content increased with an increasing amount of biopolymer in the coating solution. The optimal amount was 1 g of PLLA, which resulted in the highest number of cells after 6 days from seeding; however, all three biopolymer concentrations exhibited significantly better results compared to pristine FEP. The cytocompatibility tests showed that the HCP promoted the attachment of cell filopodia to the underlying substrate and, thus, significantly improved the cell–material interactions. We prepared a honeycomb biodegradable support for enhanced cell growth, so the surface properties of perfluoroethylenepropylene were significantly enhanced.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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PLLA Honeycomb-Like Pattern on Fluorinated Ethylene Propylene as a Substrate for Fibroblast Growth

et al. 2020

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“…To morphologically control the polymer film, we chose an improved phase separation method. Using this technique, we have successfully prepared an HCP layer from poly-L-lactic acid (PLLA) and acetate cellulose on plasma-modified FEP [ 49 ]. As previously mentioned, PS is a widely used material for tissue culture and it was the first candidate for the construction of HCP structures.…”

Section: Introductionmentioning

confidence: 99%

Cell Behavior of Primary Fibroblasts and Osteoblasts on Plasma-Treated Fluorinated Polymer Coated with Honeycomb Polystyrene

et al. 2021

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The development of new biocompatible polymer substrates is still of interest to many research teams. We aimed to combine a plasma treatment of fluorinated ethylene propylene (FEP) substrate with a technique of improved phase separation. Plasma exposure served for substrate activation and modification of surface properties, such as roughness, chemistry, and wettability. The treated FEP substrate was applied for the growth of a honeycomb-like pattern from polystyrene solution. The properties of the pattern strongly depended on the primary plasma exposure of the FEP substrate. The physico-chemical properties such as changes of the surface chemistry, wettability, and morphology of the prepared pattern were determined. The cell response of primary fibroblasts and osteoblasts was studied on a honeycomb pattern. The prepared honeycomb-like pattern from polystyrene showed an increase in cell viability and a positive effect on cell adhesion and proliferation for both primary fibroblasts and osteoblasts.

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“…This collapse was connected with a further increase in roughness and effective surface area which may also play an important role in antibacterial properties, which will be discussed further in this article. The increase in laser fluence up to 16 mJ•cm −2 induced a specific type of a PS pattern, which can be described as a honeycomb-like pattern ( Figure 2), and was previously detected, e.g., for a biopolymer network prepared by an induced phase separation technique [32]. However, significant differences can be found, such as smaller dimension of a pattern unit and lower uniformity of the pattern structure.…”

Section: Resultsmentioning

confidence: 51%

Nanostructured Polystyrene Doped with Acetylsalicylic Acid and Its Antibacterial Properties

et al. 2020

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Homogeneous polystyrene foils doped with different concentrations of acetylsalicylic acid were prepared by the solvent casting method. The surface morphology and surface chemistry of as-prepared foils were characterized in detail. Excimer laser (krypton fluoride, a wavelength of 248 nm) was used for surface nanopatterning of doped polystyrene foils. Certain combinations of laser fluence and number of laser pulses led to formation of laser-induced periodic surface structures (LIPSS) on the exposed surface. Formation of the pattern was affected by the presence of a dopant in the polystyrene structure. Significant differences in surface chemistry and morphology of laser-treated foils compared to both pristine and doped polystyrene were detected. The pattern width and height were both affected by selection of input excimer exposure conditions, and the amount of 6000 pulses was determined as optimal. The possibility of nanostructuring of a honeycomb-like pattern doped with acetylsalicylic acid was also demonstrated. Selected nanostructured surfaces were used for study the antibacterial properties for a model bacteria strain of S. aureus. The combination of altered surface chemistry and morphology of polystyrene was confirmed to have an excellent antibacterial properties.

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Honeycomb‐like pattern formation on perfluoroethylenepropylene enhanced by plasma treatment

Cited by 13 publications

References 21 publications

PLLA Honeycomb-Like Pattern on Fluorinated Ethylene Propylene as a Substrate for Fibroblast Growth

PLLA Honeycomb-Like Pattern on Fluorinated Ethylene Propylene as a Substrate for Fibroblast Growth

Cell Behavior of Primary Fibroblasts and Osteoblasts on Plasma-Treated Fluorinated Polymer Coated with Honeycomb Polystyrene

Nanostructured Polystyrene Doped with Acetylsalicylic Acid and Its Antibacterial Properties

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