Plasma deposition of thin fluorocarbon films for increased membrane hemocompatibility

Clarotti, G.; Schué, François; Sledz, J.; Geckeler, Kurt E.; Göpel, Wolfgang; Orsetti, A

doi:10.1016/0376-7388(91)80022-x

Cited by 20 publications

(8 citation statements)

References 5 publications

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“…Recently, plasma polymerization was successfully applied to alter hydrophilic surfaces, especially those of layered silicate clays 16, 17. Previously, we used this cost‐effective, time‐saving and solvent‐free technique to increase the biocompatibility of polymer membranes 18–21. To the best of our knowledge, the effects of new plasma‐modified hydrophobic surfaces of clays on the mechanical properties of PCNs have not been studied so far.…”

Section: Introductionmentioning

confidence: 99%

Plasma‐modified halloysite nanocomposites: effect of plasma modification on the structure and dynamic mechanical properties of halloysite–polystyrene nanocomposites

Shamsi

Luqman

Başarír

et al. 2010

Polymer International

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Plasma polymerization of styrene was used to modify the hydrophilic surfaces of halloysite nanotubes to investigate the reinforcement effect of new hydrophobic surfaces on the dynamic mechanical properties of halloysite-polystyrene nanocomposites at various degrees of loading. Pristine and plasma-modified halloysite-polystyrene nanocomposites were synthesized by solution blending and characterized using various techniques. The storage moduli and glass transition temperatures of the composites were analyzed using dynamic mechanical thermal analysis. It was found that the rubbery moduli increased substantially after plasma coating with styrene due to the compatibility of the new hydrophobic halloysite surfaces with the polystyrene polymer matrix. In addition, the rubbery moduli increased with increasing amount of clay. The glass transition temperatures of the composites did not change significantly with the amount of clay. The strengths of the plasma-modified composites were also compared with those of recently reported halloysite-epoxy resin composites.

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Section: Introductionmentioning

confidence: 99%

Plasma‐modified halloysite nanocomposites: effect of plasma modification on the structure and dynamic mechanical properties of halloysite–polystyrene nanocomposites

Shamsi

Luqman

Başarír

et al. 2010

Polymer International

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“…This method is based upon the activation and reaction of a precursor molecule by a non-equilibrium electrical discharge these films find application as hydrophobic, , protective, , and biocompatible coatings. , Low-pressure electrical discharges are capable of generating a range of chemically reactive species from a wide variety of precursor molecules . Ions, radicals, electrons, metastables, and photons contained within the glow discharge can all contribute toward the deposition of polymeric material over all surfaces in contact with the plasma.…”

Section: Introductionmentioning

confidence: 99%

Pulsed Plasma Polymerization of Perfluorocyclohexane

1996

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Pulsed versus continuous wave plasma polymerization of perfluorocyclohexane is compared as a function of duty cycle off-time, on-time, and peak power. The chemical composition of the deposited films has been determined by X-ray photoelectron spectroscopy (XPS). A greater retention of the chemical structure associated with the precursor molecule is found for the pulsed plasma polymerization experiments. This can be rationalized in terms of the relative perturbation of reactive species contained in the electrical discharge.

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“…Figure 6(b) to (d) show the nature of the surface of the plasma polymerized ABG coated PET at RF powers of 30-100 W. At 30 and 50 W, the surface features were very much similar and therefore we have provided AFM picture of only 30 W. It is seen that the plasma polymerized ABG films are almost smooth and uniform in coverage of the substrate. The surface modification involving plasma polymerization of a polymer itself generates a smooth and uniform surface is particularly noteworthy and could be considered as a pointer to better hemocompatibility [24].…”

Section: Resultsmentioning

confidence: 99%

Blood Compatibility of Surface Modified Poly(ethylene terephthalate) (PET) by Plasma Polymerized Acetobromo-α-D-glucose

et al. 2009

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Poly (ethylene terephthalate) (PET) was surface modified by plasma polymerization of acetobromo-alpha-D-glucose (ABG) at different radio frequency (RF) powers. Plasma polymerization was carried out by vaporizing ABG in the powder form by heating at 135 degrees C. Surface modification resulted in improved hydrophilicity and smoothness of the surface especially at low RF powers (30-50 W), but at high RF powers, the surface was found to be etched and the hydrophilicity decreased as evidenced by atomic force microscopy (AFM) and contact angle measurements. The plasma polymerized ABG film was found to be extensively cross-linked as evidenced by its insolubility in water. Infra red (IR) and X-ray photoelectron spectroscopy (XPS) were employed to characterize the plasma polymerized ABG films. IR studies revealed that at lower RF powers, polymerization was taking place mainly by breaking up of acetoxy group while retaining the ring structures to a major extent during the polymerization process whereas at high RF powers, the rupture of ring structures was indicated. XPS indicated a reduction in the percentage of oxygen in the polymers going from low to high RF powers suggestive of complete destruction of the acetoxy group at high RF powers. Cross-cut tests showed excellent adhesive properties of the plasma polymerized ABG films onto PET. Static platelet adhesion tests using platelet rich human plasma showed significantly reduced adhesion of platelets onto modified PET surface as evidenced by scanning electron microscopy. Polymerization of glucose and its derivatives using RF plasma has not been reported so far and the preliminary results reported in this study shows that this could be an interesting approach in the surface modification of biomaterials.

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Plasma deposition of thin fluorocarbon films for increased membrane hemocompatibility

Cited by 20 publications

References 5 publications

Plasma‐modified halloysite nanocomposites: effect of plasma modification on the structure and dynamic mechanical properties of halloysite–polystyrene nanocomposites

Plasma‐modified halloysite nanocomposites: effect of plasma modification on the structure and dynamic mechanical properties of halloysite–polystyrene nanocomposites

Pulsed Plasma Polymerization of Perfluorocyclohexane

Blood Compatibility of Surface Modified Poly(ethylene terephthalate) (PET) by Plasma Polymerized Acetobromo-α-D-glucose

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