X-ray Photoelectron Spectroscopy Study of Argon Plasma-Treated Fluoropolymers

Golub, Morton A.; Lopata, Eugene S.; Finney, Lorie S.

doi:10.1021/la00022a041

Cited by 43 publications

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“…Apart from being a surface-sensitive modification technique, plasma treatment does not give rise to toxic waste problems as in the case of chemical treatment. Glow discharge generated from various gases, including He, [75,76] Ne, [75] O 2 , [77,78] H 2 , [79,80] N 2 , [81,82] Ar, [83,84] H 2 O vapor, [85] CO 2 , [86,87] SO 2 , [88] NH 3 , [89,90] CF 4 , [75,91] CH 4 , [92] and mixed gases, [93] has been used to activate or functionalize the fluoropolymer surfaces. The effect of plasma treatment on the surface composition of some fluoropolymers is shown in Table 2.…”

Section: Plasma Treatmentmentioning

confidence: 99%

Surface Modification of Fluoropolymers via Molecular Design

2000

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Fluoropolymer surfaces with new and specific functionalities, such as metal‐free conductivity, biocompatability, and bondability to metals, can be obtained through the intelligent choice of functional monomers for graft copolymerization on pre‐activated fluoropolymer surfaces, as highlighted in this review. The Figure shows a gold/fluoropolymer laminate held together by crosslinked glycidyl methacrylate polymer grafted on both surfaces.

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Section: Plasma Treatmentmentioning

confidence: 99%

Surface Modification of Fluoropolymers via Molecular Design

2000

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“…Both pristine (A) and sterilized (AS1) samples show two peaks from the C1s electronic level, i.e. (i) the C-C/C-H peak, composed of carbonaceous carbon at 285 eV; and (ii) the CF 2 peak, due to C bound to two F-atoms at 292 eV [9]. The higher intensity of the latter, much higher than those of the C-C/C-H peak, shows that the C atoms in the polymer coatings are predominantly in CF 2 groups, confirming the presence of a typical PTFE structure.…”

Section: Fig 2 -Sem Images Of Guide Wires Au1 (A) Bu1 (B) and Cu1 (mentioning

confidence: 99%

Effects of reprocessing on chemical and morphological properties of guide wires used in angioplasty

Gelamo¹,

Sene²,

Paiva³

et al. 2013

Revista Brasileira De Cirurgia Cardiovascular

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Objective: To investigate the influence of the reprocessing technique of enzymatic bath with ultrasonic cleaning and ethylene oxide sterilization on the chemical properties and morphological structure of polymeric coatings of guide wire for regular guiding catheter.Methods: These techniques simulated the routine of guide wire reprocessing in many hemodynamic services in Brazil and other countries. Samples from three different manufacturers were verified by scanning electron microscopy and X-ray photoelectron spectroscopy.Results: A single or double sterilization of the catheters with ethylene oxide was not associated with morphological or chemical changes. However, scanning electron microscopy images showed that the washing method was associated with rough morphological changes, including superficial holes and bubbles, in addition to chemical changes of external atomic layers of polymeric coating surfaces, as detected by the X-ray photoelectron spectroscopy method, which is compatible with extended chemical changes on catheter surfaces.

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“…[11][12][13] But the biomedical equipments could be polluted easily because of the low surface energy and hydrophobility of PVDF. To improve surface hydrophilicity of PVDF, a large amount of work had been devoted to the surface modification of fluoropolymers by chemical, 14 plasma, [15][16][17] irradiation, 18 corona discharge, 19 flame, 20 and ozone treatment. 21 Recently, much attention has been centered on the modification of fluoropolymers via surface graft copolymerization or surface-initiated polymerization.…”

Section: Introductionmentioning

confidence: 99%

Controlled grafting of polymer brushes on poly(vinylidene fluoride) films by surface‐initiated atom transfer radical polymerization

Liu

Chen

Zhang

et al. 2006

J of Applied Polymer Sci

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Controlled grafting of well-defined polymer brushes on the poly(vinylidene fluoride) (PVDF) films was carried out by the surface-initiated atom transfer radical polymerization (ATRP). Surface-initiators were immobilized on the PVDF films by surface hydroxylation and esterification of the hydroxyl groups covalently linked to the surface with 2-bromoisobutyrate bromide. Homopolymer brushes of methyl methacrylate (MMA) and poly(ethylene glycol) monomethacrylate (PEGMA) were prepared by ATRP from the ␣-bromoester-functionalized PVDF surface. The chemical composition of the graft-functionalized PVDF surfaces was characterized by X-ray photoelectron spectroscopy (XPS) and attenuated total reflectance (ATR)-FTIR spectroscopy. Kinetics study revealed a linear increase in the graft concentration of PMMA and PEGMA with the reaction time, indicating that the chain growth from the surface was consistent with a "controlled" or "living" process. The "living" chain ends were used as the macroinitiator for the synthesis of diblock copolymer brushes. Water contact angles on PVDF films were reduced by surface grafting of PEGMA and MMA.

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X-ray Photoelectron Spectroscopy Study of Argon Plasma-Treated Fluoropolymers

Cited by 43 publications

References 0 publications

Surface Modification of Fluoropolymers via Molecular Design

Surface Modification of Fluoropolymers via Molecular Design

Effects of reprocessing on chemical and morphological properties of guide wires used in angioplasty

Controlled grafting of polymer brushes on poly(vinylidene fluoride) films by surface‐initiated atom transfer radical polymerization

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