Plasma‐Modified PTFE for Biological Applications: Correlation between Protein‐Resistant Properties and Surface Characteristics | Zendy

Vandencasteele Nicolas | Zendy; Nisol Bernard | Zendy; Viville Pascal | Zendy; Lazzaroni Roberto | Zendy; Castner David G. | Zendy; Reniers François | Zendy

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Plasma‐Modified PTFE for Biological Applications: Correlation between Protein‐Resistant Properties and Surface Characteristics

Author(s) -

Vandencasteele Nicolas,

Nisol Bernard,

Viville Pascal,

Lazzaroni Roberto,

Castner David G.,

Reniers François

Publication year - 2008

Publication title -

plasma processes and polymers

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.644

H-Index - 74

eISSN - 1612-8869

pISSN - 1612-8850

DOI - 10.1002/ppap.200700143

Subject(s) - adsorption , plasma , materials science , surface roughness , analytical chemistry (journal) , etching (microfabrication) , plasma etching , surface finish , polytetrafluoroethylene , oxygen , chemistry , chemical engineering , chromatography , layer (electronics) , composite material , organic chemistry , physics , quantum mechanics , engineering

PTFE samples were treated by low‐pressure O 2 RF plasmas. The adsorption of BSA was used as a probe for the protein‐resistant properties. Exposure of PTFE to an O 2 plasma leads to an increase in chamber pressure. OES reveals the presence of CO, CO 2 and F in the gas phase, indicating a strong etching of the PTFE surface by the plasma. Furthermore, the high‐resolution C1s spectra show CF 3 , CF and CCF components. WCA as high as 160° were observed, indicating a super‐hydrophobic behavior. AFM images of surfaces treated at high plasma power showed an increase in roughness. Lower amounts of BSA adsorption were detected on high power, O 2 plasma‐modified PTFE samples compared to low power, oxygen plasma‐modified ones.

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