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Surface modification of polytetrafluoroethylene using atmospheric pressure plasma jet for medical application

Authors
 Joo Hyon Noh  ;  Hong Koo Baik  ;  In-Seop Lee  ;  Jong-Chul Park  ;  Insup Noh 
Citation
 SURFACE & COATINGS TECHNOLOGY, Vol.201(9-11) : 5097-5101, 2007 
Journal Title
 SURFACE & COATINGS TECHNOLOGY 
ISSN
 0257-8972 
Issue Date
2007
Abstract
Polytetrafluoroethylene (PTFE) is extensively utilized in medical devices and synthetic vascular surgery as an expanded form because of its chemical and mechanical stability. However, clinical applications in small diameter vascular grafts were limited due to lack of its haemocompatibility. In order to improve haemocompatibility or tailor the biological responses to the implant, the surface modification of PTFE was performed with two steps of treatment. After treating PTFE films in a solution of anthraguinone and sodium hydride in dry 100 °C dimethylformamide, the additional modification was performed with O2 atmospheric pressure plasma jet. The water contact angle of chemically treated PTFE was measured as 70.1°. Plasma treatment for 0.25 s decreased contact angle to 35.8°. From the analyses of XPS, plasma treatment might break down the unsaturated carbon bonds and introduce additional functional groups on the surface of the chemically modified PTFE. However, as the treatment time increased, contact angle increased and surface structure was changed, presumably due to etching of the chemical treated layer by oxygen plasma.
Full Text
http://www.sciencedirect.com/science/article/pii/S0257897206007274
DOI
10.1016/j.surfcoat.2006.07.223
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 1. Journal Papers
Yonsei Authors
Park, Jong Chul(박종철) ORCID logo https://orcid.org/0000-0003-0083-5991
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/97380
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