Plasma surface modification of the inner surface of small diameter non ga s-permeable low-density polyethylene (LDPE) tubing has been accomplished. Surface characterization results show that the inner surface of the tubing can be modified uniformly by ammonia, hexamethyldisiloxane (HMDSO), and HMDSO/NH3 gas mixtures. Captive bubble contact angle measurements demonstrated that the surfaces modified by the ammonia plasma and propane sultone posttreatment are more hydrophilic than the control surface. The addition of ammonia to the HMDSO gas reduced the contact angle values of the plasma polymerized siloxanes. Ex vivo canine shunt experiments indicated that the ammonia plasma modified surface and the ammonia/propane sultone-treated surface are more platelet activating than the control (i.e., nontreated LDPE). In contrast, the HMDSO-based plasma polymerized surfaces showed similar blood compatibility to that of the control.
|頁（從 - 到）||157-166|
|期刊||Journal of Applied Polymer Science: Applied Polymer Symposium|
|出版狀態||Published - 1994 十二月 1|
|事件||Proceedings of the American Chemical Society Symposium on Plasma Deposition of Polymeric Thin Films: Chemistry, Characterization, and Applications - Denver, CO, USA|
持續時間: 1993 三月 28 → 1993 三月 29
All Science Journal Classification (ASJC) codes