Surface modification of poly(vinylidene fluoride) by alkaline treatment Part 2. Process modification by the use of phase transfer catalysts

Polymer ◽  
2001 ◽  
Vol 42 (2) ◽  
pp. 403-413 ◽  
Author(s):  
G.J Ross ◽  
J.F Watts ◽  
M.P Hill ◽  
P Morrissey
Keyword(s):  
Surface Modification ◽  
Vinylidene Fluoride ◽  
Phase Transfer ◽  
Alkaline Treatment ◽  
Phase Transfer Catalysts ◽  
Process Modification ◽  
Poly Vinylidene Fluoride

scholarly journals Surface Modification of PLLA, PTFE and PVDF with Extreme Ultraviolet (EUV) to Enhance Cell Adhesion

2020 ◽  
Vol 21 (24) ◽  
pp. 9679
Author(s):  
Adam Lech ◽  
Beata A. Butruk-Raszeja ◽  
Tomasz Ciach ◽  
Krystyna Lawniczak-Jablonska ◽  
Piotr Kuzmiuk ◽  
...  
Keyword(s):  
Surface Modification ◽  
Cell Adhesion ◽  
Endothelial Cell ◽  
Vinylidene Fluoride ◽  
Extreme Ultraviolet ◽  
Cell Number ◽  
Laboratory System ◽  
Poly Vinylidene Fluoride ◽  
The Impact ◽  
Endothelial Cell Adhesion

Recently, extreme ultraviolet (EUV) radiation has been increasingly used to modify polymers. Properties such as the extremely short absorption lengths in polymers and the very strong interaction of EUV photons with materials may play a key role in achieving new biomaterials. The purpose of the study was to examine the impact of EUV radiation on cell adhesion to the surface of modified polymers that are widely used in medicine: poly(tetrafluoroethylene) (PTFE), poly (vinylidene fluoride) (PVDF), and poly-L-(lactic acid) (PLLA). After EUV surface modification, which has been performed using a home-made laboratory system, changes in surface wettability, morphology, chemical composition and cell adhesion polymers were analyzed. For each of the three polymers, the EUV radiation differently effects the process of endothelial cell adhesion, dependent of the parameters applied in the modification process. In the case of PVDF and PTFE, higher cell number and cellular coverage were obtained after EUV radiation with oxygen. In the case of PLLA, better results were obtained for EUV modification with nitrogen. For all three polymers tested, significant improvements in endothelial cell adhesion after EUV modification have been demonstrated.

EUV induced ablation and surface modification of poly(vinylidene fluoride) irradiated in vacuum or gaseous environment

2013 ◽  
Author(s):  
Andrzej Bartnik ◽  
Wojciech Lisowski ◽  
Janusz Sobczak ◽  
Przemyslaw Wachulak ◽  
Boguslaw Budner ◽  
...  
Keyword(s):  
Surface Modification ◽  
Vinylidene Fluoride ◽  
Gaseous Environment ◽  
Poly Vinylidene Fluoride
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