UV/ozone Surface Modification for Long-term Stable Hydrophilic Surface of Polymer Microfluidic Devices

MRS Advances ◽  
2016 ◽  
Vol 1 (11) ◽  
pp. 743-748 ◽  
Author(s):  
Shogo Uehara ◽  
Tsukasa Kawabe ◽  
Peter Wood ◽  
Osamu Tsuji
Keyword(s):  
Surface Modification ◽  
Temperature Control ◽  
Polymer Materials ◽  
Ex Situ ◽  
Ozone Treatment ◽  
Oxygen Plasma Treatment ◽  
Hydrophilic Surfaces ◽  
Hydrophobic Recovery ◽  
Uv Ozone

ABSTRACTFaster and more effective surface modification processes of polymer materials by UV/ozone treatment were investigated. The employment of ex-situ generated ozone and/or temperature control contributed to the faster and more effective modification. The UV/ozone treatment showed long-term stable hydrophilic surfaces for 6 months, in contrast to oxygen plasma treatment, which showed hydrophobic recovery. XPS analysis revealed that UV/ozone treatment with ex-situ generated ozone and temperature control added ester (-COOR) on COP sample compared to UV/ozone treatment without the additional ozone and temperature control.

Enhancing the power generation of Rhodopseudomonas palustris-based MFC

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1261-1268
Author(s):  
Shu Otani ◽  
Dang-Trang Nguyen ◽  
Kozo Taguchi
Keyword(s):  
Activated Carbon ◽  
Rhodopseudomonas Palustris ◽  
Ozone Treatment ◽  
Maximum Power Density ◽  
On Demand ◽  
Long Time ◽  
Dry Conditions ◽  
Carbon Sheet ◽  
Uv Ozone

In this study, a portable and disposable paper-based microbial fuel cell (MFC) was fabricated. The MFC was powered by Rhodopseudomonas palustris bacteria (R. palustris). An activated carbon sheet-based anode pre-loaded organic matter (starch) and R. palustris was used. By using starch in the anode, R. palustris-loaded on the anode could be preserved for a long time in dry conditions. The MFC could generate electricity on-demand activated by adding water to the anode. The activated carbon sheet anode was treated by UV-ozone treatment to remove impurities and to improve its hydrophilicity before being loaded with R. palustris. The developed MFC could generate the maximum power density of 0.9 μW/cm2 and could be preserved for long-term usage with little performance degradation (10% after four weeks).

Surface modification of polycarbonate and polyethylene naphtalate foils by UV-ozone treatment and μPlasma printing

2014 ◽  
Vol 290 ◽  
pp. 381-387 ◽  
Author(s):  
R.O.F. Verkuijlen ◽  
M.H.A. van Dongen ◽  
A.A.E. Stevens ◽  
J. van Geldrop ◽  
J.P.C. Bernards
Keyword(s):  
Surface Modification ◽  
Ozone Treatment ◽  
Uv Ozone

Research on the PDMS Surface Modification Technique

2013 ◽  
Vol 562-565 ◽  
pp. 131-135
Author(s):  
Li Tian ◽  
Lei Wu ◽  
Wei Wang ◽  
Xiao Wei Liu
Keyword(s):  
Contact Angle ◽  
Surface Modification ◽  
Polymer Materials ◽  
Oxygen Plasma Treatment ◽  
Pdms Surface ◽  
Coating Technique ◽  
Long Time ◽  
Aging Property ◽  
Modification Technique ◽  
Hydrophilic Character

UV radiation, oxygen plasma treatment and dynamical coating technique were the three main modification techniques to be widely applied in the surface modification of polymer materials. This paper presented the experiment results of PDMS surface modification with these three techniques. The contact angle was measured to test the modification effect, also the further verification testing of aging property after a long time storage were carried out. Of all the testing results, the dynamical coating technique, 10 layers 0.02% PDDA and PSS (V/V) alternatively adhesion on the PDMS surface, made the contact angle lowed to the 21°, and even after 15 days, it still kept as the 61°and exhibited the better hydrophilic character.

Investigation into Surface Modification of Some Polymeric Fabrics by UV/Ozone Treatment

2004 ◽  
Vol 43 (4) ◽  
pp. 1041-1052 ◽  
Author(s):  
M. N. Michael ◽  
N. A. El-Zaher ◽  
S. F. Ibrahim
Keyword(s):  
Surface Modification ◽  
Ozone Treatment ◽  
Uv Ozone

Sources and prevention of graft infection during long term ex situ liver perfusion

2021 ◽  
Author(s):  
Dilmurodjon Eshmuminov ◽  
Matteo Mueller ◽  
Silvio D. Brugger ◽  
Lucia Bautista Borrego ◽  
Dustin Becker ◽  
...  
Keyword(s):  
Liver Perfusion ◽  
Graft Infection ◽  
Ex Situ
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