Isoelectric focusing in cyclic olefin copolymer microfluidic channels coated by polyacrylamide using a UV photografting method

2005 ◽  
Vol 26 (9) ◽  
pp. 1800-1806 ◽  
Author(s):  
Chen Li ◽  
Yanou Yang ◽  
Harold G. Craighead ◽  
Kelvin H. Lee
Keyword(s):  
Isoelectric Focusing ◽  
Microfluidic Channels ◽  
Cyclic Olefin Copolymer ◽  
Cyclic Olefin

scholarly journals Tuning the Surface Wettability of Cyclic Olefin Copolymer by Plasma Treatment and Graphene Oxide Deposition and Reduction

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2305
Author(s):  
Fadi Dawaymeh ◽  
Yawar Abbas ◽  
Maryam Khaleel ◽  
Anas Alazzam ◽  
Nahla Alamoodi
Keyword(s):  
Contact Angle ◽  
Plasma Treatment ◽  
Treatment Duration ◽  
Chemical Reduction ◽  
Surface Wettability ◽  
Oxygen Plasma Treatment ◽  
Microfluidic Channels ◽  
Cyclic Olefin Copolymer ◽  
Cyclic Olefin ◽  
Reduction Methods

Selective altering of surface wettability in microfluidic channels provides a suitable platform for a large range of processes, such as the phase separation of multiphase systems, synthesis of reaction controlled, nanoliter sized droplet reactors, and catalyst impregnation. Herein we study the feasibility to tune the wettability of a flexible cyclic olefin copolymer (COC). Two methods were considered for enhancing the surface hydrophilicity. The first is argon/oxygen plasma treatment, where the effect of treatment duration on water contact angle and COC surface morphology and chemistry were investigated, and the second is coating COC with GO dispersions of different concentrations. For enhancing the hydrophobicity of GO-coated COC surfaces, three reduction methods were considered: chemical reduction by Hydroiodic acid (HI), thermal reduction, and photo reduction by exposure of GO-coated COC to UV light. The results show that as the GO concentration and plasma treatment duration increased, a significant decrease in contact angle was observed, which confirmed the ability to enhance the wettability of the COC surface. The increase in hydrophilicity during plasma treatment was associated with the increase in surface roughness on the treated surfaces, while the increase during GO coating was associated with introducing oxygen-containing groups on the GO-coated COC surfaces. The results also show that the different reduction methods considered can increase the contact angle and improve the hydrophobicity of a GO-coated COC surface. It was found that the significant improvement in hydrophobicity was related to the reduction of oxygen-containing groups on the GO-coated COC modified surface.

scholarly journals Tacky cyclic olefin copolymer: a biocompatible bonding technique for the fabrication of microfluidic channels in COC

Lab on a Chip ◽  
2016 ◽  
Vol 16 (9) ◽  
pp. 1561-1564 ◽  
Author(s):  
Nico Keller ◽  
Tobias M. Nargang ◽  
Matthias Runck ◽  
Frederik Kotz ◽  
Andreas Striegel ◽  
...  
Keyword(s):  
Microfluidic Channels ◽  
Cyclic Olefin Copolymer ◽  
Cyclic Olefin ◽  
Efficient Process ◽  
Cost Efficient ◽  
Bonding Technique

A fast and cost-efficient process for bonding of COC for the fabrication of biologically functionalized microfluidic channels is presented.

Effect of the number of arms on the mechanical properties of a star-shaped cyclic olefin copolymer

2019 ◽  
Vol 10 (41) ◽  
pp. 5578-5583 ◽  
Author(s):  
Takumitsu Kida ◽  
Ryo Tanaka ◽  
Koh-hei Nitta ◽  
Takeshi Shiono
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Physical Properties ◽  
Secondary Amine ◽  
Aggregation Number ◽  
Drastic Change ◽  
Cyclic Olefin Copolymer ◽  
Cyclic Olefin

The increase of aggregation number in a star-shaped cyclic olefin copolymer was succeeded by using a triazine-based secondary amine, which caused a drastic change in physical properties without changing the thermal properties.

New Cyclic Olefin Copolymer for the Preparation of Thermally Responsive Luminescent Films

2009 ◽  
Vol 210 (9) ◽  
pp. 728-735 ◽  
Author(s):  
Filippo Donati ◽  
Andrea Pucci ◽  
Laura Boggioni ◽  
Incoronata Tritto ◽  
Giacomo Ruggeri
Keyword(s):  
Cyclic Olefin Copolymer ◽  
Cyclic Olefin ◽  
Thermally Responsive ◽  
Luminescent Films

Preparation and Characterization of PiezoelectricI Foams Based on Cyclic Olefin Copolymer

2021 ◽  
Author(s):  
Hui Wang ◽  
◽  
Yan Li ◽  
Xiaolin Wang ◽  
Zhe Liu ◽  
...  
Keyword(s):  
Cyclic Olefin Copolymer ◽  
Cyclic Olefin

Wettability modification of cyclic olefin copolymer surface and microchannel using micromilling process

2019 ◽  
Vol 37 ◽  
pp. 168-176 ◽  
Author(s):  
Myeong Gu Gang ◽  
Ki Woon Chae ◽  
Wook-Bae Kim ◽  
Young Hun Jung ◽  
Martin B.G. Jun ◽  
...  
Keyword(s):  
Cyclic Olefin Copolymer ◽  
Cyclic Olefin

Improving the electrical conductivity of ethylene 1-octene copolymer/cyclic olefin copolymer immiscible blends by interfacial localization of MWCNTs

2018 ◽  
Vol 59 (3) ◽  
pp. 447-456 ◽  
Author(s):  
Ali Hosseinpour ◽  
Rasool Nasseri ◽  
Sina Ghiassinejad ◽  
Milad Mehranpour ◽  
Ali Asghar Katbab ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Cyclic Olefin Copolymer ◽  
Cyclic Olefin ◽  
Immiscible Blends

Cyclic olefin copolymer as an X-ray compatible material for microfluidic devices

Lab on a Chip ◽  
2018 ◽  
Vol 18 (1) ◽  
pp. 171-178 ◽  
Author(s):  
Manuela Denz ◽  
Gerrit Brehm ◽  
Clément Y. J. Hémonnot ◽  
Heidi Spears ◽  
Andrew Wittmeier ◽  
...  
Keyword(s):  
Small Angle ◽  
Microfluidic Devices ◽  
Hot Embossing ◽  
Cyclic Olefin Copolymer ◽  
Cyclic Olefin ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Fabrication of X-ray compatible microfluidic devices by hot embossing, and characterization for small angle X-ray scattering.

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