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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-24 21:09 |
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Conference: Bucharest University Faculty of Physics 2005 Meeting
Section: Optics, Spectroscopy, Plasma and Lasers
Title:
Deposition of acrylic acid plasma polymer onto poly(ethylene terephthlatate) nuclear track membranes
Authors:
A. Lazea, L.I. Kravets*, S. N. Dmitriev*, G. Dinescu
Affiliation:
National Institute for Laser, Plasma and Radiation Physics, PO Box MG 36 Magurele Bucharest, 77125 Romania;
*Joint Institute for Nuclear Research, Flerov Laboratory of Nuclear Reactions, Dubna, Russia
E-mail
e-mail: dinescug@infim.ro
Keywords:
radiofrequency plasma, plasma polymerization, nuclear track membranes
Abstract:
Polymerization of acrylic acid onto polyester membranes (polyethylene terephthlate (PET) track membranes was carried out in radiofrequency plasma generated in parallel plate discharge configuration. The membrane was placed on the grounded electrode. The acrylic acid vapors were transported in the plasma region by an argon gas flow. The effects of plasma parameters on membrane surface energy, thickness, total mass, pore diameter and transport properties were studied by contact angle, thickness and effective pore diameter measurements.
Plasma polymerization and deposition of an acrylic acid film onto membrane surface was observed from the increase of the membrane thickness and of the membrane weight. In addition, a decrease of the pores size from 0.2 µm up to 0.16 µm for long time plasma treated samples was noticed. The modification of contact angle, as determined by sessile drop method, proves on the change of surface functionalization and roughness. PET membranes treated in argon/acrylic acid plasma show transport properties which depend on the solution pH.
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