Plasma Modified Polycarbonate Nonwovens as Filtering Material for Liquid Aerosols
Brak miniatury
Data
2014
Tytuł czasopisma
ISSN czasopisma
Tytuł tomu
Wydawca
Instytut Biopolimerów i Włókien Chemicznych (IBWCh) , Łódź, Polska
Institute of Biopolymers and Chemical Fibres, Lodz, Poland
Institute of Biopolymers and Chemical Fibres, Lodz, Poland
Abstrakt
The filter materials commonly used in filtration processes consist of nonwoven fabrics made by melt blowing. In order to improve filtration properties they are subjected to various modifications. This paper presents the treatment of polycarbonate nonwovens with lowpressure cold plasma generated by a 13.56 MHz RF discharge using process gases such as Ar and O2. The effectiveness of such treatment was assessed on the basis of results of the penetration of nonwovens by paraffin oil mist as well as the air flow resistance. The effects of plasma on polycarbonate nonwovens, especially on their surface morphology and chemical structure, were evaluated by electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and X-ray photoelectron spectroscopy (XPS). The results indicate that Ar plasma is a good tool for improving the filtration properties of polycarbonate filtering materials. According to these results, the surface roughness plays an important role in the high-efficiency filtration of liquid aerosols with a small increase in air flow resistance.
Opis
Słowa kluczowe
polycarbonate nonwovens, plasma treatment, liquid aerosols, filtration
Cytowanie
FIBRES & TEXTILES in Eastern Europe, Vol.22, Issue 1(103), pages 76-80