2.2. Plasma TreatmentThe plasma tre

2.2. Plasma Treatment
The plasma treatments of silk fabrics were carried out with oxygen gas in Diener Vacuum Plasma with low
frequency at 40 kHz for 1 and 5 minutes. The fabric sample was placed onto the anode and then the pressure of the
chamber is adjusted at 0.3 mbar.
2.3. Dyeing Process
The samples treated with oxygen plasma for 1 and 5 minutes then dyed with natural dyes by use of conventional
and microwave dyeing methods with 1: 200 liquor ratio. In the conventional method, the samples were dyed at boiling
temperature for 30, 45, 60, 75 and 90 minutes. And then, the samples were rinsed with cold water and left to dry. In
Habip Dayioglu et al. / Procedia - Social and Behavioral Sciences 195 ( 2015 ) 1609 – 1617 1611
the microwave method, microwave energy applied to the sample by use of Kenwood Mark Type 467 at a frequency of
2.45 GHz. The fabric specimens were immersed into the cool dye solution, and dyed in microwave oven for 0.5, 1, 3,
5 and 7 minutes. And then, the samples were rinsed with cold water and left to dry