Effect of Plasma Surface Modification on Comfort Properties of Polyester/Cotton Blend Fabric

Yilma, Baye Berhanu; Luebben, Joern Felix; Tadesse, Melkie Getnet

doi:10.1590/1980-5373-MR-2021-0021

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Article • Mat. Res. 24 (3) • 2021 • https://doi.org/10.1590/1980-5373-MR-2021-0021 copy

Effect of Plasma Surface Modification on Comfort Properties of Polyester/Cotton Blend Fabric

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

In this study, vacuum oxygen plasma was applied to enhance the comfort properties of polyester/cotton (P/C) blend fabric (65/35%) for tropical climatic conditions. In addition, air and argon plasma were used to examine the aging effect by TEGEWA drop test. Taguchi method was employed to design the experiment and analyze the largest influential variable as well as optimal parameter levels. More attention was given to the evaluation of wickability, water vapour permeability/resistance, air permeability and surface characterization. Results revealed that all plasma treated comfort properties enhanced except air permeability of experimental runs at 1O₂ and 7O₂. Specifically, wickability of fabric increased at least by 43.25% and 37.63% in warp and weft directions, correspondingly, within 5 min of wicking time, whereas the thermal resistance reduced at least by 20.16%. The SEM images depicted the formation of cracks, grooves, nanostructures and high degree of roughness on plasma treated surfaces.

Keywords:
Plasma modification; wickability; comfort; polyester/cotton; skin model

Runs	Runs ID	Flow rate (Nm ³ /s)	Pressure (Pa)	Power (W)	Time (min)
1	1O₂	6.667 x 10^-7	20	600	5
2	2O₂	6.667 x 10^-7	40	700	10
3	3O₂	6.667 x 10^-7	50	800	20
4	4O₂	8.333 x 10^-7	20	700	20
5	5O₂	8.333 x 10^-7	40	800	5
6	6O₂	8.333 x 10^-7	50	600	10
7	7O₂	1 x 10^-6	20	800	10
8	8O₂	1 x 10^-6	40	600	20
9	9O₂	1 x 10^-6	50	700	5

Runs	Level	Flow rate (Nm ³ /s)	Pressure (Pa)	Power (W)	Time (min)
Average	1	35.72*	35.16	35.51	35.41
S/N^a, dB	2	35.34	35.95*	35.49	35.52
	3	35.48	35.43	35.53*	35.61*
Larger is	Delta	0.38	0.79	0.05	0.20
better	Rank	2	1	4	3
Average	1	34.63	35.25*	34.75	34.88*
S/N^b, dB	2	34.95*	34.67	34.81	34.65
	3	34.81	34.47	34.84*	34.86
Larger is	Delta	0.31	0.78	0.09	0.23
better	Rank	2	1	4	3

Runs	Level	Flow rate (Nm ³ /s)	Pressure (Pa)	Power (W)	Time (min)
Average	1	37.20	37.27	37.33*	37.25
S/N^a, dB	2	37.38*	37.28*	37.22	37.32*
	3	37.22	37.24	37.24	37.23
Larger is	Delta	0.18	0.04	0.11	0.09
better	Rank	1	4	2	3
Average	1	-5.490	-5.416	-5.252	-5.504
S/N^b, dB	2	-5.113	-5.276	-5.606*	-5.121
	3	-5.534*	-5.446*	-5.280	-5.512*
Smaller is	Delta	0.421	0.171	0.353	0.391
better	Rank	1	4	3	2

Runs	Level	Flow rate (Nm ³ /s)	Pressure (Pa)	Power (W)	Time (min)
Average	1	-11.85	-12.25	-13.68*	-11.75
S/N^a, dB	2	-11.14	-11.16	-11.37	-12.24*
	3	-12.79*	-12.38*	-10.73	-11.79
Smaller is	Delta	1.65	1.22	2.95	0.49
better	Rank	2	3	1	4
Average	1	41.02	40.82	40.93	41.08
S/N^b, dB	2	41.28*	41.29	41.39*	41.03
	3	41.14	41.33*	41.11	41.32*
Larger is	Delta	0.26	0.51	0.45	0.29
better	Rank	4	1	2	3

Source of variation	DF	Sum of Squares	Mean Square		F-Value	Prob>F
Between groups	9	1247.87		138.65	19.26	5.44E-8^a
Within groups	20	144		7.2
Total	29	1391.87
Between groups	9	966.83		107.43	21.78	1.87E-8^b
Within groups	20	98.67		4.93
Total	29	1065.5
Between groups	9	54.57		6.06	2.17	0.04^c
Within groups	50	139.69		2.79
Total	59	194.26
Between groups	9	0.39		0.04	2.81	0.01^d
Within groups	50	0.77		0.02
Total	59	1.16
Between groups	9	49.44		5.49	190.30	0^e
Within groups	50	1.44		0.03
Total	59	50.88
Between groups	9	1763.49		195.94	12.35	1.60E-12^f
Within groups	90	1428.20	15.87
Total	99	3191.69

Sample	A₁₂₄₁/A₇₂₂	A₁₇₁₂/A₇₂₂
Untreated P/C	0.623	0.547
Ar-plasma treated	0.589	0.448
O₂-plasma treated	0.659	0.599
Air-plasma treated	0.736	0.656

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