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International Journal of Interdisciplinary Research

Table 4 Material layering combinations evaluated via SBA Flat Filter Mode

From: Cloth face mask fit and function for children part two: Material Selection

Material

Air Permeability (cm3/s/cm2)

Filtration efficiency (%)

Moisture content (%)

Moisture capture efficiency (%)

Salt content (%)

Salt capture efficiency (%)

0.3 µm

0.5 µm

1.0 µm

Cotton (C/C/C)

2.61 (0.08)

15.6 (8.7)

80.6 (4.1)

90.1 (1.9)

56.4 (3.0)

1.1 (0.1)

13.2 (1.8)

4.4 (0.3)

Mixed (PET/PP1/PET)

45.14 (1.87)

0*

66.9 (3.8)

84.3 (2.1)

153.7 (12.7)

31.2 (2.9)

26.6 (3.5)

92.2 (7.7)

Surgical Mask (PP2)

47.08 (1.11)

60.8 (8.7)

98.3 (0.2)

99.6 (0.1)

93.2 (54.9)

3.5 (1.9)

22.2 (4.3)

12.8 (1.4)

  1. Standard errors are in parentheses
  2. PP1 single layer of polypropylene nonwoven, PP2 multiple layers of polypropylene nonwoven, C cotton plain weave, PET polyester interlock
  3. *Outside measurable limit