PLA and PP Composite Nonwoven with Antimicrobial Activity for Filtration Applications

Table 2

Mass per unit area, fibre diameter, average air permeability, average maximum breaking force, and relative elongation at maximum force of the composite nonwovens.

Analysed parameter	PLA/PP; nonwoven	PLA/PP/paraffin nonwoven	PLA/PP/paraffin/CuO·SiO2 nonwoven
Mass per unit area (g/m^2)	159 3	143 2	149 10
Fibre diameter (µm)
Average	8.91	7.75	4.23
Minimal	2.17	1.99	0.91
Maximal	22.89	20.72	10.09
Average air permeability (mm/s)
100 Pa	468 17	510 20	426 25
200 Pa	920 30	990 30	840 50
Average maximum breaking force (N)
Machine direction	42.6 4.2	33.3 4.0	10.8 1.9
Cross direction	34.1 1.1	26.4 3.4	8.2 3.1
Relative elongation at maximum force (%)
Machine direction	18.0 1.5	28.0 3.5	3.5 0.5
Cross direction	19.5 4.5	25.0 8.5	4.0 1.5