Research Article
Design and Characterization of Electrospun Polyamide Nanofiber Media for Air Filtration Applications
Table 1
Properties of PA solutions, electrospinning process parameters, and resulting nanofiber characteristics.
| |
Experiment number* | Solution parameters | Electrospinning parameters |
Morphology** | Characteristics of the
nanofibers produced | Conc. (%)
(w/v) | Solvent
system | Voltage age
(kV) | Distance (TTCD)
(cm) | Collection
time
(min) | Fiber diameter
(nm) | Basis weight
(g/m2) | Thickness
(m) | Solidity |
| | 1 | 8 | FA | 20 | 6 | 20 | UF | | | 15 | 0.059 | | 2 | 8 | FA | 12 | 6 | 5 | UF | | | 8 | 0.027 | | 3 | 8 | FA | 20 | 12 | 5 | UF | | | 6 | 0.018 | | 4 | 8 | FA | 12 | 12 | 20 | UF | | | 8 | 0.032 | | 5 | 8 | FA | 20 | 12 | 20 | UF | | | 9 | 0.035 | | 6 | 11 | FA | 20 | 6 | 5 | UF + FSN | | | 8 | 0.037 | | 7 | 11 | FA | 20 | 12 | 20 | UF + FSN | | | 9 | 0.037 | | 8 | 11 | FA | 12 | 6 | 5 | UF + FSN | | | 8 | 0.030 | | 9 | 11 | FA | 12 | 12 | 20 | UF + FSN | | | 8 | 0.035 | | 10 | 14 | FA | 20 | 6 | 5 | F + FSN | | | 10 | 0.037 | | 11 | 14 | FA | 12 | 12 | 5 | F | | | 6 | 0.023 | | 12 | 14 | FA | 12 | 6 | 20 | F + SN | | | 15 | 0.055 | | 13 | 14 | FA | 20 | 12 | 20 | F + SN | | | 10 | 0.055 | | 14 | 8 | FA/AA3 : 2 | 20 | 12 | 20 | UF | | | 10 | 0.054 | | 15 | 11 | FA/AA3 : 2 | 12 | 6 | 20 | UF | | | 16 | 0.101 | | 16 | 8 | FA/DCM3 : 2 | 20 | 12 | 20 | F + ST + SN | | | 10 | 0.054 | | 17 | 11 | FA/DCM3 : 2 | 12 | 6 | 20 | F + ST + SN | — | | 11 | 0.103 |
| | 18 | 20 | FA | 20 | 7 | 20 | UF | | | 14 | 0.059 | | 19 | 20 | FA | 12 | 7 | 5 | UF | | | 7 | 0.036 | | 20 | 20 | FA | 20 | 14 | 5 | F | | | 5 | 0.020 | | 21 | 20 | FA | 12 | 14 | 20 | UF | | | 9 | 0.024 | | 22 | 20 | FA | 20 | 14 | 20 | UF | | | 11 | 0.032 | | 23 | 24 | FA | 20 | 7 | 5 | UF + FSN | | | 10 | 0.030 | | 24 | 24 | FA | 20 | 14 | 20 | UF + FSN | | | 11 | 0.036 | | 25 | 24 | FA | 12 | 7 | 5 | UF | | | 10 | 0.035 | | 26 | 24 | FA | 12 | 14 | 20 | UF + FSN | | | 9.5 | 0.031 | | 27 | 28 | FA | 20 | 7 | 5 | UF + FSN | | | 11 | 0.039 | | 28 | 28 | FA | 12 | 14 | 5 | F | | | 6 | 0.032 | | 29 | 28 | FA | 12 | 7 | 20 | F + SN | | | 14 | 0.070 | | 30 | 28 | FA | 20 | 14 | 20 | UF + SN | | | 11 | 0.403 | | 31 | 20 | FA/AA3 : 2 | 20 | 14 | 20 | UF | | | 10 | 0.029 | | 32 | 24 | FA/AA3 : 2 | 12 | 7 | 20 | UF + FSN | | | 10 | 0.054 | | 33 | 20 | FA/DCM3 : 1 | 20 | 14 | 20 | UF + FSN | | | 9 | 0.035 | | 34 | 24 | FA/DCM3 : 1 | 12 | 7 | 20 | F + SN | | | 14 | 0.067 |
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*Experiment numbers 1–17: experiments with PA 6/6 solutions and experiment numbers 18–34: experiments with PA 6 solutions.
**F: fibers; UF: uniform fibers; ST: stick-together fibers; SN: spider-net structure; and FSN: fragmented spider-net structure.
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