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Table 5 Size parameters of four samples analyzed. For each sample the parameters of untreated fibers (identified as std), treated fibers at pH 7.4 and 4.5 after 28 days of treatment are reported

From: Biosolubility of high temperature insulation wools in simulated lung fluids

  RCF AES1 AES2 PCW
Std pH 7.4 pH 4.5 Std pH 7.4 pH 4.5 Std pH 7.4 pH 4.5 Std pH 7.4 pH 4.5
d < 3 μm (%) 69 67 72 55 39 66 64 56 20 24 20
d < 3 μm l > 5 μm (%) 68 65 71 53 39 62 62 55 20 24 20
d < 3 μm l > 20 μm (%) 44 37 49 27 28 19 24 28 11 12 9
DLG (μm) 2.1 2.1 1.7 2.6 3.4 2.5 2.5 2.7 4.2 4.3 4.2
σLG 2.2 2.1 2.7 1.9 2.0 1.9 2 2.1 1.4 1.5 1.5
dG (μm) 2.0 1.5 1.8 2.6 3.9 2.2 2.1 2.5 4.0 3.9 3.9
σd 2.3 3.2 2.3 2.0 2.6 2.0 2.0 2.1 4.0 1.5 1.4
lG (μm) 31.4 31.1 33.3 23.3 28.5 17.2 22.2 26.7 25.6 25.7 22.6
σl 2.3 2.6 2.3 2.2 2.5 2.1 2.3 2.3 1.6 1.7 1.6
  1. Size parameters were not measured for AES1 at pH 7.4 because of complete dissolution of the fibers after 10/15 days of treatment