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. 2021 Sep 16;11(9):713. doi: 10.3390/membranes11090713

Table 1.

Physicochemical properties and cost of some commercial fluorinated and non-fluorinated polymers.

Chemical Structure Abbreviation Cost 1, EUR Tg, °C Density, g/cm3 He-CH4 Selectivity N2-CH4 Selectivity He-H2 Selectivity Ref.
graphic file with name membranes-11-00713-i001.jpg Polysulfone 12 190 1.24 50 0.96 0.93 [29]
graphic file with name membranes-11-00713-i002.jpg Ethyl cellulose 0.7 110–130 1.14 5.7 0.46 0.71 This work
graphic file with name membranes-11-00713-i003.jpg Polyphenyleneoxide 9.5 211 1.06 8.7 0.64 0.62 This work
graphic file with name membranes-11-00713-i004.jpg Nafion 486 - 2.0 401 2.5 4.4 [30,31]
Inline graphic
m = 40 mol %, n = 60 mol %		 Hyflon AD60 180 125 - 167 3.4 2.9 [32]
Inline graphic
m = 65 mol %, n = 35 mol %		 AF1600 384 160 1.78 20 1.3 1.7 [33]
Inline graphic
m = 87 mol %, n = 13 mol %		 AF2400 400 240 1.67 8 1.4 1.2 [34]

1 The costs were extracted from https://www.sigmaaldrich.com/ (accessed on 1 September 2021) and are expressed as prices per gram of polymer.