Membrane Gas Separation

178
diffusion coeffi cients for nitrogen and 
oxygen in air 177
downstream permeation curves 172
experimental setup 166
permeation data 170–72
preparation of 166
schematic of membrane with boundary 
conditions and direction of fl ow 
161
time lag method and D1-D8 system 
167–71
polymeric membranes, plasticization of 
211
polymers
applications of 228
fl uorinated 59
free volume 60–61
hyper-branched 4, 6, 7
plasticization of 7

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Index
367
poly(methylmethacrylate) (PMMA) 63
polynorbornene
effects of introduction of Si(CH
3
) 
groups in various main chains 44
fractional free volume and X-ray 
scattering data of addition-type 52
structure of 44
study of 43–57
see also PTMSN
poly( p-phenyleneterephthalamide) 
(PPTA) 258
polyphenylene, hyperbranched 4
polypropylene plants 299
recovery of hydrocarbon monomers 
298
polypropyleneimide 8
polystyrene, local free volume 63
polysulfone 207
CH
4
permeability 221
CO
2
permeability 216, 220, 221
water competitive sorption into 220–22
poly(trimethylsilylnorbornene) (PTMSN) 
55–56
Arrhenius dependence of permeability 
coeffi cients in 48
correlation of 
Δ
H
m
vs V
c
54, 54
correlation of S vs critical temperature 
of solutes 51
effects of ageing on 47
effects of pressure on the permeability 
coeffi cients of 49, 49
free volume elements 55
gas permeability 45–50
PALS data for 52, 52–53
parameters of the Arrhenius 
dependence of permeability in 49
permeability coeffi cients 46, 47
permeability, diffusion and solubility 
coeffi cients of gases in 51
permselectivity or separation factors