SDS Volume (4009)

Volume 70. Solubility of Gases in Glassy Polymers , p None

Original Measurements

Ash, R.; Barrer, R. M.; Palmer, D. G.; Polymer 11, 421-435 (1970).

Variables:

Temperature: 293.2 - 333.2 K
Pressure: 6.65 - 33.25 kPa

Prepared by:

Yu.P. Yampol'skii

Method/Apparatus/Procedure:

After the equilibrium was attained the remaining gas was swept by mercury. The measurement of the pressure of gas desorbed was performed by means of McLeod type gauge. Corrections for loss of gas by desorption during flushing process were introduced.

Source and Purity of Materials:
  1. Nylon 11 was obtained from Griflex Ltd. Gases (British Oxygen Co) were spectrally pure.
Experimental Data

Neon, Argon, Hydrogen, Carbon dioxide and Polyundecaneamide

Components:

(1) Neon, [7440-01-9] NIST WebBook
(1) Argon, $\ce{ Ar }$; [7440-37-1] NIST WebBook
(1) Hydrogen, $\ce{ H2 }$; [1333-74-0] NIST WebBook
(1) Carbon dioxide, $\ce{ CO2 }$; [124-38-9] NIST WebBook
(2) Poly(undecaneamide) (PA11), $\ce{ (C11H23NO)n }$; [25035-04-5] NIST WebBook

Experimental Values:
Solubility isotherms obeyed Henry's law; the solubility coefficients S /(cm3/cm3 atm) determined from their slopes are given below, as well as the enthalpies of solution DH /(kcal/mol)
T (K)β (cm3(g) cm-3(s) atm-1)ΔH (kcal/mol)
293.2 5.4 x 10-3 1.0
303.2 5.6 x 10-3 1.0
313.2 6.2 x 10-3 1.0
323.2 6.5 x 10-3 1.0
333.2 6.6 x 10-3 1.0
313.2 3.91 x 10-2 -4 x 10-1
323.2 3.88 x 10-2 -4 x 10-1
333.2 3.77 x 10-2 -4 x 10-1
293.2 1.45 x 10-2 5 x 10-1
303.2 1.48 x 10-2 5 x 10-1
313.2 1.50 x 10-2 5 x 10-1
323.2 1.58 x 10-2 5 x 10-1
333.2 1.63 x 10-2 5 x 10-1
313.2 3.68 x 10-1 -3.2
323.2 3.14 x 10-1 -3.2
333.2 2.80 x 10-1 -3.2

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