IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Argon with Nitrogen, Carbon dioxide, Methane, Poly(methyl methacrylate) (PMMA) and Poly(vinylidene fluoride) (PVF2)

Components:
   (1) Poly(methyl methacrylate) (PMMA); ; [9011-14-7]  NIST Chemistry WebBook for detail
   (2) Argon with Nitrogen, Carbon dioxide, Methane; Ar, N2, CO2, CH4; [7440-37-1, 7727-37-9, 124-38-9, 74-82-8]  NIST Chemistry WebBook for detail
   (3) Poly(vinylidene fluoride) (PVF2); ; [24937-79-9]  NIST Chemistry WebBook for detail

Original Measurements:
   J.S. Chiou and D.R. Paul, J. Appl. Sci. 32, 4793 (1986).

Variables:
   Temperature = 308 K
   Pressure = 0-2.7 MPa (0-27 atm)
   Concentration = mass % PVF = 0-100

Prepared By:
   Yu. P. Yampol'skii

Experimental Data:   (Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)

Table 1. Solubility coefficients of various gases in PVF₂ at 308 K
Chemical Name	Keunen coefficient, S [cm³/cm³ atm]
Ar	0.0350
N2	0.0206
CH4	0.0488

Table 2. Dual mode sorption parameters for various gases in PMMA at 308 K
Chemical Name	Henry's law constant, K [cm³(STP)/cm³ atm]	Langmuir's parameter, C_H [cm³(STP) cm^-3]	Affinity Coefficient b [atm^-1]
Ar	0.1150	1.450	0.0480
N2	0.0737	0.814	0.0301
CH4	0.1820	3.620	0.0560

Table 3. Dual mode sorption parameters for argon in extruded PMMA/PVF₂ blends at 308 K
Henry's law constant, K [cm³(STP)/cm³ atm]	Langmuir's parameter, C_H [cm³(STP) cm^-3]	Affinity Coefficient b [atm^-1]	K_a [cm³(STP)/cm³ atm]	Remark(s)
0.0350	—	—	0.0779	100 [PVF(2) mass %]
0.0480	—	—	0.0857	90
0.0568	—	—	0.0849	80
0.0742	—	—	0.0817	60
0.0893	—	—	0.0893	40
0.1040	0.982	0.0345	0.1040	20
0.1150	1.450	0.0480	0.1150	0

View Figure 1 for this Evaluation

View Figure 2 for this Evaluation

View Figure 3 for this Evaluation

Notes:
   Table 3    alpha is the crystallinity of PVF₂ in the blend.

Method/Apparatus/Procedure:
   The apparatus and procedure were the name as described in Ref. 1.

Source and Purity of Materials:
   PMMA: Rohtn and Hess (Plexiglas V(81 1)). glass transition temp. 378 K, completely amorphous. PVF₂: Pennwalt (Kynar 460N), crystallinity 60 %, melting point 433 K. Blends: films prepared by extrusion. Miscible blends were studied.

Estimated Errors:

   Temperature: No information given.

References:
   ¹W. J. Koros, D. P.. Paul, and A. A. Rocha, J. Polym. Sci., Polym. Plays. Ed. 30, 2633 (1985).