Suppression of gas separation membrane plasticization by homogeneous polymer blending
By A. Bos, Ineke G.M. Punt, H. Strathmann, Matthias Wessling. 2001
172 citations recorded by the source corpus.
Plasticization is a phenomenon frequently encountered in the application of glassy polymeric materials for solution-diffusion membranes. Conventional methods for stabilizing the membrane are either annealing or cross-linking, which hardly influence the selectivity of the membrane, but decrease the permeability. For single-gas experiments, the literature shows that plasticization can be stabilized by blending a polymer with high plasticization tendencies with one that is hardly affected by the sorbed molecules. Most permeation experiments are carried out with pure CO2, but little is known about the transport properties determined from mixed gas experiments. Stabilization of plasticization in mixed-gas experiments for polymer blends of the polyimide Matrimid and polysulfone is reported, as well as transport properties of a new homogeneous polymer blend based on Matrimid and the copolyimide P84. Experimental results show that the material is stabilized against carbon dioxide plasticization and selectivity for a carbon dioxide/methane mixture significantly improves.
Subfields: Mechanical Engineering, Organic Chemistry, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/975a7fe0125e0c2500efa5ac61b34875352e8af4
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In Mechanical Engineering
In Organic Chemistry
In Polymers and Plastics
Citations in the corpus
- Intermediate polymer to carbon gas separation membranes based on matrimid PI (2004, unknown): “annealing) [4], (2) thermally induced cross-linking [3], (3) chemical cross-linking [10], (4) inter-penetrating network formation [11], and (5) polymer blending [12,13].”
- MIXED MATRIX MEMBRANES (MMMS) COMPRISING ORGANIC POLYMERS WITH DISPERSED INORGANIC FILLERS FOR GAS SEPARATION (2007, background): “Much fundamental research related to the development of polymers with improved gas separation properties focuses on manipulation of penetrant diffusion coefficient via systematic modification of polymer chemical structure or superstructure and either chemical or thermal post-treatment of polymeric m”
- High pressure gas separation performance of mixed-matrix polymer membranes containing mesoporous Fe(BTC) (2014, methodology): “heat treatment of Matrimid-PI films and blending with plasticization resistant polymers [77,78].”
- Operating temperature effects on the plasticization of polyimide gas separation membranes (2007, background): “[8-12] examining primarily BTDA-based polyimides over a narrow temperature range, Okamoto et al.”