Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
641900 | Separation and Purification Technology | 2013 | 5 Pages |
We report for the first time successful crosslinking of polyamide–imide (Torlon®) based membranes using di-isocyanates. The crosslinked membranes are resistant to N-methyl pyrrolidone (which is solvent of the non-crosslinked membranes) and have very good mechanical properties. In contrast to the state-of-the-art polyimide crosslinked membranes, the created covalent bond is expected to be thermally stable enabling applications at elevated temperatures. The transport characteristics (permeance and molecular weight cut off – MWCO) of the crosslinked membranes are changed in comparison to non-crosslinked ones. This suggests that the crosslinking process could be used to tailor these characteristics.
► Crosslinking of polyamide–imide (Torlon®) based membranes using di-isocyanates. ► Crosslinked membranes are resistant to N-methyl pyrrolidone. ► Transport characteristics of the new membranes can be tailored via the crosslinking process.