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Table 3 Effect of temperature on the solubility of polyetherimide in different solvents

From: Preparation of polyetherimide membrane from non-toxic solvents for the separation of hydrogen from methane

Solvent Was PEI fully soluble in the solvent?
60 °C 80 °C 100 °C 120 °C 140 °C
n-Methylpyrrolidone (NMP) Y   Y Y Y
Methyl l-lactate (ML) N N N N N
Ethyl lactate (EL) N N N N N
Propylene carbonate (PC) N N N N N
Tributyl o-acetylcitrate (ATBC) N N N N N
Tributyl citrate (TBC) N N N N N
Triethlyl phosphate (TEP) N N N N N
γ-Butyrolactone (GBL) N N Y Y Y