| Autor: |
Sysel, Petr, Šindelár, Vladimír, Chánová, Eliška, Wallin, Birgitta |
| Zdroj: |
Polymer Journal; February 2002, Vol. 34 Issue: 2 p54-56, 3p |
| Abstrakt: |
Reaction conditions of the preparation of solutions of polyamic acids in the tetrahydrofuran/methanol mixed solvent (THF/MeOH) were studied. The polyamic acids were based on pyromellitic dianhydride and 4,4’-oxydianiline. Transparent solutions were prepared at 5 wt% and lower concentrations of polyamic acid in the THF/MeOH mixture with component weight ratio ranging from 4:1 to 1:1. The properties of the final polyimide films were compared with those prepared by using N-methyl-2-pyrrolidone as the solvent. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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