Solutions spinning of the high Tc oxide superconductor. II. Effect of organic acid on the complex formation of PVA with the copper (II) ion

✍ Scribed by Hisayo Tomita; Tomoko Goto

• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: English
• Weight: 469 KB
• Volume: 51
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1994.070510621

✦ Synopsis

As basic research for the solution spinning of the high T, oxide superconductor, the effect of organic acid on the complex formation of poly(viny1 alcohol) (PVA) with the copper [ Cu ( I1 ) ] ion was explored with various carboxylic acids, such as formic acid, acetic acid, n-butylic acid, and lactic acid. The effects of these acids on the interaction between PVA and Cu(I1) acetate in aqueous solution were nonexistent, while a chelation of the Cu(I1) ion and lactic acid was detected. In the solid state, a linear complex of PVA with the Cu (11) ion was formed by adding organic acid. The ligand of the linear complex was highly dependent on the kind of acid used.