A rapid method of determining the aromatic polyamide content of dimethyl acetamide
| Autor: | L. N. Bykova, M. V. Konovalova, A. G. Venediktova |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
chemistry.chemical_classification
Residue (complex analysis) Materials science Chromatography Precipitation (chemistry) General Chemical Engineering Extraction (chemistry) General Chemistry Polymer Solvent chemistry.chemical_compound Acetic anhydride chemistry General Materials Science Titration Perchloric acid |
| Zdroj: | Fibre Chemistry. 22:357-359 |
| ISSN: | 1573-8493 0015-0541 |
| DOI: | 10.1007/bf00552532 |
| Popis: | A rapid method of determining the polymer content of spinning solution in the concentration range from 7–20% by wt. has been developed; it is based on precipitation of the polymer in acetic anhydride, extraction of the solvent, and subsequent titration of it with perchloric acid. A comparison of the results obtained using the rapid procedure and the dry residue method has been carried out. -- The procedure developed is characterized by accuracy and rapidity in the determination. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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