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Analysis of solutions of poly-p-phenylene terephthalamide in concentrated sulphuric acid

✍ Scribed by T. S. Sokolova; S. G. Efimova; A. V. Volokhina; S. P. Papkov; G. I. Kudryavtsev

Publisher
Springer US
Year
1974
Tongue
English
Weight
211 KB
Volume
6
Category
Article
ISSN
0015-0541

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Dynamic birefringence and conformation o
Dynamic birefringence and conformation of poly-p-phenylene terephthalamide molecules in solution
✍ V.N. Tsvetkov; I.N. Shtennikova; T.V. Peker; G.I. Kudriavtsev; A.V. Volokhina; V πŸ“‚ Article πŸ“… 1977 πŸ› Elsevier Science 🌐 English βš– 288 KB

Flow birefringence (FB) for samples of poly-p-phenylene terephthalamide (PPPhTPhA) dissolved in sulphuric acid has been investigated; intrinsic viscosities [~/] of the solutions have been measured. Characteristic values of FB [n] and orientation angles [X/9] of the solutions were determined. Coeffic