8—DETERMINATION OF RELATIVE VISCOSITY OF NYLON 6.6 YARN IN 90% FORMIC ACID
- 1 March 1957
- journal article
- research article
- Published by Taylor & Francis in Journal of the Textile Institute Transactions
- Vol. 48 (3) , T86-T97
- https://doi.org/10.1080/19447025708659760
Abstract
A method for the determination of the relative viscosity of nylon 6.6 yarn in 90% formic acid, which has been employed with satisfactory results in large-scale routine testing for several years, is described. It is preferred to previously published methods employing m-cresol as solvent because of its greater reproducibility and higher speed. The effects of the more important variables are discussed, and practical tolerances to ensure good precision are indicated.Keywords
This publication has 4 references indexed in Scilit:
- Polyelectrolyte Behavior of Polyamides. I. Viscosities of Solutions of Linear Polyamides in Formic Acid and in Sulfuric Acid1Journal of the American Chemical Society, 1951
- The Relation of the Viscosity of Nylon Solutions in Formic Acid to Molecular Weight as Determined by End-Group MeasurementsJournal of the American Chemical Society, 1947
- The Fluidity of Nylon Solutions in m‐Cresol—Part IIJournal of the Society of Dyers and Colourists, 1945
- The Fluidity of Nylon Solutions in m‐Cresol: Measurement of Chemical Damage in Nylon TextilesJournal of the Society of Dyers and Colourists, 1943