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Abstract

On treatment with a variety of swelling agents, polyhexamethylene terephthalamide (nylon 6-T) fibers undergo char acteristic changes in tensile properties, x-ray pattern, and dyeability. Microscopically visible voids are permanentlv removed and the uptake of acid and disperse dyestuffs is increased in that portion of the fiber penetrated by the swotting agent. The molecular rearrangement which occurs during this "relaxation" consists of disorientation and probably in volves a change in the relative positioning of successive hydrogen-bonded sheets. It is suggested that the change in dyeing behavior on relaxation consists in general of an increase in extent of the so-called "overdyeing" resulting from the genera tion of additional "vacancies."

Keywords

Polyhexamethylene terephthalamide fibers 6-T nylon fibers Alizarine Sky Blue BS-CF C.I. Part II No. 62105 Interchemical Blue B C.I. Part II No. 61505 Amacel Rubine Red IX C.I. Part II No. 11215 acid dyes Eastone Red N-GLF C.I. No. Disperse Red 35 disperse dyes dyestuffs. Dyed fibers. Triton X-102(TN)alkyl aryl potyether alcohol surfactant deionized water methylenechloride-dichloroacetic acid s-tetrachloroethane-dichloroacetic acid formic acid sulfuric acid HCl Calgon(TN)sodium hexametaphosphate softener. Concentration pH temperature time. Dye uptake tenacity elongation modulus TE1 shade level dye affinity,fiber penetration voids cracking splitting fibrillation. Relaxation. Swelling infinite dyeing finite dyeing.

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References

Brody, H. and Quynn, R.G. , Measurement of Opacity in Fibers, Textile Res. J. 35, 524-529 (1965).

Brody, H. , Overdyeing and Diffusion of Acid Dyes in Nylon, Textile Res. J. 35, 844-850 (1965) ; Brody, H. , The Location of Acid and Disperse Dyes in Polyamides, Textile Res. J. 35, 895-902 (1965).

Forward, M.V. and Palmer, H.J. , The Influence of Heat and of Swelling Agents on 66 Nylon Yarns. Part I. General Experiments on Length Equilibria, J. Textile Inst. 45, T510-T538 ( 1954) ; Palmer, H.J. , Part II. Changes in Length with Time in Aqueous Swelling Media, J. Textile Inst. 45, T539-T558 (1954) ; Forward, M.V. , Part III. Changes in Length at Equilibrium in Dilute Non-Aqueous Phenol Solutions, J. Textile Inst. 45, T559-T568 ( 1954) ; Sakuma, Y. and Rebenfeld, L. , Properties and Structure of Nylon Fibers in Relation to Drawing and Aqueous Phenol Treatments, J. Appl. Polymer Sci. 10, 637-652 (1966).

Quynn, R.G. , Fibers from Polyhexamethylcne Terephthalamide, Part I: Fine Structure, Textile Res. J. 40, 677-682 (1970).

Rosenthal, A.J. , TE1, An Index for Relating Fiber Tenacity and Elongation, Textile Res. J. 36, 593-602 (1966).

Singleton, R.W. , Fiber Testing, in Man-Made Fibers, Vol. 3, edited by Mark, H. F. , et al., New York, Interscience , 1968, pp. 583-585.

Sprague, B.S. and Singleton, R.W. , Fibers from Aromatic Polyamides, Textile Res. J. 35, 999-1008 (1965).

Sprague, B.S. , The Relationship of Fibers Structure to Diffusion of Dyes, J. Polymer Sci., Part C, No. 20, 159-183 (1967).

U. S. Patent 3,475.771, Treatment of Synthetic Polyamide Materials with a Mixture of Halogenated Alkanes and Halogenated Monocarboxylic Acids. Nov. 4, 1969 (to Celanese Corporation).

Fibers from Polyhexamethylene Terephthalamide

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