The effect of anhydrous ammonia on the crystalline-state deformation of nylons 6 and 6,6

The aliphatic polyamides nylon 6 and 6,6 have been cold drawn by using the new concept of reversible plasticization with NH 3 . Two aspects were investigated: the effect of NH 3 plasticization on the stress‐strain behavior of nylon 6,6, and the extent of NH 3 absorption as determined by x‐ray analys...

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Bibliographic Details
Published in:Journal of polymer science. Polymer physics edition 1982-08, Vol.20 (8), p.1485-1496
Main Authors: Kanamoto, Tetsuo, Zachariades, Anagnostis E., Porter, Roger S.
Format: Article
Language:English
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Summary:The aliphatic polyamides nylon 6 and 6,6 have been cold drawn by using the new concept of reversible plasticization with NH 3 . Two aspects were investigated: the effect of NH 3 plasticization on the stress‐strain behavior of nylon 6,6, and the extent of NH 3 absorption as determined by x‐ray analysis for the structurally simpler nylon 6. X‐ray analysis shows that ammonia is absorbed preferentially by the amorphous phase and that the plasticization has a significant effect on the unit‐cell orientation, the small‐angle void scattering, and the interplanar spacings between sheets of hydrogen‐bonded chains. The effect of plasticization was seen in the lower yield stress, the higher draw ratio (up to 8X) and tensile modulus (10 GPa) not attainable with unplasticized specimens.
ISSN:0098-1273
1542-9385
DOI:10.1002/pol.1982.180200813