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J. Bucheńska, T. Skwarski


Strength and thermal properties of fibres from polyamide-6 grafted with poly(acrylic acid) and poly(itaconic acid)


Polimery 1991, No 3, 105


DOI: dx.doi.org/10.14314/polimery.1991.105

Summary

Grafting of poly(acrylic acid) (PKA) or poly(itaconic acid) (PKI) on polyamide-6 fibres results in a small reduction of mechanical strength of fibres. This reduction depends on the conditions of thermal initiation of the grafting process, on the conditions of the grafting reaction and on the type of polyacid grafted. Grafting of PKA or PKI followed by treatment with copper (II) acetate results in an improvement of high temperature resistance of the fibres (100 h at 160°C) expressed by a lower decrease of mechanical strength during heating. It has been demonstrated by derivatography that grafting of polyamide-6 fibres with PKA or PKI causes a distinct increase both of the initial temperature of mass loss and of the temperature corresponding with the maximum rate of decomposition.


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