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Functionalisation of Polypropylene. Part I. Mechanical, Electric and Sorptive Properties of PP Fibres Modified with Concentrates Consisting of Copolyamides and Nanoclay

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Concentrates of copolyamides consisting of copolyamide e-caprolactam + nylon salt of adipic acid and diethylenetriamine and nylon salt of 1-(2-aminoethyl) piperazine and adipic acid) and the nanoadditive Bentonite were prepared, characterised and used for the preparation of blend polypropylene (PP) fibres. PP fibres modified with 4, 8 and 12 wt.% of the three types of concentrates prepared were spun without a compatibiliser by the standard melting process and drawn at three drawing ratios. Mechanical properties of the modified PP fibres, i.e. tenacity and YoungLs modulus, are better mainly at lower amounts of each concentrate and at higher drawing ratios. The electric properties of the modified PP fibres are positively influenced by all three concentrates.The higher their amount in the modified PP fibres, the better the electrostatic properties. The sorptive properties of the modified PP fibres, i.e. the sorption of water vapour and disperse dyestuffs, are much better in comparison with non modified PP fibres.

Tags: polypropylene, copolyamide, Bentonite, modification, mechanical, electric, sorptive properties.

Citation: Krištofič M., Vassová I., Ujhelyiová A., Ryba J.; Functionalisation of Polypropylene. Part I. Mechanical, Electric and Sorptive Properties of PP Fibres Modified with Concentrates Consisting of Copolyamides and Nanoclay. FIBRES & TEXTILES in Eastern Europe 2011, Vol. 19, No. 2 (85) pp. 18-22.

Published in issue no 2 (85) / 2011, pages 18–22.

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