Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 93: Issue 3
Effect of the air-jet and the false-twist texturing processes on the thermomechanical behaviour of polyamide 6.6 yarns
Authors:
A. Manich IIQAB, CSIC Ecotecnologies Department and Thermal Analysis Laboratory Barcelona Spain

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J. Maíllo UPC Departament d’Enginyeria Tèxtil i Paperera Terrassa Spain

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D. Cayuela Intexter, UPC Terrassa Spain

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J. Carilla IIQAB, CSIC Ecotecnologies Department and Thermal Analysis Laboratory Barcelona Spain

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M. Ussman Universidade da Beira Interior Covilhã Beira Portugal

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J. Gacén Intexter, UPC Terrassa Spain

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Pages:
921–926
Online Publication Date:
25 Jun 2008
Publication Date:
01 Sep 2008
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-007-8556-z
Keywords:
air-jet; crystallinity; DSC; false-twist; filament fineness; polyamide 6.6; shrinkage; texturing; thermal stability; TMA
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Abstract  

Polyamide 6.6 multifilament yarns are converted to crimped fibres by texturing in order to simulate the properties of natural staple fibre yarns for textile applications. Texturing is carried out by mechanical stresses (turbulences or twisting) in different atmospheres which affect crystallinity and thermal stability of yarns. Two polyamide yarns with the same linear density but consisting of filaments of different fineness were textured by the air-jet and the false-twist procedures. The influence of texturing conditions and filament fineness on crystallinity and thermomechanical behaviour and dimensional stability were studied by TMA and DSC. The air-jet texturing procedure leads to a slight increase in crystallinity of yarns whereas the false-twist texturing procedure was more effective especially when thicker filaments were textured. The inflection point of the shrinkage curve before melting was a good estimator of the effective temperature of yarn texturing.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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