A method for mitigating degradation effects on polyamide textile yarn during mechanical recycling
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F25%3A63597579" target="_blank" >RIV/70883521:28610/25:63597579 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/2073-4360/17/24/3243" target="_blank" >https://www.mdpi.com/2073-4360/17/24/3243</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/polym17243243" target="_blank" >10.3390/polym17243243</a>
Alternative languages
Result language
angličtina
Original language name
A method for mitigating degradation effects on polyamide textile yarn during mechanical recycling
Original language description
The phenomenon of fast fashion has resulted in high yarn consumption and growing textile waste from both manufacturing and consumers. Rising environmental awareness and evolving legislation, including landfill restrictions, have prompted the search for sustainable recycling methods to manage textile end-of-life. This study investigates the mechanical recycling of polyamide 6.6 (PA66) yarn using a chain extender (Joncryl) and antioxidant (Irganox). Thermogravimetric analysis (TGA) confirmed that thermal stability in recycled PA66 was maintained compared to the original yarn, and the presence of Joncryl further enhanced this stability. Oxidative-onset temperature (OOT), measured by differential scanning calorimetry (DSC), supported these improvements. Gas chromatography-mass spectrometry (GC/MS) identified key degradation products, which were correlated with changes in the polymer matrix. Mechanical testing showed a 31% decrease in Young's modulus after initial recycling, which was reversed with further processing. This behavior suggests the formation of shortened semi-crystalline chains and new linkages promoted by Joncryl. Viscosity and limiting viscosity number increased by up to 50%, depending on both additive concentrations. Overall, Joncryl and Irganox enhanced viscosity, mechanical strength, and notably thermal stability, confirming their suitability for recyclable textile-grade PA66 yarns.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polymers
ISSN
2073-4360
e-ISSN
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Volume of the periodical
17
Issue of the periodical within the volume
24
Country of publishing house
CH - SWITZERLAND
Number of pages
16
Pages from-to
nestránkováno
UT code for WoS article
001646493700001
EID of the result in the Scopus database
2-s2.0-105026102458