High-Quality Cellulosic Fibers Engineered from Cotton-Elastane Textile Waste

Lorena Villar, Inge Schlapp-Hackl, Pablo B. Sánchez*, Michael Hummel*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

35 Lataukset (Pure)

Abstrakti

Even small amounts of elastane in cotton-elastane blended textiles can prevent fiber-to-fiber recycling strategies in textile recycling. Herein, the selective separation of elastane from cotton blends was addressed by the aminolytic degradation of the synthetic component. Polar aprotic solvents were tested as elastane solvents, but side reactions impeded aminolysis with some of them. Aminolysis of elastane succeeded under mild conditions using dimethyl sulfoxide in combination with diethylenetriamine and 1,5-diazabicyclo[4.3.0]non-5-ene as a cleaving agent and catalyst, respectively. The analysis of the nitrogen content in the recovered cellulose fraction demonstrated that 2 h of reaction at 80 °C reduced the elastane content to values lower than 0.08%. The characterization of the recovered cellulose showed that the applied conditions did not affect the macromolecular properties of cellulose and maintained a cellulose I crystal structure. Degraded elastane products were recovered through precipitation with water. Finally, the cellulosic component was turned into new fibers by dry-jet wet spinning with excellent tensile properties.

AlkuperäiskieliEnglanti
Sivut1942–1949
JulkaisuBiomacromolecules
Vuosikerta25
Numero3
Varhainen verkossa julkaisun päivämäärä22 helmik. 2024
DOI - pysyväislinkit
TilaJulkaistu - 11 maalisk. 2024
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Sormenjälki

Sukella tutkimusaiheisiin 'High-Quality Cellulosic Fibers Engineered from Cotton-Elastane Textile Waste'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

Siteeraa tätä