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Accessing chemically recyclable polyamides via geminal dimethyl substitution.
- Source :
-
Polymer . Apr2024, Vol. 298, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- The development of new chemically recyclable polymers could serve as a means of reducing the plastic pollution and alleviating global energy crisis and monomer design strategy has driven the innovation in this field. In this contribution, α-dimethyl substituted caprolactam (α-DMCL) and γ-dimethyl substituted caprolactam (γ-DMCL) were prepared to evaluate the substitution position effect on chemical recyclability and material performance in polycaprolactam (PCL) system. The introduction of geminal dimethyl substitution to ε-caprolactam (CL) at α and γ position could change the thermal and mechanical properties of the resulting polyamides P(α-DMCL) and P(γ-DMCL). Remarkably, thermal depolymerization of P(γ-DMCL) in presence of potassium caprolactamate (CL-K) could be carried out at 200 °C and converted to γ-DMCL in 91% yield. The recovered γ-DMCL was capable of repolymerization to P(γ-DMCL) without a decrease in reactivity, demonstrating the proof-of-concept recyclability of P(γ-DMCL). [Display omitted] • Geminal dimethyl substitution strategy. • Chemically recyclable polyamides. • Diversified polyamide products. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00323861
- Volume :
- 298
- Database :
- Academic Search Index
- Journal :
- Polymer
- Publication Type :
- Academic Journal
- Accession number :
- 176247249
- Full Text :
- https://doi.org/10.1016/j.polymer.2024.126898