The Role of α, γ, and Metastable Polymorphs on Electrospun Polyamide 6/Functionalized Graphene Oxide

Authors

Javier Macossay-Torres, The University of Texas Rio Grande ValleyFollow
Yazmin I. Avila-Vega
Faheem A. Sheikh, The University of Texas Rio Grande Valley
Travis Cantu, The University of Texas Rio Grande Valley
Francisco E. Longoria-Rodriguez
Edgar H. Ramirez-Soria
Rigoberto C. Advincula
Jose Bonilla-Cruz

Document Type

Article

Publication Date

6-2020

Abstract

The present paper describes the addition of nitroxide-functionalized graphene oxide (GOFT) into polyamide 6 (PA6) micro- and nanofibers, which were obtained through electrospinning. SEM micrographs demonstrated the presence of fibers. Tensile testing presented an unexpected and non-obvious behavior, in which the Young’s modulus, tensile strength, and elongation simultaneously and remarkably increased compared to the pristine polymer nanofibers. GOFT induces the hydrogen bonding between the NH group from PA6 with the functional groups, thus promoting higher crystallinity of the polymer matrix. Nonetheless, deconvoluted DSC curves revealed the presence of two quasi-steady polymorphous (b and d phases) contributing to 46% of the total crystallinity. This evidence suggests that their presence and high-ratios are responsible for the unexpected and simultaneous enhancement of tensile properties.

Comments

© 2020 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. Original published version available at https://doi.org/10.1002/marc.202000195

Recommended Citation

Macossay, J., Avila‐Vega, Y. I., Sheikh, F. A., Cantu, T., Longoria‐Rodríguez, F. E., Ramírez‐Soria, E. H., Advíncula, R. C., & Bonilla‐Cruz, J. (2020). The Role of α, γ, and Metastable Polymorphs on Electrospun Polyamide 6/Functionalized Graphene Oxide. Macromolecular Rapid Communications, 2000195. https://doi.org/10.1002/marc.202000195

Publication Title

Macromolecular Rapid Communications

DOI

10.1002/marc.202000195