The aim of this study was to assess the effects of commercially available and relatively inexpensive enzyme preparations based on endo 1,4-β-xylanase, pectinase and xyloglucanase on the thermal (TGA), morphological (SEM), chemical (FT-IR) and mechanical (single yarn tensile tests) properties of flax yarns. The preparation based on pectinase and xyloglucanase provided the best results, resulting in the effective removal of hydrophilic components such as hemicellulose and pectin, the individualization of yarns and increased thermal stability at the expense of a reduction in mechanical properties, depending on the treatment parameters. Single yarn fragmentation tests pointed out an improved interfacial adhesion after enzymatic treatment, with reduced debonding length values of 18% for an epoxy matrix and up to 36% for a vinylester resin compared to untreated flax yarns.
Surface modification of flax yarns by enzymatic treatment and their interfacial adhesion with thermoset matrices / Seghini, M. C.; Tirillo, J.; Bracciale, M. P.; Touchard, F.; Chocinski-Arnault, L.; Zuorro, A.; Lavecchia, R.; Sarasini, F.. - In: APPLIED SCIENCES. - ISSN 2076-3417. - 10:8(2020). [10.3390/APP10082910]
Surface modification of flax yarns by enzymatic treatment and their interfacial adhesion with thermoset matrices
Seghini M. C.
;Tirillo J.;Bracciale M. P.;Zuorro A.;Lavecchia R.;Sarasini F.
2020
Abstract
The aim of this study was to assess the effects of commercially available and relatively inexpensive enzyme preparations based on endo 1,4-β-xylanase, pectinase and xyloglucanase on the thermal (TGA), morphological (SEM), chemical (FT-IR) and mechanical (single yarn tensile tests) properties of flax yarns. The preparation based on pectinase and xyloglucanase provided the best results, resulting in the effective removal of hydrophilic components such as hemicellulose and pectin, the individualization of yarns and increased thermal stability at the expense of a reduction in mechanical properties, depending on the treatment parameters. Single yarn fragmentation tests pointed out an improved interfacial adhesion after enzymatic treatment, with reduced debonding length values of 18% for an epoxy matrix and up to 36% for a vinylester resin compared to untreated flax yarns.File | Dimensione | Formato | |
---|---|---|---|
Seghini_Surface-modification-flax_2020.pdf
accesso aperto
Tipologia:
Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza:
Creative commons
Dimensione
6.39 MB
Formato
Adobe PDF
|
6.39 MB | Adobe PDF |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.