Surface Modification of Flax Yarns by Enzymatic Treatment and Their Interfacial Adhesion with Thermoset Matrices

Applied Sciences

MariaPaola Bracciale¹  Jacopo Tirillò¹  Antonio Zuorro¹  Roberto Lavecchia¹  Fabrizio Sarasini¹  MariaCarolina Seghini¹  Fabienne Touchard²  Laurence Chocinski-Arnault² 

[1] Department of Chemical Engineering Materials Environment, Sapienza-Università di Roma, 00184 Roma, Italy;Département Physique et Mécanique des Matériaux, ENSMA, Institut PPRIME, CNRS-ENSMA-Université de Poitiers, 86961 Futuroscope CEDEX, France;

关键词: flax fibres;    enzymatic treatment;    natural fibres;    interface/interphase;    surface modification treatments;   

DOI  :  10.3390/app10082910

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown