2024-03-28T17:16:58Zhttp://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/409802021-06-24T07:46:01Zcom_10324_31661com_10324_952com_10324_894com_10324_1158com_10324_931col_10324_31662col_10324_1242
Ventura, Heura
Claramunt, Josep
Navarro, Antonio
Rodríguez Pérez, Miguel Ángel
Ardanuy, Mònica
2020-06-02T13:31:58Z
2020-06-02T13:31:58Z
2016
Materials, 2016, vol. 9, n. 2. 18 p.
1996-1944
http://uvadoc.uva.es/handle/10324/40980
10.3390/ma9020093
Producción Científica
This research analyzes the effects of different treatments on flax nonwoven (NW) fabrics which are intended for composite reinforcement. The treatments applied were of two different kinds: a wet/dry cycling which helps to stabilize the cellulosic fibers against humidity changes and plasma treatments with air, argon and ethylene gases considering different conditions and combinations, which produce variation on the chemical surface composition of the NWs. The resulting changes in the chemical surface composition, wetting properties, thermal stability and mechanical properties were determined. Variations in surface morphology could be observed by scanning electron microscopy (SEM). The results of the X-ray photoelectron spectroscopy (XPS) showed significant changes to the surface chemistry for the samples treated with argon or air (with more content on polar groups on the surface) and ethylene plasma (with less content of polar groups). Although only slight differences were found in moisture regain and water retention values (WRV), significant changes were found on the contact angle values, thus revealing hydrophilicity for the air-treated and argon-treated samples and hydrophobicity for the ethylene-treated ones. Moreover, for some of the treatments the mechanical testing revealed an increase of the NW breaking force.
Ministerio de Educación y Formación Profesional (grants BIA2014-59399-R and FPU12/05869)
application/pdf
eng
MDPI
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2016 MDPI
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Cellulose fibers
Fibras de celulosa
Surface functionalization
Funcionalización de superficies
Effects of wet/dry-cycling and plasma treatments on the properties of flax nonwovens intended for composite reinforcing
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
https://www.mdpi.com/1996-1944/9/2/93
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