Skip to Main content Skip to Navigation
Journal articles

About the influence of temperature and environmental relative humidity on the longitudinal and transverse mechanical properties of elementary alfa fibers

Abstract : Composites reinforced with plant-based fibers present a high potential for valorization in new industrial applications due to their good specific mechanical characteristics, renewability, and recyclability. In order to accelerate their wide industry adoption, it is critical to assess their behavior and durability in heat and humid environments. This article aims at investigating the effects of temperature and relative humidity (RH) on the longitudinal and transverse mechanical properties of the lignocellulosic fibers extracted from alfa plant (Stipa tenacissima L). For this purpose, tensile and nanoindentation tests were performed on elementary alfa fibers subjected to a thermal cycle of 200°C. The fibers were held at various periods of 15, 30, 60 and 120 min. The test results showed that the longitudinal and transverse Young's moduli are moderately affected by short thermal cycles having duration of 15–30 min. However, for longer thermal cycle (i.e., 2 hr), a degradation of 21% for the transverse modulus was recorded. This degradation doubled for the longitudinal modulus (43 vs. 21%). A similar trend was observed for the breaking strength. This study also showed that the RH strongly affects the mechanical performances of alfa fibers.
Document type :
Journal articles
Complete list of metadata

https://hal-normandie-univ.archives-ouvertes.fr/hal-03346006
Contributor : Alexandre Vivet Connect in order to contact the contributor
Submitted on : Thursday, September 16, 2021 - 9:23:52 AM
Last modification on : Thursday, June 23, 2022 - 3:29:17 AM

Identifiers

Citation

Mokhtar Khaldi, Mohamed Mokhtar Bouziane, Alexandre Vivet, Habiba Bougherara. About the influence of temperature and environmental relative humidity on the longitudinal and transverse mechanical properties of elementary alfa fibers. Journal of Applied Polymer Science, Wiley, 2020, 137 (34), pp.48992. ⟨10.1002/app.48992⟩. ⟨hal-03346006⟩

Share

Metrics

Record views

69