Characterization of a novel natural cellulosic fiber from Juncus effusus L.

Abstract

This study aims to assess the morphology and properties of fibers extracted from a wild natural plant largely available in Algeria known as Juncus effusus L. (JE). The morphology and diameter of the fiber bundles extracted from the stem of the JE plant were characterized by optical and scanning electron microscopy. The functional groups of the extracted lignocellulosic JE fibers were studied by FTIR, their thermal degradation behavior was investigated by TGA and their crystallinity was determined using X-ray diffraction technique. In addition, mechanical characterization was carried out using tensile tests on the lignocellulosic fiber in order to evaluate their strength, strain at break and Young's modulus. In view of the dispersion in the obtained experimental results, the latter were analyzed using the Weibull statistical laws with two and three parameters.

Preparation of ZIF‐8/natural Plant Fiber Composites via Biomimetic Mineralization for Highly Efficient Removal of Formaldehyde

“…The double peak observed at 2861 and 2918 cm –1 is attributed to the CH stretching vibration from CH and CH 2 in cellulose and hemicellulose, respectively. The peak at 3318 cm –1 belongs to OH stretching . The FT‐IR spectra of the H‐JE fibers treated with ZIF‐8 or ZIF‐8‐BSA exhibit distinct peaks compared to the nontreated H‐JE fibers.…”

“…The magnified images of the P‐JE fibers in Figures. 3d–f show the presence of impurities (primarily lignin, but also wax), which is typical for untreated fibers . These impurities reveal the hydrophobic properties of P‐JE fibers, and highlight that P‐JE fibers are not conducive to the synthesis of effective ZIF‐8 composites.…”

“…The deposition of powdered ZIF‐8 nanocrystals onto other substrates is essential to avoid inconvenience during its practical applications, highlighting an important research direction of these MOF adsorption materials . Juncus effusus fibers (JE fibers) are natural, soft, and porous materials with a slender cylindrical shape (2‐3 mm diameter and up to 120 cm in length) . The chemical composition of JE contains a variety of polymers, including methyl pentosan, araban, xylan, and luteolin.…”

“…[10,11] Juncus effusus fibers (JE fibers) are natural, soft, and porous materials with a slender cylindrical shape (2-3 mm diameter and up to 120 cm in length). [12][13][14] The chemical composition of JE contains a variety of polymers, including methyl pentosan, araban, xylan, and luteolin. JE is rich in flora fibers and functional groups, such as carboxyl and hydroxy groups, which make the adsorption process possible.…”

Caracterización térmica, mecánica y morfológica de fibras naturales colombianas con potencial como refuerzo de biocompuestos

“…La gran diferencia entre en el espesor de la pared celular y el lumen afectó de manera negativa las propiedades mecáni-cas, y significó que ocupara el cuarto lugar con respecto a la resistencia máxima entre las fibras analizadas. Las imágenes obtenidas mediante microscopia electrónica de barrido (SEM) evidenciaron características morfológicas similares entre las fibras colombianas analizadas en el presente estudio y otras reportadas en la literatura, como las de yute, sisal, curauá, coco y piassava (Alves, et al, 2013), okra (Abelmoschus esculentus) (DeRosa, et al, 2011), melcocha (Althaea officinalis L) (Sarikanat, et al, 2014), fibras de cáscara de nuez de betel (Areca catechu) (Yusriah, et al, 2014), fibra cabecinegro (Manicaria saccifera) (Porras, et al, 2016), de alcachofa (Cynara cardunculus L.) (Fiore et al, 2011), Juncus effusus L. (Maache, et al, 2017) y fibra de caña de azúcar (Hossain, et al, 2014). El análisis dela morfología, de las cinco fibras evidenció que la de guérregue y la de caña flecha presentaron paredes celulares más gruesas y lúmenes muy pequeños, lo cual incrementa el área de soporte para una óptima distribución de la carga sobre las microfibrillas de celulosa en la pared secundaria, lo cual les permite un mejor comportamiento mecánico.…”