New Brazilian pineapple leaf fibers for textile application: cottonization and dyeing performance

Abstract

This work evaluates the dyeing performance associated with a cottonization and bleaching pretreatment of pineapple leaf fibers from two different species from Brazil: curaua (A. lucidus syn. A. erectifolius) and red pineapple (A. bracteatus (Lindl.) Schult. & Schult.f ), aiming its application in textile materials for garments. Treated and untreated fibers were compared for their morphological, chemical, physical and color properties. The fibers underwent changes in their chemical and physical structural characteristics after pretreatment. The results of SEM, FTIR and whiteness index analysis indicated that the cottonization process improved the color and surface uniformity of fibers, reducing non-cellulosic matters, such as lignin and pectin. Treated fibers also presented low impurities content, i.e., oils, wax and fats (between 1.1 and 2.1%). However, compared to untreated fibers, treated curaua show an increase in impurities, supposedly caused by the removal of epidermal tissue from the fiber surface, which became the fiber bundle structure more accessible. Cottonization process also produced thinner, individualized and more resistant fiber bundles, which was evidenced by a decrease in linear density by 30 and 42% and an increase in tenacity by 12 and 23%. The dyeing behavior of fibers was investigated using blue, red and yellow reactive dyes. Fibers of both species demonstrated good dyeing behavior, with K/S values compatible with textile application standards (between 4 and 11) and an excellent color fastness to laundering.

Physico-chemical and mechanical characterization of bambusa vulgaris fibers from Cameroon

“…Similar results have been observed for Typha or pineapple leaf fibers. 26,38 However, for bamboo treated fibers, we obtain linear density values ​​slightly low 39 which is justified by the effect of the treatment on bamboo treated fibers.…”

“…24 The linear density was measured in each of the sampling 22,23 zones and was calculated using equation (1) which was applied for Mesocarp oil palm and pineapple leaves fibers. 25,26…”

Studies on interfacial shear strength of pineapple leaf fibre from agro-waste reinforced polypropylene composites: Influence of fibre length and carding parameters

“…43 The pick at around 2915 cm À1 specifies the C-H stretching of cellulose and saturated alkane of wax. 5,44 Another study shows that the sharp band at 2915 cm À1 is caused by the C-H stretching of methyl and methylene groups in cellulose and hemicellulose. 45 With an increase in carding passages, it was found that the peaks observed in the range of 3100 to 3800 cm À1 , caused by the OH stretching vibration of intra-and intermolecular H-bonding in cellulose, hemicellulose, and lignin molecules, decreased noticeably due to the removal of extraneous substances from PALF.…”

Extraction and characterization of curcuma zedoaria pseudo-stems fibers for textile application

“…Throughout its history, the textile industry has been a major contributor to large-scale resource consumption. This is not only because textiles are among the most vital products, but also to the wide range of applications available, such as technical textiles (de Queiroz et al , 2020). Along with the increase of application types, increased demographic and socio – economic expansion results in an increasing discrepancy between fiber availability and demand, a concept is known as the fiber gap (Scheffer, 2012).…”

“…Natural fibers have become much more apparent as an alternate to synthetic fibers, not just for textiles but also for a diverse variety of other applications (de Queiroz et al , 2020). Natural fibers are biodegradable, as contrast to man made fibers, which are frequently employed in the textile industry (Kozlowski and Mackiewicz-Talarczyk, 2020).…”