Effects of Alkali Treatment and Strain Hardening on the Mechanical, Dye Uptake, and Structural Properties of Regenerated Cellulosic Yarns

Poongodi, G.R.; Sukumar, Nachiappan; Subramnaiam, V.; Radhalakshmi, Y. C.

doi:10.1080/15440478.2019.1612809

Cited by 8 publications

(4 citation statements)

References 16 publications

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“…As the alkali concentration increased, both the warp and weft crimp ratios and fabric densities increased in all weave types. Alkali pretreatment increased the volume of yarns in fabrics due to the increase in Lyocell fiber diameter and opened the twist that caused shrinkage (Poongodi et al, 2021). Due to this shrinkage, the warp and weft crimp ratios and fabric densities increased.…”

Section: Figure 3 the Crimp And Density Results Of Untreated And Alka...mentioning

confidence: 99%

“…The dense fibril appearance of untreated Lyocell fibres greatly reduced at an alkali concentration of 2 mol/L and the fibrillation was not occur in 5 and 7 mol/L NaOH concentrations due to lateral fiber swelling. The lateral fiber swelling also caused the shrinkage because of the increased volume and damaged twisted structure of yarns (Poongodi et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

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Influences of Alkali Pretreatment on Lyocell Woven Fabric Properties After Abrasion

ATICI,

KAYA

2023

Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi

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In this study, alkali pretreatment in various concentrations were applied to Lyocell woven fabrics to decrease the fibrillation tendency of fibers and the influences of alkali pretreatment on tensile and tearing properties of Lyocell fabrics after abrasion were investigated. Alkali pretreatment reduced fibrillation of Lyocell fibers. However, fabric shrinkage occurred because of the increased volume and damaged twisted structure of yarns due to the lateral fiber swelling. The warp/weft densities and crimp ratios increased as the alkali concentrations increased. The breaking and tearing loads of untreated Lyocell fabrics were higher than those of alkali pretreated fabrics since the strength loss caused by alkali pretreatment. The abrasive load caused fiber breakages and fiber entanglements on fabrics and decreased the both breaking and tearing loads. The weave types with long floating interlacements on the fabric surface were more severely damaged by exposing to abrasive load and resulted as higher strength reduction.

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Section: Figure 3 the Crimp And Density Results Of Untreated And Alka...mentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Influences of Alkali Pretreatment on Lyocell Woven Fabric Properties After Abrasion

ATICI,

KAYA

2023

Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi

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“…Poondodi, G. R et al treated regenerated cellulose bers by sodium hydroxide swelling method. The results showed that the dyeing performance of regenerated cellulose yarn was effectively improved after alkali treatment (Poongodi et al 2019). Gao et al pointed out that using NaOH/urea aqueous solution system to treat waste cotton fabric can change its morphology and reduce its crystallinity (Gao et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Enhancing digital ink-jet printing patterns quality through controlling the crystallinity of cotton fibers

Zhao

Wang²,

Fang

et al. 2021

Preprint

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Cotton fibers have a high crystallinity, which makes a large number of reactive hydroxyl groups blocked and therefore affects the ink-jet printing performance of reactive dyes on cotton fabrics. In this work, the alkali treatment was employed to adjust the structure of cotton fibers. The crystallinity of treated cotton fibers reduced from 73.9–58.5%, and the breaking strength did not decrease compared with original cotton fiber. Thus, the accessible reactive hydroxyl groups and the wettability were enhanced for treated cotton fibers, which promoted the penetration of inks into the fibers. The optimal K/S value of 23.47 was achieved for treated cotton fabrics which was higher than that of untreated cotton fabrics (17.15). Meanwhile, the printed fabrics displayed good washing fastness, rubbing fastness and glossiness. This work provides an effective way for improving the utilization of dye solution and producing high-quality cotton fabric digital printing products.

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“…19 It has been reported that the positive effect of mercerization on the reactive dyeing fabric. [20][21][22] However, dyeing and inkjet printing are two completely different processing methods. 23,24 Since digital inkjet printing is a non-contact production method, nanoscale droplets are sprayed from a nozzle onto the bres to form a colour image.…”

Section: Introductionmentioning

confidence: 99%

Insights into coloration enhancement of mercerized cotton fabric on reactive dye digital inkjet printing

et al. 2022

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Effects of Alkali Treatment and Strain Hardening on the Mechanical, Dye Uptake, and Structural Properties of Regenerated Cellulosic Yarns

Cited by 8 publications

References 16 publications

Influences of Alkali Pretreatment on Lyocell Woven Fabric Properties After Abrasion

Influences of Alkali Pretreatment on Lyocell Woven Fabric Properties After Abrasion

Enhancing digital ink-jet printing patterns quality through controlling the crystallinity of cotton fibers

Insights into coloration enhancement of mercerized cotton fabric on reactive dye digital inkjet printing

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