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首页> 外文期刊>Journal of natural fibers >Effects of Alkali Treatment and Strain Hardening on the Mechanical, Dye Uptake, and Structural Properties of Regenerated Cellulosic Yarns
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Effects of Alkali Treatment and Strain Hardening on the Mechanical, Dye Uptake, and Structural Properties of Regenerated Cellulosic Yarns

机译：碱处理和应变硬化对再生纤维素纱线机械，染料吸收的影响及结构性能

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摘要

Mercerization is an important process applied to cellulosic fibers for improving the properties like dimensional stability, luster, and dye uptake. Strain hardening is a technology for strengthening materials by realigning of atoms in crystal lattice and is generally used in metallurgy and is being tried on yarns. In the present study, four types of regenerated cellulose fiber namely lyocell, modal bamboo, and viscose were subjected to swelling by alkali (4% NaOH) treatment and Strain hardening by stretching device with the objective of studying mechanical properties, structural properties, and dye uptake properties. It is observed that tenacity was lowered below that of corresponding controls due to alkali treatment in case of all the four yarns. The strain hardening immediately after the alkali treatment enhanced strength of Bamboo and Modal upto 125% and 105% of the corresponding control yarns, whereas it was only 98% and 85% strength of corresponding untreated yarns in the case of Lyocell and Viscose. The minimum twist of cohesion values of alkali treated - strain hardened yarns were lesser than that of control and this is indicative of increase in inter fiber cohesion. Interestingly there was a tremendous improvement in dye uptake property of all four regenerated cellulosic yarns. This paper reports the impact of alkali treatment followed by stretching on essential properties of regenerated cellulosic yarns.
机译：丝光晶是应用于纤维素纤维的重要过程，用于改善尺寸稳定性，光泽和染料摄取等性质。应变硬化是通过在晶格中的原子重新调节原料来加强材料的技术，并且通常用于冶金，并在纱线上尝试。在本研究中，通过碱（4％NaOH）处理和应变硬化，通过拉伸机械性能，结构性能和染料，进行四种类型的再生纤维素纤维即Lyocell，型竹子和粘胶溶胶。通过研究机械性能，结构性和染料，对碱（4％NaOH）处理和菌株硬化进行溶胀摄取物业。观察到，由于所有四个纱线的碱处理，相应对照的韧度降低了相应的对照。在碱处理后立即强化竹子和模态的强度高达125％和105％的相应控制纱线，而在Lyocell和粘胶的情况下，相应的未处理纱线仅为98％和85％的强度。碱处理 - 菌株硬化纱线的内聚力值的最小扭曲比对照的更小，并且这表明纤维间凝聚的增加。有趣的是，所有四种再生纤维素纱线的染料摄取性质都有巨大改善。本文报道了碱处理的影响，然后在再生纤维素纱线的基本性质上拉伸。

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