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首页> 外文期刊>Textile Research Journal >Effect of Cellulose Pulp Type on the Mercerizing Behavior and Physical Properties of Lyocell Fibers
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Effect of Cellulose Pulp Type on the Mercerizing Behavior and Physical Properties of Lyocell Fibers

机译：纤维素纸浆类型对莱赛尔纤维丝光行为和物理性能的影响

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摘要

Various crimped lyocell fibers are spun from isotropic dopes of cellulose solutions in N-methyl morpholine N-oxide (NMMO) monohydrate with different compositions of hardwood and softwood pulp (IPS lyocell fibers). The physical properties of IPS lyocell fibers treated with NaOH aqueous solutions are compared with those of commercially available Tencel lyocell fibers, which are obtained by anisotropic phase spinning. WAXD reveals that pulp composition has little effect on crystalline structure, and IPS lyocell fibers yield a crystalline structure almost the same as that of Tencel fibers (cellulose Ⅱ structure). Alkali treatments affect physico-mechanical properties such as compaction and tensile properties. Mercerization with 10 wt% NaOH solution causes the largest weight loss and the highest degree of swelling. Lyocell fibers show a notable decrease in tensile strength when treated with strong alkali solutions higher than 7.5 wt%. In addition, IPS lyocell fibers with more softwood content display less reduction in tensile properties after strong alkali treatments.
机译：各种卷曲的莱赛尔纤维是从纤维素溶液的各向同性浓液中纺出的，这些溶液是由N-甲基吗啉N-氧化物（NMMO）一水合物组成的，具有不同的硬木和软木浆成分（IPS莱赛尔纤维）。将经NaOH水溶液处理的IPS莱赛尔纤维的物理性能与通过各向异性相纺丝获得的市售Tencel莱赛尔纤维的物理性能进行了比较。 WAXD表明纸浆组成对晶体结构几乎没有影响，并且IPS莱赛尔纤维产生的晶体结构与Tencel纤维几乎相同（纤维素Ⅱ结构）。碱处理会影响物理机械性能，例如压实和拉伸性能。用10 wt％NaOH溶液进行丝光处理会导致最大的重量损失和最高的溶胀度。当用高于7.5 wt％的强碱溶液处理时，莱赛尔纤维显示出明显的拉伸强度下降。另外，具有更多针叶木含量的IPS莱赛尔纤维在强碱处理后，其拉伸性能下降较少。

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