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Structural Characterization and Properties of Lyocell Fibers After Fibrillation and Enzymatic Defibrillation Finishing Treatments

机译:纤丝和酶除纤颤整理处理后的莱赛尔纤维的结构表征和性能

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摘要

The mechanical, structural, and dyeing properties of solvent-spun lyocell fibers in a plain weave fabric are studied before and after industrial treatments of mechanical fibrillation and enzymatic defibrillation. Stress-strain relationships, surface morphology, crystallinity, and dye uptake are assessed for each of the samples and compared. Both treatments significantly decrease the tensile failure properties of the yarns. There are no appreciable changes in the Young's modulus, nor are there significant differences in yarn linear density or fiber diameter. Fourier transform infrared spectroscopy and x-ray diffraction results identify the crystalline morphology of the lyocell fibers as cellulose Ⅱ. Spectroscopy results indicate that a small decrease in crystallinity takes place with industrial processing. The rate of decreased fiber crystallinity during ball milling is facilitated by the fibrillation and enzymatic treatments. Compared to the untreated fabric, both treated fabrics exhibit increased dye uptake rates, which appear to be greatest after fibrillation.
机译:在机械原纤化和酶促除纤颤的工业处理之前和之后,研究了平纹织物中溶剂纺制的莱赛尔纤维的机械,结构和染色性能。对每个样品评估应力-应变关系,表面形态,结晶度和染料吸收并进行比较。两种处理均显着降低了纱线的拉伸破坏性能。杨氏模量没有明显变化,纱线线密度或纤维直径也没有显着差异。傅里叶变换红外光谱和X射线衍射结果证实了莱赛尔纤维的结晶形态为纤维素Ⅱ。光谱结果表明,随着工业加工,结晶度略有下降。原纤化和酶处理有助于球磨过程中纤维结晶度降低的速率。与未处理的织物相比,两种处理的织物均显示出增加的染料吸收速率,这在原纤化后似乎最大。

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