凝胶法制备表面形貌可控的聚氨酯-尿素纤维

Macromol Pub Date : 2023-10-21 DOI:10.3390/macromol3040042
Yutaka Ohsedo, Honoka Murata
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引用次数: 0

摘要

众所周知,构成服装的聚合物纤维与皮肤之间的相互作用可引起皮肤刺激,导致皮肤炎症和不利的皮肤反应。因此,人们一直在为改善这一现象作出重大努力。这项研究工程合成纤维减少潜在的皮肤刺激。这是通过丝绸纤维固有的光滑性来实现的,丝绸纤维对皮肤的摩擦和刺激最小。本文主要研究了聚氨酯纤维,这是一种经常用于纺织的合成纤维。研究了水凝胶交联聚氨酯-尿素纤维在不同亲水性混合溶剂环境下的可控溶胀。随后的冷冻干燥程序用于生产具有不同表面形态和包含特征(如高程和折痕)的纤维。通过偏振光和扫描电子显微镜严格评估了所用溶剂混合物的成分与纤维表面形貌之间的相关性。此外,还综合分析了膨胀度与纤维抗拉强度之间的相互作用。因此,膨胀和冷冻干燥相结合的方法赋予聚氨酯-尿素纤维不同的表面轮廓。未来的研究将深入研究纤维表面特性及其诱导皮肤刺激的可能性之间的复杂联系。据设想,这样的研究将大大有助于改进纺织纤维的设计,以增强与皮肤的相容性。
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Preparation of Polyurethane–Urea Fibers with Controlled Surface Morphology via Gel State
It is widely known that skin irritation can be induced by interactions between polymer fibers constituting clothing and the skin, leading to skin inflammation and unfavorable dermatological reactions. Thus, significant endeavors have been directed toward ameliorating this phenomenon. This study engineered synthetic fibers with reduced potential for skin irritation. This was achieved via a strategy inspired by the inherent smoothness of silk fibers, which exhibit minimal friction and irritation against the skin. This investigation focused on urethane fibers, a class of synthetic fibers frequently used in textile applications. Hydrogel cross-linked polyurethane–urea fibers were subjected to controlled swelling in different hydrophilic mixed-solvent environments. Subsequent freeze-drying procedures were employed to yield fibers with diverse surface morphologies and encompassing features such as elevations and creases. The correlation between the compositions of the solvent mixtures used and the resulting surface morphologies of the fibers was rigorously assessed through polarized light and scanning electron microscopies. Additionally, the interplay between the degree of swelling and the tensile strength of the fabricated fibers was comprehensively analyzed. Consequently, the methodological combination of swelling and freeze-drying endowed the polyurethane–urea fibers with various surface profiles. Future studies will delve into the intricate connection between fiber surface characteristics and their potential to induce skin irritation. It is envisaged that such investigations will substantially contribute to the refinement of textile fibers designed for enhanced compatibility with the skin.
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