由人体温度引发的形状记忆聚氨酯丝的制备与性能

IF 2.2 4区 工程技术 Q1 MATERIALS SCIENCE, TEXTILES
Ailan Wan, Xiaoxiao Wang, Deng Zeng, Qian Qi
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引用次数: 0

摘要

为了利用人体热量触发形状记忆智能纺织品,研究人员以改性聚己内酯二元醇(PCL)为基础,通过干法纺丝制备了具有三种不同过渡温度的形状记忆聚氨酯长丝(SMPUF)。对其化学结构进行了系统表征。对其形状记忆性能、拉伸性能、回弹性和粘弹性进行了全面研究。结果表明,相变温度接近人体温度,分别为 19.97°C、27.33°C 和 30.37°C。此外,样品中的氢键比聚氨酯丝(PUF)少约 30%。过渡温度为 30.37°C 的样品的最佳形状固定率为 88.5%,形状恢复率为 96.7%。55°C 时的弹性恢复比 22°C 时高 45.2%。随着温度的升高,SMPUF 的弹性模量下降,直至达到 PUF 的弹性模量。SMPUF 的静态和动态粘弹性表明,软段的相变会影响分子链的运动。SMPUF 可用作压缩服装和可穿戴矫形设备,如本研究中制备的弹力带。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Preparation and properties of shape memory polyurethane filaments triggered by human body temperature
To utilize the human body heat to trigger the shape memory smart textiles, shape memory polyurethane filaments (SMPUF) with three different transition temperatures were prepared based on modified polycaprolactone diol (PCL) by dry spinning. The chemical structure was characterized systemically. The shape memory properties, tensile properties, resilience, and viscoelasticity were studied comprehensively. The results revealed that the phase transition temperatures were close to human body temperature which measured 19.97°C, 27.33°C, and 30.37°C, respectively. Additionally, the fraction of hydrogen bonds in the samples was about 30% less than that of polyurethane filaments (PUF). The best shape fixity ratio was 88.5% and the shape recovery ratio was 96.7% belonging to samples with a transition temperature of 30.37°C. At 55°C, the elastic recovery was 45.2% higher than that at 22°C. As the temperature rose, the elastic modulus of SMPUF decreased until it reached that of PUF. The static and dynamic viscoelasticity of SMPUF indicated that the phase transition of the soft segment affects the movement of the molecular chain. SMPUF can be used as compression garments, and wearable orthopedic devices, such as the elastic bands prepared in this work.
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来源期刊
Journal of Industrial Textiles
Journal of Industrial Textiles MATERIALS SCIENCE, TEXTILES-
CiteScore
5.30
自引率
18.80%
发文量
165
审稿时长
2.3 months
期刊介绍: The Journal of Industrial Textiles is the only peer reviewed journal devoted exclusively to technology, processing, methodology, modelling and applications in technical textiles, nonwovens, coated and laminated fabrics, textile composites and nanofibers.
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