基于同轴电纺丝技术的聚乳酸/聚乙二醇热调节纳米纤维的开发及内纺丝溶液浓度的探索

IF 2.2 4区 工程技术 Q1 MATERIALS SCIENCE, TEXTILES
Baoji Hu, Yike Peng, Yirui Chen, Jingyu Ma, Feiyang Xu, Yifan Zhang, Manan Zhai, Xu Wang, Weili Shao
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引用次数: 0

摘要

为了开发热调节纳米纤维,本研究以聚乙二醇(PEG)溶液和聚乳酸(PLA)溶液为内外纺丝液,采用同轴电纺工艺开发了PLA/PEG(PoPi)纳米纤维。通过 XRD、傅立叶变换红外光谱和水接触角分析,证实 PoPi 中的聚乳酸对 PEG 内层有一定的包裹作用,但包裹作用随 PEG 纺丝液浓度的增加而减弱。PEG20 的 PEG 纺丝溶液浓度为 20 wt%,获得的平均直径较小,而 PEG40 的 PEG 纺丝溶液浓度为 40 wt%,纤维的成型性和疏水性显著下降。PEG 能明显改善 PoPi 的机械性能,与纯聚乳酸相比,PEG30 的杨氏模量、屈服应力、断裂应力和断裂应变分别提高了 18.24 兆帕、2.13 兆帕、3.54 兆帕和 41.65%。PoPi 的 DSC 曲线显示出一个归因于 PEG 的熔化内热峰,峰值温度随 PEG 浓度的增加而逐渐降低。在加热和冷却过程中,PoPi 都表现出温度滞后现象,与纯聚乳酸相比,PEG30 在加热和冷却 5 秒后的温度延迟分别为 7.6 ℃ 和 6.8 ℃,表明其具有出色的热调节能力。这项工作研究了 PEG 纺丝溶液浓度对 PoPi 内外层差异和性能的影响,为开发基于低分子量 PEG 的热调节同轴电纺纳米纤维提供了理论依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Development of PLA/PEG Thermal Regulation Nanofibers Based on Coaxial Electrospinning and Exploration of Inner Spinning Solution Concentration

Development of PLA/PEG Thermal Regulation Nanofibers Based on Coaxial Electrospinning and Exploration of Inner Spinning Solution Concentration

To develop thermal regulation nanofibers, this work used polyethylene glycol (PEG) solution and polylactic acid (PLA) solution as the inner and outer spinning fluids and developed PLA/PEG (PoPi) nanofibers using coaxial electrospinning process. Through XRD, FTIR, and water contact angle analysis, it was confirmed that the PLA of PoPi has a certain encapsulation effect on the inner layer of PEG, but the encapsulation effect decreases with the increase of PEG spinning solution concentration. PEG20 with a PEG spinning solution concentration of 20 wt% obtained smaller average diameters, while PEG40 with a PEG spinning solution concentration of 40 wt% showed a significant decrease in fiber formability and hydrophobicity. PEG significantly improved the mechanical properties of PoPi, and the Young’s modulus, yield stress, breaking stress, and breaking strain of PEG30 were increased by 18.24 MPa, 2.13 MPa, 3.54 MPa, and 41.65%, respectively, compared to pure PLA. The DSC curves of PoPi show a melting endothermic peak attributed to PEG, and the peak temperature gradually decreases with increasing PEG concentration. The PoPi exhibits temperature hysteresis during both heating and cooling processes, with PEG30 experiencing delays of 7.6 °C and 6.8 °C compared to pure PLA after heating and cooling for 5 s, respectively, indicating excellent thermal regulation ability. This work investigated the effect of PEG spinning solution concentration on inner and outer layer differences and the performance of PoPi, providing a theoretical basis for the development of coaxial electrospinning nanofibers for thermal regulation based on low-molecular-weight PEG.

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来源期刊
Fibers and Polymers
Fibers and Polymers 工程技术-材料科学:纺织
CiteScore
3.90
自引率
8.00%
发文量
267
审稿时长
3.9 months
期刊介绍: -Chemistry of Fiber Materials, Polymer Reactions and Synthesis- Physical Properties of Fibers, Polymer Blends and Composites- Fiber Spinning and Textile Processing, Polymer Physics, Morphology- Colorants and Dyeing, Polymer Analysis and Characterization- Chemical Aftertreatment of Textiles, Polymer Processing and Rheology- Textile and Apparel Science, Functional Polymers
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