同轴静电纺丝制备聚乙二醇和聚左旋乳酸核壳纤维及其热管理性能分析

刘艳萍; 郑剑亮; 王旭; 石江; 曾文丽; 武跃文

doi:10.11777/j.issn1000-3304.2022.22168

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同轴静电纺丝制备聚乙二醇和聚左旋乳酸核壳纤维及其热管理性能分析

研究论文 | 更新时间：2024-10-08

- 同轴静电纺丝制备聚乙二醇和聚左旋乳酸核壳纤维及其热管理性能分析
- Preparation of Poly(ethylenve glycol) and Poly(L-lactic acid) Core-shell Fibers by Coaxial Electrospinning and Analysis of the Thermal Management Properties
- 高分子学报 2022年53卷第12期页码：1493-1503
- 作者机构：
  
  郑州大学力学与安全工程学院微纳成型技术国家级国际联合研究中心郑州 450001
- 作者简介：
  
  E-mail: 202012252014767@gs.zzu.edu.cn
- 基金信息：
  
  中国博士后科学基金面上资助(基金号 2021M691323);河南省高等学校重点科研项目(21A430043);河南省高等学校青年骨干教师培养计划(2020GGJS015)
- DOI：10.11777/j.issn1000-3304.2022.22168
  中图分类号：
- 纸质出版日期：2022-12-20，
  
  网络出版日期：2022-08-31，
  
  收稿日期：2022-05-05，
  
  录用日期：2022-06-14
- 稿件说明：
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刘艳萍,郑剑亮,王旭等.同轴静电纺丝制备聚乙二醇和聚左旋乳酸核壳纤维及其热管理性能分析[J].高分子学报,2022,53(12):1493-1503.

Liu Yan-ping,Zheng Jian-liang,Wang Xu,et al.Preparation of Poly(ethylenve glycol) and Poly(L-lactic acid) Core-shell Fibers by Coaxial Electrospinning and Analysis of the Thermal Management Properties[J].ACTA POLYMERICA SINICA,2022,53(12):1493-1503.
刘艳萍,郑剑亮,王旭等.同轴静电纺丝制备聚乙二醇和聚左旋乳酸核壳纤维及其热管理性能分析[J].高分子学报,2022,53(12):1493-1503. DOI： 10.11777/j.issn1000-3304.2022.22168.

Liu Yan-ping,Zheng Jian-liang,Wang Xu,et al.Preparation of Poly(ethylenve glycol) and Poly(L-lactic acid) Core-shell Fibers by Coaxial Electrospinning and Analysis of the Thermal Management Properties[J].ACTA POLYMERICA SINICA,2022,53(12):1493-1503. DOI： 10.11777/j.issn1000-3304.2022.22168.

摘要

采用可降解的高分子材料聚左旋乳酸(PLLA)对潜热性能优良的聚乙二醇(PEG)相变材料进行包覆，利用同轴静电纺丝手段制备了具有良好热管理性能的核壳纤维. 基于透射电子显微镜(TEM)证实了核壳结构，通过扫描电镜(SEM)、示差扫描量热仪(DSC)、热重分析(TGA)、升降温实验、广角X射线衍射(WAXD)和单轴拉伸等实验分析了相变材料的表面形貌、储热性能、热稳定性和力学性能，结果表明：PLLA/PEG同轴纤维的包覆性能良好，最大包覆率可达48.8 wt%，结晶度达到56.3%. 由于PEG固-液相转变以及PLLA玻璃化转变带来的热容变化的共同作用，该核壳结构的相变材料具有良好的热管理性能，为拓宽高分子基相变材料的应用领域提供了参考.

Abstract

The severe energy crisis has become a huge obstacle to the industrialization process and economic development. In addition to developing new energy

improving the utilization efficiency of existing energy is one of the effective means to solve energy problems. In order to solve the contradiction between serious waste and discontinuous supply of thermal energy

the management and storage technology of thermal energy have been developed rapidly in recent years. Based on the advantages of high latent heat

suitable phase transition temperature

and thermal stability

poly(ethylene glycol) (PEG) is one of the most widely used materials of solid-liquid phase change. However

the polymer-based PCM undergoes solid-liquid phase changes between crystalline and molten states during use

which is prone to leakage and failure. Coaxial electrospinning utilizes a polymer with high melting point to encapsulate phase change material (PCM) as a core layer

which is an effective means to reduce the leakage of PCM. Biodegradable poly(L-lactic acid) (PLLA) is an environment-friendly material with excellent mechanical properties

which becomes an alternative to petroleum-based polymers. The glass transition temperature of PLLA is close to the melting point of PEG Although there is no obvious latent heat during the glass transition of PLLA

the thermal conductivity of PCM might be influenced by the change of heat capacity. Therefore

the thermal property of PCM can be regulated by coupling of heat latent of phase regulation and glass transition. More importantly

both PLLA and PEG have good biocompatibility

which may broaden the application in the field of biomedical application. In this study

core-shell fibers with good thermal management properties were prepared by coaxial electrospinning

in which PEG and PLLA are used as the core and shell layers

respectively. The core-shell structure is tested by transmission electron microscopy (TEM)

and analyzed by differential scanning calorimetry (DSC)

thermogravimetric analysis (TGA)

wide-angle X-ray diffraction (WAXD). The thermal storage properties

thermal stability and mechanical properties of phase change materials are investigated. The core layer of PEG is well coated by PLLA and the maximum coating ratio reaches 48.8 wt%. The biggest crystallinity of PEG reaches 56.3%. Due to the latent heat capacity of solid-liquid phase transition of PEG and the change of thermal capacity of PLLA

the phase change material with the core-shell structure has good thermal management performance

which provides an opportunity for broadening the application field of polymer-based phase change materials.

关键词

同轴静电纺丝相变材料热管理性能保温效率

Keywords

Coaxial electrospinningPhase change materialThermal management performanceThermal insulation efficiency

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