热调控用同轴电纺PLA/PEG复合纳米纤维的制备与性能
Fabrication and properties of coaxial electrospun PLA/PEG composite nanofibers for thermal regulation
胡宝继 1陈艺蕊 2王旭 1彭伊珂 2徐飞扬 2张一帆 2刘佳敏 2张巧玲1
作者信息
- 1. 河南工程学院 服装学院,郑州 451191;河南工程学院 中原服饰文化与产品创新设计研究中心,郑州 451191
- 2. 河南工程学院 服装学院,郑州 451191
- 折叠
摘要
为探讨纺丝溶剂对同轴电纺纳米纤维的影响,并制备热调控用纳米纤维,分别以聚乙二醇(PEG)和聚乳酸(PLA)溶液为内、外层纺丝液,利用同轴电纺制备了PLA/PEG复合纳米纤维(NfC-S).通过调整内层纺丝溶剂制备了 3种NfC-S,分别为以去离子水为内层溶剂的NfC-S(PPw)、以四氢呋喃(THF)为内层溶剂的NfC-S(PPt)和以碳酸二甲酯(DMC)/N,N-二甲基甲酰胺(DMF)为内层溶剂的NfC-S(PPd).对NfC-S的形貌、化学结构、结晶性能、力学性能、热性能和亲水性进行了研究,并考察了NfC-S的热调控功能.结果显示:PPw获得两种尺度的纤维,平均直径相比PPd增加 190 nm.PPw获得较大的弹性模量和断裂应力,断裂应力相比PPt增加 0.54 MPa,而PPd和PPt获得较大的断裂应变.NfC-S具备归因于PEG的熔融吸热能力,其中PPt和PPw在升、降温过程中具有较大的温度滞后性,显示较强的热调控能力.NfC-S的疏水性相比纯PLA(PP0)较小,PPw的水接触角(136.5°)最接近PP0.总之,通过探讨内层纺丝溶剂对NfC-S性能的影响,开发了热调控用NfC-S,其中PPw的综合性能较优秀,为热调控用纳米纤维的可控制备提供参考.
Abstract
To investigate the effect of spinning solvents on coaxial electrospun nanofibers and prepare thermal regulation nanofibers,polyethylene glycol(PEG)and polylactic acid(PLA)solutions were used as inner and outer layer spinning solutions respectively,and PLA/PEG nanofibers(NfC-S)were prepared by coaxial electrospinning.Three types of NfC-S were prepared using deionized water,tetrahydrofuran(THF),and dimethyl carbonate(DMC)/N,N-dimethylformamide(DMF)as inner solvents,named PPw,PPt,and PPd,respectively.The morphology,chemical structure,crystalline properties,mechanical properties,thermal properties,and hydrophilicity of NfC-S were studied,and the thermal regulation function was further investigated.The results showed that PPw obtained fibers with two different scales,and the average diameter increased by 190 nm compared to PPd.PPw exhibited high-er elastic modulus and breaking stress,while PPd and PPt showed higher breaking strain,with the breaking stress of PPw increasing by 0.54 MPa compared to PPt.NfC-S possessed the melting endothermic capacity attributed to PEG,with PPt and PPw exhibiting significant temperature hysteresis during heating and cooling processes,demonstrat-ing excellent thermal regulation capability.The hydrophobicity of NfC-S was lower compared to pure PLA(PP0),with the water contact angle of PPw(136.5°)being closest to PP0.In conclusion,thermal regulation NfC-S was developed based on the research for inner layer solvent,with PPw showing superior comprehensive performance,providing a reference for the controllable preparation of thermal regulation nanofibers.
关键词
同轴电纺/相变材料/热调控/温度滞后性/聚乳酸/聚乙二醇Key words
coaxial electrospinning/phase change material/thermal regulation/temperature hysteresis/poly-lactic acid/polyethylene glycol引用本文复制引用
出版年
2024
NETL
NSTL
万方数据