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聚己内酯、氧化锌和聚乙二醇对通过熔体静电纺丝获得的聚乳酸复合纤维性能的影响。

Effect of Polycaprolactone, Zinc Oxide, and Poly(ethylene glycol) on the Properties of Polylactic Acid Composite Fibers Obtained by Melt Electrospinning.

作者信息

Erdem Ferit, Kandemir Halil, Alp F Burcu

机构信息

Department of Chemical Engineering, Süleyman Demirel University, Isparta 32260, Turkey.

出版信息

ACS Omega. 2025 Jan 3;10(1):1457-1469. doi: 10.1021/acsomega.4c09181. eCollection 2025 Jan 14.

DOI:10.1021/acsomega.4c09181
PMID:39829549
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11740110/
Abstract

Polylactic acid (PLA) composite fibers were obtained using melt electrospinning, in which a high voltage was applied to the nozzle of the 3D printer. Filaments for melt electrospinning were prepared by using an extruder operated at 155 °C. PLA was mixed with polycaprolactone (PCL; 95:5, 90:10, and 85:15 by wt %), zinc oxide (ZnO; 0.1 phr), and poly(ethylene glycol) (PEG; 1 phr). The prepared filaments and fibers were characterized by Fourier-transform infrared spectroscopy (FTIR), contact angle measurements, thermal gravimetry (TGA), differential scanning calorimetry (DSC), and dynamic mechanical analysis (DMA). The measured contact angles of the filaments were in the range of 60.33° (±4.04) to 78° (±2.65), while the melt-electrospun fibers were in the range of 110.17° (±0.29) to 128.5° (±1.32). Melt electrospinning significantly increased the contact angle. According to the DSC analysis, the addition of 0.1% ZnO and 1% PEG increased the degree of crystallinity of PLA from 19.63 to 27.48% in the filaments and 11.54 to 20.79% in the fibers. The Avrami constant () values of the filaments and fibers were found in the range between 2.62-3.97 and 2.75-3.95, respectively. It was shown that the crystallization was controlled by nucleation. DMA analysis indicated that melt electrospinning and the addition of PCL decreased the storage modulus of the filaments, thereby increasing their plasticity.

摘要

聚乳酸（PLA）复合纤维通过熔体静电纺丝获得，其中向3D打印机的喷嘴施加高电压。用于熔体静电纺丝的长丝通过在155℃下操作的挤出机制备。将PLA与聚己内酯（PCL；重量比为95:5、90:10和85:15）、氧化锌（ZnO；0.1 phr）和聚乙二醇（PEG；1 phr）混合。通过傅里叶变换红外光谱（FTIR）、接触角测量、热重分析（TGA）、差示扫描量热法（DSC）和动态力学分析（DMA）对制备的长丝和纤维进行表征。测量的长丝接触角在60.33°（±4.04）至78°（±2.65）范围内，而熔体静电纺丝纤维的接触角在110.17°（±0.29）至128.5°（±1.32）范围内。熔体静电纺丝显著增加了接触角。根据DSC分析，添加0.1%的ZnO和1%的PEG使长丝中PLA的结晶度从19.63%提高到27.48%，纤维中从11.54%提高到20.79%。长丝和纤维的阿弗拉米常数（）值分别在2.62 - 3.97和2.75 - 3.95范围内。结果表明，结晶是由成核控制的。DMA分析表明，熔体静电纺丝和添加PCL降低了长丝的储能模量，从而提高了它们的可塑性。

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