High-effective preparation of ultrafine poly-(L-lactide-co-epsilon-caprolactone-diOH) fibers containing silver nanoparticles

作者：Liu, Mengzhu; Song, Lihua; Wang, Yongpeng; Cheng, Zhiqiang; Li, Junfeng^*

来源：High Performance Polymers, 2014, 26(4): 483-487.

DOI：10.1177/0954008313520333

• Poly-(l-lactide-co--caprolactone-diOH) (PCLA)
• Ag nanoparticles
• electrospinning
• N
• N-dimethylformamide (DMF)
• UV irradiation
• nanofibers

A novel method utilizing combination of N, N-dimethylformamide (DMF) and ultraviolet (UV) irradiation to reduce silver (Ag+) ions in situ in ultrafine poly-(l-lactide-co--caprolactone-diOH) (PCLA) fibers was developed. Compared with traditional solvent reduction method, the new method exhibited much higher efficiency. UV-visible spectra indicated that the addition of UV irradiation could shorten the reaction time dramatically. Transmission electron microscope and x-ray photoelectron spectroscopy results demonstrated that the new method had produced a larger number of uniform Ag nanoparticles (AgNPs). After statistical analysis, their mean size was determined as 6.96 nm, which was smaller than that of traditional AgNPs. In addition, as a biodegradable polymer, PCLA was first used to carry AgNPs. It was found that PCLA can be a stabilizing agent of Ag+ ions. Therefore, the formation mechanism of AgNPs with larger number and smaller size can be determined.

• 出版日期2014-6
• 单位吉林大学; 吉林农业大学