Effects on ultrafine fibers with electrospun bead jet method based on 3-arm PLA

• Published in: Materials letters Vol. 261; p. 127137
• Main Authors: Shen, Wen, Ao, Fen, Wang, Lan, Ge, Xuemei, Ren, Huijun, Fan, Guodong, Ning, Yuanlan
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.02.2020; Elsevier BV
• Subjects: Bacteria; Barrier bacteria; Biomaterials; Electrospinning; Fibers; Materials science; Mats; Microspheres; Polylatic acid; Porosity; Ultrafine fibers; Ultrafines; Wound healing; Electrospinning; Barrier bacteria; Polylatic acid; Ultrafine fibers; Biomaterials
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2019.127137

•3-arm PLA was prepared to ultrafine fibers via electrospun beads jet method.•Controlling the curing degree of microspheres affected the formation of ultrafine fibers.•3-arm PLA ultrafine fibers can effectively block bacteria. Polylatic acid (PLA) electrospun fiber mats have demonstrated their wide applications in the wound dressing and filtration. However, the size of the fiber diameter affects the porosity, which has been restricting its development. Here, a method of preparing ultrafine fiber mat was established by the 3-arm PLA electrostatic spray microspheres, and the 3-arm PLA ultrafine fibers were prepared with a fiber diameter of 40–100 nm which could be used as an effective bio-material for blocking bacteria. By analyzing the ultrafine formation mechanism of the 3-arm PLA fibers, it is found that controlling the curing degree of microspheres may play a main role in the formation of ultrafine fibers. This work has potential applications in the wound dressings and barriers to bacteria.