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Conjugate electrospinning of continuous nanofiber yarn of poly(L‐lactide)/nanotricalcium phosphate nanocomposite
Authors:Xinsong Li  Chen Yao  Fuqian Sun  Tangying Song  Yunhui Li  Yuepu Pu
Affiliation:1. Biomaterials and Drug Delivery Laboratories, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210018, People's Republic of China;2. School of Public Health, Southeast University, Nanjing 210018, People's Republic of China
Abstract:The continuous nanofiber yarns of poly(L ‐lactide) (PLLA)/nano‐β‐tricalcium phosphate (n‐TCP) composite are prepared from oppositely charged electrospun nanofibers by conjugate electrospinning with coupled spinnerets. The morphology and mechanical properties of PLLA/n‐TCP nanofiber yarns are characterized by scanning electron microscope, transmission electron microscope, and electronic fiber strength tester. The results show that PLLA/n‐TCP nanofibers are aligned well along the longitudinal axis of the yarn, and the concentration of PLLA plays a significant role on the diameter of the nanofibers. The thicker yarn of PLLA/n‐TCP composite with the weight ratio of 10/1 has been produced by multiple conjugate electrospinning using three pairs of spinnerets, and the yarn has tensile strength of 0.31cN/dtex. A preliminary study of cell biocompatibility suggests that PLLA/n‐TCP nanofiber yarns may be useable scaffold materials. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2008
Keywords:conjugate electrospinning  fibers  yarn  nanocomposite  strength
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