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  • Title: Carbon nanotube-incorporated multilayered cellulose acetate nanofibers for tissue engineering applications.
    Author: Luo Y, Wang S, Shen M, Qi R, Fang Y, Guo R, Cai H, Cao X, Tomás H, Zhu M, Shi X.
    Journal: Carbohydr Polym; 2013 Jan 02; 91(1):419-27. PubMed ID: 23044152.
    Abstract:
    We report the fabrication of a novel carbon nanotube-containing nanofibrous polysaccharide scaffolding material via the combination of electrospinning and layer-by-layer (LbL) self-assembly techniques for tissue engineering applications. In this approach, electrospun cellulose acetate (CA) nanofibers were assembled with positively charged chitosan (CS) and negatively charged multiwalled carbon nanotubes (MWCNTs) or sodium alginate (ALG) via a LbL technique. We show that the 3-dimensional fibrous structures of the CA nanofibers do not appreciably change after the multilayered assembly process except that the surface of the fibers became much rougher than that before assembly. The incorporation of MWCNTs in the multilayered CA fibrous scaffolds tends to endow the fibers with improved mechanical property and promote fibroblast attachment, spreading, and proliferation when compared with CS/ALG multilayer-assembled fibrous scaffolds. The approach to engineering the nanofiber surfaces via LbL assembly likely provides many opportunities for new scaffolding materials design in various tissue engineering applications.
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