PMID- 22881188 OWN - NLM STAT- MEDLINE DCOM- 20130118 LR - 20131121 IS - 1526-4602 (Electronic) IS - 1525-7797 (Linking) VI - 13 IP - 9 DP - 2012 Sep 10 TI - Significantly reinforced composite fibers electrospun from silk fibroin/carbon nanotube aqueous solutions. PG - 2859-67 LID - 10.1021/bm300877d [doi] AB - Microcomposite fibers of regenerated silk fibroin (RSF) and multiwalled carbon nanotubes (MWNTs) were successfully prepared by an electrospinning process from aqueous solutions. A quiescent blended solution and a three-dimensional Raman image of the composite fibers showed that functionalized MWNTs (F-MWNTs) were well dispersed in the solutions and the RSF fibers, respectively. Raman spectra and wide-angle X-ray diffraction (WAXD) patterns of RSF/F-MWNT electrospun fibers indicated that the composite fibers had higher beta-sheet content and crystallinity than the pure RSF electrospun fibers, respectively. The mechanical properties of the RSF electrospun fibers were improved drastically by incorporating F-MWNTs. Compared with the pure RSF electrospun fibers, the composite fibers with 1.0 wt % F-MWNTs exhibited a 2.8-fold increase in breaking strength, a 4.4-fold increase in Young's modulus, and a 2.1-fold increase in breaking energy. Cytotoxicity test preliminarily demonstrated that the electrospun fiber mats have good biocompatibility for tissue engineering scaffolds. FAU - Pan, Hui AU - Pan H AD - State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China. FAU - Zhang, Yaopeng AU - Zhang Y FAU - Hang, Yichun AU - Hang Y FAU - Shao, Huili AU - Shao H FAU - Hu, Xuechao AU - Hu X FAU - Xu, Yuemin AU - Xu Y FAU - Feng, Chao AU - Feng C LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120822 PL - United States TA - Biomacromolecules JT - Biomacromolecules JID - 100892849 RN - 0 (Biocompatible Materials) RN - 0 (Nanotubes, Carbon) RN - 0 (Solutions) RN - 059QF0KO0R (Water) RN - 9007-76-5 (Fibroins) SB - IM MH - Animals MH - Biocompatible Materials/*chemical synthesis/pharmacology MH - Bombyx/*chemistry MH - Cell Line MH - Cell Survival/drug effects MH - Dogs MH - Elastic Modulus MH - Electrochemical Techniques MH - Epithelial Cells/cytology/drug effects MH - Fibroblasts/cytology/drug effects MH - Fibroins/*chemistry MH - Mice MH - Molecular Structure MH - Nanotubes, Carbon/*chemistry MH - Solutions MH - Spectrum Analysis, Raman MH - Tensile Strength MH - Tissue Engineering MH - Tissue Scaffolds MH - Water MH - X-Ray Diffraction EDAT- 2012/08/14 06:00 MHDA- 2013/01/19 06:00 CRDT- 2012/08/14 06:00 PHST- 2012/08/14 06:00 [entrez] PHST- 2012/08/14 06:00 [pubmed] PHST- 2013/01/19 06:00 [medline] AID - 10.1021/bm300877d [doi] PST - ppublish SO - Biomacromolecules. 2012 Sep 10;13(9):2859-67. doi: 10.1021/bm300877d. Epub 2012 Aug 22.