CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
Nanoconfined crystallites toughen artificial silk
Pan, H; Zhang, YP; Shao, HL; Hu, XC; Li, XH; Tian, F; Wang, J;
AbstractSpider dragline silk is of great interest to people for its outstanding mechanical properties including high toughness. Biomimetic spinning of spider silk has attracted people's attention for decades. This paper reports a simple and cheap method to greatly toughen artificial silk by compositing with nanoanatase. The toughness of the artificial silk (breaking energy 93.1 +/- 27.1 MJ m(-3)) exceeded that of silkworm silks. The hydrophilic nanomineral TiO2 with large specific surface area interacted severely with the fibroin matrix through coordination complexes (Ti-protein) and hydrogen bonds (O-H). Due to the interfacial interactions, regenerated silk fibroin (RSF)-TiO2 fibers showed higher alpha-helix/random coil content, lower beta-sheet content, smaller crystallites and lower crystallinity than pure RSF fibers. A nanoconfined crystallite toughening mechanism was proposed to discuss the structure-property relationship of the hybrid fibers.
KeywordX-ray-scattering Spider Silk Synchrotron-radiation Pla Nanocomposites Aqueous-solutions Titanium-dioxide Fibers Fibroin Transition Protein
Indexed BySCI
WOS IDWOS:000332199900014
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GB/T 7714
Pan, H,Zhang, YP,Shao, HL,et al. Nanoconfined crystallites toughen artificial silk[J]. JOURNAL OF MATERIALS CHEMISTRY B,2014,2(10):1408—1414.
APA Pan, H.,Zhang, YP.,Shao, HL.,Hu, XC.,Li, XH.,...& crystallites toughen artificial silk.JOURNAL OF MATERIALS CHEMISTRY B,2(10),1408—1414.
MLA Pan, H,et al."Nanoconfined crystallites toughen artificial silk".JOURNAL OF MATERIALS CHEMISTRY B 2.10(2014):1408—1414.
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