Strong composite films with layered structures prepared by casting silk fibroin–graphene oxide hydrogels

Nanoscale ◽  
2013 ◽  
Vol 5 (9) ◽  
pp. 3780 ◽  
Author(s):  
Liang Huang ◽  
Chun Li ◽  
Wenjing Yuan ◽  
Gaoquan Shi
Keyword(s):  
Graphene Oxide ◽  
Silk Fibroin ◽  
Composite Films ◽  
Layered Structures

scholarly journals The Fabrication of Cassava Silk Fibroin-Based Composite Film with Graphene Oxide and Chitosan Quaternary Ammonium Salt as a Biodegradable Membrane Material

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Shuqiang Zhao ◽  
Pibo Ma ◽  
Ailan Wan ◽  
Jiwei Huang ◽  
Houyong Yu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Composite Film ◽  
Silk Fibroin ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Breaking Strength ◽  
Composite Films ◽  
The Novel ◽  
Membrane Material

AbstractA novel and excellent composite film was fabricated by simply casting cassava silk fibroin (CSF), chitosan quaternary ammonium salt (HACC), and graphene oxide (GO) in an aqueous solution. Scanning electron microscope images showed that when GO was dispersed in the composite films, the surface of CSF-based composite film became rough, and a wrinkled GO structure could be found. When the content of GO was 0.8%, the film displayed a higher change with respect to the breaking strength and elongation, respectively, up to 97.69 ± 3.69 and 79.11 ± 1.48 MPa, keeping good thermal properties because of the incorporation of GO and HACC. Furthermore, the novel CSF/HACC/GO composite film demonstrates a lower degradation rate, implying the improvement of the resistance to the enzyme solution. Especially in the film with 0.8 wt% GO, the residual mass arrived at 64.35 ± 1.1% of the primary mass after 21 days compared with the CSF/HACC film. This would reclaim the application of silk-based composite films in the biomaterial field.

Graphene oxide/alginate/silk fibroin composite as a novel bionanostructure with improved blood compatibility, less toxicity and enhanced mechanical properties

2020 ◽  
Vol 248 ◽  
pp. 116802 ◽  
Author(s):  
Reza Eivazzadeh-Keihan ◽  
Fateme Radinekiyan ◽  
Hamid Madanchi ◽  
Hooman Aghamirza Moghim Aliabadi ◽  
Ali Maleki
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Silk Fibroin ◽  
Blood Compatibility

Graphene oxide based moisture-responsive biomimetic film actuators with nacre-like layered structures

2017 ◽  
Vol 5 (28) ◽  
pp. 14604-14610 ◽  
Author(s):  
Yaqian Zhang ◽  
Haoyang Jiang ◽  
Feibo Li ◽  
Yanhong Xia ◽  
Yu Lei ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Potential Energy ◽  
Chemical Potential ◽  
Mechanical Deformation ◽  
Layered Structures ◽  
Sustainable Society ◽  
Humidity Gradient ◽  
Biomimetic Actuators

Hygroresponsive biomimetic actuators that convert chemical potential energy contained within the humidity gradient into mechanical deformation are of particular significance for realizing a sustainable society.

SILK FIBROIN FILMS CRYSTALLIZED BY MULTIWALLED CARBON NANOTUBES

2008 ◽  
Vol 22 (09n11) ◽  
pp. 1807-1812 ◽  
Author(s):  
H.-S. KIM ◽  
W.-I. PARK ◽  
Y. KIM ◽  
H.-J. JIN
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Silk Fibroin ◽  
Composite Films ◽  
Tensile Modulus ◽  
Multiwalled Carbon ◽  
Regenerated Silk Fibroin ◽  
Silk Films ◽  
Β Sheet

Silk films prepared from regenerated silk fibroin are normally stabilized by β-sheet formation through the use of solvents (methanol, water etc.). Herein, we report a new method of preparing water-stable films without a β-sheet conformation from regenerated silk fibroin solutions by incorporating a small amount (0.2 wt%) of multiwalled carbon nanotubes (MWCNTs). To extend the biomaterial utility of silk proteins, forming water-stable silk-based materials with enhanced mechanical properties is essential. Scanning electron microscopy and transmission electron microscopy were used to observe the morphology of the MWCNT-incorporated silk films. The wide-angle X-ray diffraction provided clear evidence of the crystallization of the silk fibroin induced by MWCNT in the composite films without any additional annealing processing. The tensile modulus and strength of the composite films were improved by 108% and 51%, respectively, by the incorporation of 0.2 wt% of MWCNTs, as compared with those of the pure silk films. The method described in this study will provide an alternative means of crystallizing silk fibroin films without using an organic solvent or blending with any other polymers, which may be important in biomedical applications.

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