scholarly journals Correlation between processing conditions, microstructure and mechanical behavior in regenerated silkworm silk fibers

2011 ◽  
Vol 50 (7) ◽  
pp. 455-465 ◽  
Author(s):  
Gustavo R. Plaza ◽  
Paola Corsini ◽  
Enrico Marsano ◽  
José Pérez-Rigueiro ◽  
Manuel Elices ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Processing Conditions ◽  
Silk Fibers ◽  
Silkworm Silk

Electrospun Mussel-derived Silk Fibers

2020 ◽  
Vol 14 (1) ◽  
pp. 14-20 ◽  
Author(s):  
Dan Tian ◽  
Dan-Ni Yu ◽  
Yi-Ming Xu ◽  
Xu-Yin Ding ◽  
Zhou-Yu Zhang ◽  
...  
Keyword(s):  
High Strength ◽  
Alcohol Solution ◽  
Protein Solution ◽  
High Mechanical Strength ◽  
Silk Fibers ◽  
Spider Dragline Silk ◽  
Blue Mussels ◽  
Wetting Properties ◽  
The World ◽  
Silkworm Silk

Background: Though there are many patents on silk, patents on sea silk are rare. Sea silk is one of the most coveted materials in the world, and the technology to make sea silk is at an extremely high risk of extinction. Unlike spider dragline silk and silkworm silk, this natural silk has been forgotten in the academic commune for millennia, though it has many fascinating properties: high strength, remarkable adhesion, extreme lightweight, and others. Method: Here we report that mussel-derived silk fibers can be fabricated by electrospinning. Instead of extracting proteins from byssus, we directly use the protein solution from alive blue mussels, which are intensely commercially used. The protein solution and the polyvinyl alcohol solution are mixed together to produce mussel-based silk fibers. Results: The mussel-based silk fibers have many special properties like high mechanical strength, remarkable super-contraction and good wetting properties. Conclusion: The electrospinning mussel-based silk fibers have the potential for use as a replacement for the rarest sea silk and as a new bio-inspired material with multi-functions.

scholarly journals Silkworm silk fibers vs PEEK reinforced rubber luminescent strain gauge and stretchable composites

2018 ◽  
Vol 156 ◽  
pp. 254-261 ◽  
Author(s):  
Luca Valentini ◽  
Silvia Bittolo Bon ◽  
Lorenzo Mussolin ◽  
Nicola M. Pugno
Keyword(s):  
Strain Gauge ◽  
Silk Fibers ◽  
Silkworm Silk

Production of Submicron Diameter Silk Fibers under Benign Processing Conditions by Two-Fluid Electrospinning

2006 ◽  
Vol 39 (3) ◽  
pp. 1102-1107 ◽  
Author(s):  
Mao Wang ◽  
Jian H. Yu ◽  
David L. Kaplan ◽  
Gregory C. Rutledge
Keyword(s):  
Processing Conditions ◽  
Silk Fibers ◽  
Two Fluid

Preparation of Braided Silk as a Tubular Tissue Engineering Scaffold

2011 ◽  
Vol 175-176 ◽  
pp. 95-99 ◽  
Author(s):  
Hui Jing Zhao ◽  
Ming Zhong Li
Keyword(s):  
Mechanical Properties ◽  
Tissue Engineering ◽  
Unit Area ◽  
Tissue Engineering Scaffold ◽  
The Other ◽  
The Novel ◽  
Ethanol Treatment ◽  
Silk Fibers ◽  
Long Time ◽  
Silkworm Silk

Silkworm silk has been recognized as a satisfactory biomaterial for long time due to its exceptional biocompatibility, biodegradability, mechanical properties etc. For example, silk fibers in the form of sutures have been used for centuries. The aim of this study is to discuss the potential usage of silk as the novel biomedical devices, such as blood vessels. In this study, cuit silks prepared from degummed raw silks were twisted as threads with four different yarn linear densities. A specific braiding machine was used to weave those threads into a tube. Subsequently two different groups of silk tubes were prepared. One was treated by ethanol and the other without. Thickness, porosity, mass per unit area of two groups of braided tubes were measured. Its mechanical properties were also studied. The influence of ethanol treatment and various yarn linear densities on its structural and mechanical properties was also studied. Results indicated that structural and mechanical properties of the tubes were significatly changed by the yarn linear densities and ethanol treatment. Conclusively, braided silk tube could be a potential blood vessel tissue engineering scaffold.

scholarly journals Effect of Different Additives in Diets on Secondary Structure, Thermal and Mechanical Properties of Silkworm Silk

Materials ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 14 ◽  
Author(s):  
Lan Cheng ◽  
Huiming Huang ◽  
Jingyou Zeng ◽  
Zulan Liu ◽  
Xiaoling Tong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Amino Acid ◽  
Large Scale ◽  
Fiber Composites ◽  
Metallic Ions ◽  
Silk Fibers ◽  
Random Coils ◽  
Silkworm Silk ◽  
Β Sheet

In this study, eight types of materials including nanoparticles (Cu and CaCO3), metallic ions (Ca2+ and Cu2+), and amino acid substances (serine, tyrosine, sericin amino acid, and fibroin amino acid) were used as additives in silkworm diets to obtain in-situ modified silk fiber composites. The results indicate that tyrosine and fibroin amino acids significantly increase potassium content in silk fibers and induce the transformation of α-helices and random coils to β-sheet structures, resulting in higher crystallinities and better mechanical properties. However, the other additives-modified silk fibers show a decrease in β-sheet contents and a slight increase or even decrease in tensile strengths. This finding provides a green and effective approach to produce mechanically enhanced silk fibers with high crystallinity on a large scale. Moreover, the modification mechanisms of these additives were discussed in this study, which could offer new insights into the design and regulation of modified fibers or composites with desirable properties and functions.

Chemical structure and dynamic mechanical behavior of silk fibers modified with different kinds of epoxides

1994 ◽  
Vol 52 (8) ◽  
pp. 1037-1045 ◽  
Author(s):  
Hideki Shiozaki ◽  
Masuhiro Tsukada ◽  
Yoko Gotoh ◽  
Nobutami Kasai ◽  
Giuliano Freddi
Keyword(s):  
Mechanical Behavior ◽  
Chemical Structure ◽  
Silk Fibers ◽  
Dynamic Mechanical ◽  
Dynamic Mechanical Behavior

scholarly journals Combining Living Microorganisms with Regenerated Silk Provides Nanofibril Based Thin Films with heat Responsive Wrinkled States for Smart Food Packaging

2018 ◽  
Author(s):  
Luca Valentini ◽  
Silvia Bittolo Bon ◽  
Nicola Pugno
Keyword(s):  
Thin Films ◽  
Food Packaging ◽  
Storage Conditions ◽  
Food Storage ◽  
Silk Fibers ◽  
Co2 Diffusion ◽  
Smart Coatings ◽  
Coating Morphology ◽  
High Thermal Expansion ◽  
Silkworm Silk

Regenerated silk (RS) is a protein-based “biopolymer” that enables the design of new materials; here we sought to “bionic” the process of regenerated silk production by fermentation assisted method. Based on yeast’s fermentation, here we produced a living hybrid composite made of regenerated silk nanofibrils and a single-cell fungi, the Saccharomyces Cerevisiae yeast extract, by fermentation of such microorganisms at room temperature in the dissolution bath of silkworm silk fibers. The fermentation-based processing enhances the beta-sheet content of the RS, corresponding to a reduction in water permeability and CO2 diffusion through RS/yeast thin films enabling the fabrication of mechanically robust film that enhances the food storage durability. Finally a transfer print method, which consists of transferring RS and RS/yeast film layers onto self-adherent paraffin substrate, was used for the realization of heat – responsive wrinkles by exploiting the high thermal expansion of the paraffin substrate that regulates the applied strain, resulting in a switchable coating morphology from the wrinkle-free state to a wrinkled state if the food temperature overcomes a designed threshold. We envision that such efficient and smart coatings can be applied for the realization of smart packaging that through such temperature sensing mechanism can be used to control the food storage conditions.

Investigation of the influence of processing conditions on the thermal, rheological and mechanical behavior of polypropylene nanocomposites

2012 ◽  
Vol 53 (5) ◽  
pp. 1001-1010 ◽  
Author(s):  
H. Mattausch ◽  
S. Laske ◽  
I. Đuretek ◽  
J. Kreith ◽  
G. Maier ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Processing Conditions ◽  
Polypropylene Nanocomposites
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