Supramolecular organization of regenerated silkworm silk fibers

Pérez‐Rigueiro, José; Biancotto, Lautaro; Corsini, Paola; Marsano, Enrico; Calafat, Manuel Elices; Plaza, Gustavo R.; Guinea, Gustavo V.

doi:10.1016/j.ijbiomac.2008.12.001

Cited by 20 publications

(15 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, the microstructural analysis by AFM 59 revealed that the ductile fibers showed a heterogeneous microstructure composed of two phases, in contrast to the homogeneous organization observed in brittle regenerated fibers 59 and in natural silk fibers. 60 In addition, one of the phases was comparable in terms of the size of the nanoglobules with that observed in brittle fibers.…”

Section: Final Comments and Conclusionmentioning

confidence: 90%

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

Plaza

Corsini

Marsano

et al. 2011

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

Regenerated silkworm fibers spun through a wetspinning process followed by an immersion postspinning drawing step show a work to fracture comparable with that of natural silkworm silk fibers in a wide range of spinning conditions. The mechanical behavior and microstructure of these high performance fibers have been characterized, and compared with those fibers produced through conventional spinning conditions. The comparison reveals that both sets of fibers share a common semicrystalline microstructure, but significant differen-

show abstract

Section: Final Comments and Conclusionmentioning

confidence: 90%

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

Plaza

Corsini

Marsano

et al. 2011

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

show abstract

“…It was immediately assumed that post-spinning drawing would modify the microstructure of regenerated fibers by generating a microstructure more similar to that of the natural material. However, the analysis of the fibers by atomic force microscopy showed that the typical size of the microstructural details of fibers subjected to post-spinning drawing was not only smaller than that observed in the natural material, but even smaller than that observed in fibers not subjected to post-spinning drawing [52], Consequently, the improvement in the tensile behaviour was not the result of a microstructure more similar to natural silkworm silk, but rather the opposite.…”

Section: Future Prospectsmentioning

confidence: 87%

Polymeric fibers with tunable properties: Lessons from spider silk

Calafat

Guinea

Pérez‐Rigueiro

et al. 2011

Materials Science and Engineering: C

Self Cite

View full text Add to dashboard Cite

Making artificial fibers inspired in spider silks is considered as one of the milestones in the field of biomimetics. The interest is usually justified by the outstanding tensile properties of natural fibers, but it is usually overlooked that spider silk is endowed with a number of related properties -supercontraction, recovery and the existence of a ground state -that impart the material with additional desirable features, such as the possibility of tuning its mechanical behaviour. In this work we present a review on the experimental Kevwordsanalysis and significance of these properties, stressing the contributions of our research group to the field. It is Spider silk a ' s0 demonstrated how the knowledge gained in the basic study of the natural material has been essential for Supercontraction the improvement of the properties exhibited by artificially processed bio-inspired silk fibers. Regenerated silk

show abstract

“…Intensive study has been conducted to understand the unique mechanical properties of silk fibre. Related research work has focused on the effect of the harvesting conditions on the mechanical properties of B. mori silk [2], the mechanical properties of silkworm silk under different conditions [3], the relationship between the mechanical properties and structure of silk [4,5], and changes in the mechanical properties and structures of B. mori silk exposed to biodegradation [6]. Despite the fact that mechanical properties determine the performance and lifetime of composites, research work mainly focuses on the tensile properties of silk fibre in composites.…”

Section: Characterisationsmentioning

confidence: 99%

Unidirectional Torsion Properties of Single Silk Fibre

Jiang

Cao

Cai

et al. 2016

F&TinEE

View full text Add to dashboard Cite

The unidirectional torsion properties of silk fibre were investigated on a purpose-built single fibre torsion tester. The torsional fracture angle and the number of cycles of torsion at breaking were recorded, and the effect of the gauge length and pretension together with the torsion speed on the torsion properties of single silk fibre was investigated in detail. Scanning electron microscopy (SEM), X-ray diffraction (XRD) analysis and a tensile tester were used to understand the morphology, structure and tensile properties of silk fibre after torsion deformation. SME photos show that silk fibre exhibits a ribbon-like profile after torsion, and fracture tends to occur at both ends of the silk fibre, where a larger number of twists can be observed. The crystallinity calculated from XRD spectra of silk fibre increases from 26.11% to 34.10% after torsion. The breaking stress and strain decreases slightly with an increase in the gauge length. The breaking cycle increases linearly with an increase in the gauge length, while the actual torsional fracture angle decreases gradually at the same time. The torsional fracture angle together with the breaking cycle decreases gradually as the pretension increases. The fracture angle together with the breaking cycle increases with an increase in the torsion speed. Understanding the unidirectional torsion properties of single silk fibre will benefit its further application in specific areas where the fibre will be subject to frequent torsion and deformation.

show abstract

Supramolecular organization of regenerated silkworm silk fibers

Cited by 20 publications

References 34 publications

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

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

Polymeric fibers with tunable properties: Lessons from spider silk

Unidirectional Torsion Properties of Single Silk Fibre

Contact Info

Product

Resources

About