Slip knots and unfastening topologies enhance toughness without reducing strength of silk fibroin fibres.

Abstract:

:The combination of high strength and high toughness is a desirable feature that structural materials should display. However, while in the past, engineers had to compromise on either strength or toughness depending on the requested application, nowadays, new toughening strategies are available to provide strong materials with high toughness. In this paper, we focus on one of such strategy, which requires no chemical treatment, but the implementation of slip knots with optimized shape and size in the involved material, which is silkworm silk in this case. In particular, a variety of slip knot topologies with different unfastening mechanisms are investigated, including even complex knots usually used in the textile industry, and their efficiency in enhancing toughness of silk fibres is discussed.

journal_name

Interface Focus

journal_title

Interface focus

authors

Berardo A,Pantano MF,Pugno NM

doi

10.1098/rsfs.2015.0060

subject

Has Abstract

pub_date

2016-02-06 00:00:00

pages

20150060

issue

1

eissn

2042-8898

issn

2042-8901

pii

rsfs20150060

journal_volume

6

pub_type

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