Physical characterization of the liquid adhesive from orb-weaving spiders

Fernando G. Torres; Omar P. Troncoso; Fernando Cavalie

doi:10.1016/j.msec.2013.09.030

Physical characterization of the liquid adhesive from orb-weaving spiders

Fernando G. Torres, Omar P. Troncoso, Fernando Cavalie

Sección de Ingeniería Mecánica

Pontifical Catholic Univ. of Peru

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Orb-weaving spiders produce bioadhesives that are used to capture their prey. In this paper, the physical properties of these adhesives are characterised. The liquid adhesive from Argiope argentata spiders has been studied and the morphological properties of the droplets, including size, shape and volume were determined. An estimation of viscosity and Young's modulus using atomic force microscopy has also been carried out. Morphological characterization confirmed that the liquid adhesive displayed a typical beads-on-a-string (BOAS) morphology on the silk fibres. The experimental data confirmed that the elastic modulus of the liquid adhesive from A. argentata was in the range 20-100 kPa which is in agreement with the Dahlquist criterion for adhesives.

Original language	English
Pages (from-to)	341-344
Number of pages	4
Journal	Materials Science and Engineering C
Volume	34
Issue number	1
DOIs	https://doi.org/10.1016/j.msec.2013.09.030
State	Published - 1 Jan 2014

Keywords

Nanoindentation
Spider adhesive
Spider silk

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AB - Orb-weaving spiders produce bioadhesives that are used to capture their prey. In this paper, the physical properties of these adhesives are characterised. The liquid adhesive from Argiope argentata spiders has been studied and the morphological properties of the droplets, including size, shape and volume were determined. An estimation of viscosity and Young's modulus using atomic force microscopy has also been carried out. Morphological characterization confirmed that the liquid adhesive displayed a typical beads-on-a-string (BOAS) morphology on the silk fibres. The experimental data confirmed that the elastic modulus of the liquid adhesive from A. argentata was in the range 20-100 kPa which is in agreement with the Dahlquist criterion for adhesives.

KW - Nanoindentation

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KW - Spider silk

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Physical characterization of the liquid adhesive from orb-weaving spiders

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Keywords

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