Effects of Extrusion and Irradiation on the Mechanical Properties of a Water–Collagen Solution

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027022%3A_____%2F22%3AN0000076" target="_blank" >RIV/00027022:_____/22:N0000076 - isvavai.cz</a>

Alternative codes found

RIV/00027022:_____/22:N0000067 RIV/68407700:21220/22:00356362

Result on the web

<a href="https://www.mdpi.com/2073-4360/14/3/578" target="_blank" >https://www.mdpi.com/2073-4360/14/3/578</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/polym14030578" target="_blank" >10.3390/polym14030578</a>

Result language

angličtina

Original language name

Effects of Extrusion and Irradiation on the Mechanical Properties of a Water–Collagen Solution

Original language description

This article describes 1D extension tests on bovine collagen samples (8% collagen in water). At such a high collagen concentration, the mechanical properties of semi-solid samples can be approximated by hyperelastic models (two-parametric HGO and Misof models were used), or simply by Hooke’s law and the modulus of elasticity E. The experiments confirm a significant increase in the E-modulus of the samples irradiated with high-energy electrons. The modulus E~9 kPa of non-irradiated samples increases monotonically up to E~250 kPa for samples absorbing an ebeam dose of ~3300 Gy. This amplification is attributed to the formation of cross-links by irradiation. However, E-modulus can be increased not only by irradiation but also by exposure to a high strain rate. For example, soft isotropic collagen extruded through a 200 mm long capillary increases the modulus of elasticity from 9 kPa to 30 kPa, and the increase is almost isotropic. This stiffening occurs when the corrugated collagen fibers are straightened and are aligned in the flow direction. It seems that the permanent structural changes caused by extrusion mitigate the effects of the ex post applied irradiation. Irradiation of extruded samples by 3300 Gy increases the modulus of E-elasticity only three times (from 30 kPa to approximately 90 kPa). Extruded and ex post irradiated samples show slight anisotropy (the stiffness in the longitudinal direction is on an average greater than the transverse stiffness).

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

21101 - Food and beverages

Project

<a href="/en/project/GA21-07851S" target="_blank" >GA21-07851S: Study of methods for modification of mechanical properties and structire of collagen matter</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Polymers

ISSN

2073-4360

e-ISSN

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Volume of the periodical

14

Issue of the periodical within the volume

578

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

1-12

UT code for WoS article

000756305800001

EID of the result in the Scopus database

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