Determination of viscoelastic properties of collagen matter using various methods within extrusion rheometry

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00370559" target="_blank" >RIV/68407700:21220/23:00370559 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.scopus.com/record/display.uri?eid=2-s2.0-85164612574&origin=resultslist&sort=plf-f&src=s&sid=645a66df9196b6f80b3fd29a3551bc41&sot=b&sdt=b&s=AUTHOR-NAME%28skocilas%29&sl=23&sessionSearchId=645a66df9196b6f80b3fd29a3551bc41&relpos=2" target="_blank" >https://www.scopus.com/record/display.uri?eid=2-s2.0-85164612574&origin=resultslist&sort=plf-f&src=s&sid=645a66df9196b6f80b3fd29a3551bc41&sot=b&sdt=b&s=AUTHOR-NAME%28skocilas%29&sl=23&sessionSearchId=645a66df9196b6f80b3fd29a3551bc41&relpos=2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0159823" target="_blank" >10.1063/5.0159823</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of viscoelastic properties of collagen matter using various methods within extrusion rheometry

Popis výsledku v původním jazyce

This contribution deals with the investigation of viscoelastic properties of the collagen matter using the extrusion rheometry. The bovine collagen matter with a high mass fraction of the collagen (8 %) is extracted from the calf skin and is used in the food industry as an edible sausage casing. Experiments were performed using the extrusion rheometer. Samples are pushed through the modified rectangular capillary (called the hole-pressure capillary) by the hydraulically driven piston. Bottom part of the capillary head is equipped with five pressure transducers monitoring pressures along the capillary. Upper capillary head is equipped with one pressure transducer mounted in the groove. The so-called hole pressure value can be measured by these experiments. The hole pressure is then used to evaluate the viscoelastic parameter: first normal stress difference N1. Other possible ways to determine the viscoelasticity of the collagen by extrusion are used in this contribution as well. The exit pressure method uses the pressure value in the position of capillary end. The value is reached by the extrapolation of pressure values from five pressure transducers. The jet swell evaluation method uses the image (photography) of the extruded sample and evaluates the expansion of material when it leaves the capillary. All methods were used to quantify the viscoelastic effect. Methods are compared with each other and their suitability to the collagen matter is discussed. The hole pressure method was found to have a solid data overlap with the exit pressure method (N1~ 180 000 Pa) at high shear rates (γ = 3500 s-1). The hole pressure ratio pHole/p2 was found to be between 13 and 19 % during experiments. The N1 values are compared with similar experiments in the literature with some positive similarities. All this despite the fact, that collagen data in this study are evaluated under much bigger shear rates.

Název v anglickém jazyce

Determination of viscoelastic properties of collagen matter using various methods within extrusion rheometry

Popis výsledku anglicky

This contribution deals with the investigation of viscoelastic properties of the collagen matter using the extrusion rheometry. The bovine collagen matter with a high mass fraction of the collagen (8 %) is extracted from the calf skin and is used in the food industry as an edible sausage casing. Experiments were performed using the extrusion rheometer. Samples are pushed through the modified rectangular capillary (called the hole-pressure capillary) by the hydraulically driven piston. Bottom part of the capillary head is equipped with five pressure transducers monitoring pressures along the capillary. Upper capillary head is equipped with one pressure transducer mounted in the groove. The so-called hole pressure value can be measured by these experiments. The hole pressure is then used to evaluate the viscoelastic parameter: first normal stress difference N1. Other possible ways to determine the viscoelasticity of the collagen by extrusion are used in this contribution as well. The exit pressure method uses the pressure value in the position of capillary end. The value is reached by the extrapolation of pressure values from five pressure transducers. The jet swell evaluation method uses the image (photography) of the extruded sample and evaluates the expansion of material when it leaves the capillary. All methods were used to quantify the viscoelastic effect. Methods are compared with each other and their suitability to the collagen matter is discussed. The hole pressure method was found to have a solid data overlap with the exit pressure method (N1~ 180 000 Pa) at high shear rates (γ = 3500 s-1). The hole pressure ratio pHole/p2 was found to be between 13 and 19 % during experiments. The N1 values are compared with similar experiments in the literature with some positive similarities. All this despite the fact, that collagen data in this study are evaluated under much bigger shear rates.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/GA21-07851S" target="_blank" >GA21-07851S: Studium metod modifikace mechanických vlastností a struktury kolagenní hmoty</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

9th International Conference on Novel Trends in Rheology IX, 2023

ISBN

978-0-7354-4547-5

ISSN

0094-243X

e-ISSN

1551-7616

Počet stran výsledku

10

Strana od-do

1-10

Název nakladatele

American Institute of Physics Inc.

Místo vydání

—

Místo konání akce

Zlín

Datum konání akce

26. 7. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001007482800017