Výsledky vyhledávání - "Ingo F. C. Naue"

Quantifying separation energy with a modified Capillary Break-up Extensional Rheometer (CaBER) to study polymer solutions

Autor: Christopher O. Klein, Kamran Riazi, Mahdi Abbasi, Manfred Wilhelm, Ingo F. C. Naue

Publikováno v: Soft Materials. 19:199-212

A Capillary Break-up Extensional Rheometer (CaBER) was modified to enable measurements of the axial force in combination with the related displacement. This makes it possible to determine the separ...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::36af96f9ef3e16e6b6c24f75fd8294df
https://doi.org/10.1080/1539445x.2020.1792929

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Derivation of a Qualitative Model for the Spatial Characteristic Wavelength of Extrusion Flow Instabilities: Investigation of a Polybutadiene Rubber through Capillary, Slit and Complex Geometry Extrusion Dies

Autor: Christos K. Georgantopoulos, Masood K. Esfahani, Michael A. Pollard, Ingo F. C. Naue, Andrea Causa, Roland Kádár, Manfred Wilhelm

Publikováno v: Macromolecular Materials and Engineering, 307 (10), Art.-Nr.: 2200313

The extrusion flow instabilities of commercial polybutadiene (PBD) are investigated as a function of the different extrusion die geometries, such as round capillary, slit, and complex cross-section profile slit dies via capillary rheology. Qualitativ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd0f60cbbc854375b91403522be85524
https://publikationen.bibliothek.kit.edu/1000149809

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A new slit-radial die for simultaneously measuring steady state shear viscosity and first normal stress difference of viscoelastic liquids via capillary rheometry

Autor: Masood Khabazian Esfahani, Christos K. Georgantopoulos, Ingo F. C. Naue, Joachim Sunder, Manfred Wilhelm

Publikováno v: Journal of Applied Polymer Science, 139 (18), Art.-Nr.: 52094

A new slit-radial die capable of simultaneously obtaining steady state shear viscosity η(γ) and the average first normal stress difference coefficient via capillary rheometry has been developed. The steady state shear viscosity η(γ) and average f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::daa0fef7b3aa49bb4e38cc741420f890

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High sensitivity measurements of normal force under large amplitude oscillatory shear

Autor: Manfred Wilhelm, Roland Kádár, Ingo F. C. Naue

Publikováno v: Rheologica Acta. 57:757-770

The two aims of this publication are to introduce a new and rheometer-independent rheometric tool for measuring the axial normal force in oscillatory shear rheology and to study the normal forces of polyolefin melts under large amplitude oscillatory

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3afc101c2c42222668f615e7435d6326
https://doi.org/10.1007/s00397-018-1111-y

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Modeling the spatial characteristics of extrusion flow instabilities for styrene-butadiene rubbers: Investigating the influence of molecular weight distribution, molecular architecture, and temperature

Autor: Michael A. Pollard, Christos K. Georgantopoulos, Andrea Causa, Carlo Botha, Manfred Wilhelm, Masood K. Esfahani, Ingo F. C. Naue, Roland Kádár

Publikováno v: Physics of Fluids. 33:093108

The extrusion flow instabilities of three commercial styrene-butadiene rubbers (SBR) are investigated as a function of molecular weight distribution (MWD); molecular architecture (linear, branched); and temperature. The samples have multimodal MWD, w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::11795f0cbcd096f227b9c5e579a2362b
https://doi.org/10.1063/5.0061334

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Mechano‐Optical Characterization of Extrusion Flow Instabilities in Styrene‐Butadiene Rubbers: Investigating the Influence of Molecular Properties and Die Geometry

Autor: Masood K. Esfahani, Ingo F. C. Naue, Andrea Causa, Christos K. Georgantopoulos, Carlo Botha, Roland Kádár, Manfred Wilhelm, Nico Dingenouts

Publikováno v: Macromolecular Materials and Engineering. 306:2000801

The extrusion flow instabilities of two commercial styrene-butadiene rubbers are investigated as they vary in isomer content (1,4-cis, 1,4-trans, and 1,2 con- formation) of the butadiene monomer and the molecular architecture (linear, branched). The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::74e39cd4004298a65544b80663c03386
https://doi.org/10.1002/mame.202000801

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First normal stress difference and in-situ spectral dynamics in a high sensitivity extrusion die for capillary rheometry via the ʽhole effect’

Autor: Manfred Wilhelm, Roland Kádár, Ingo F. C. Naue

Publikováno v: Polymer. 104:193-203

The development of a high sensitivity polymer melt extrusion flow instability detection die capable of estimating the normal stress differences of polymer melts during capillary rheometry tests via the 'hole effect' is presented here as proof-of-prin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86fbc1ecae23ea7cac5631bd59faf584
https://doi.org/10.1016/j.polymer.2016.07.061

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A New High Sensitivity System to Detect Instabilities During the Extrusion of Polymer Melts

Autor: Roland Kádár, Ingo F. C. Naue, Manfred Wilhelm

Publikováno v: Macromolecular Materials and Engineering. 300:1141-1152

This publication is concerned with the development of a novel high sensitivity instability detection die for a laboratory size extruder. The high sensitivity detection system consists of piezoelectric transducers placed along the die length to monito

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9fcc230b1e7cecea3123a75413400941
https://doi.org/10.1002/mame.201500148

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