Elongational rheology of 2, 3 and 4 polymer stars connected by linear backbone chains

We consider the elongational rheology of model polystyrene topologies with 2, 3 and 4 stars, which are connected by one (2-star or “Pom-Pom”), two (3-star) and three (4-star) linear backbone chains. The number of arms of each star varies from q a  = 3 to 24, the molecular weight of the arms from M w...

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Bibliographic Details
Published in:Rheologica acta 2024-05, Vol.63 (6), p.407-422
Main Authors: Hirschberg, Valerian, Schußmann, Max G., Röpert, Marie-Christin, Goecke, Anika, Wilhelm, Manfred, Wagner, Manfred H.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coefficients
Complex Fluids and Microfluidics
Dilution
Elongation
Food Science
Materials Science
Mechanical Engineering
Original Contribution
Polymer Sciences
Polystyrene resins
Rheological properties
Rheology
Soft and Granular Matter
Stress functions
Topology
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Summary:We consider the elongational rheology of model polystyrene topologies with 2, 3 and 4 stars, which are connected by one (2-star or “Pom-Pom”), two (3-star) and three (4-star) linear backbone chains. The number of arms of each star varies from q a  = 3 to 24, the molecular weight of the arms from M w,a  = 25 kg/mol to 300 kg/mol, and the backbone chains from M w,b  = 100 kg/mol to 382 kg/mol. If the length of the arm is shorter than the length of the backbone, i.e. M w,a  
ISSN:0035-4511
1435-1528
DOI:10.1007/s00397-024-01455-x