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Published in: Rheologica Acta 5/2024

09-04-2024 | Original Contribution

Interfacial shear and elongational rheology of immiscible multi-micro-nanolayered polymers: contribution for probing the effect of highly mismatched viscoelastic properties and modeling interfacial tension properties

Authors: Jixiang Li, Ibtissam Touil, Bo Lu, Huagui Zhang, Abderrahim Maazouz, Khalid Lamnawar

Published in: Rheologica Acta | Issue 5/2024

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Abstract

The present work explores the shear and extensional rheology of immiscible multi-micro/nanolayered systems comprising low-density polyethylene (LDPE) paired with polystyrene (PS) and polycarbonate (PC) obtained from forced-assembly multilayer coextrusion. Firstly, miscible multilayer references based on LDPE/LLDPE layers were prepared with their miscibility characterized by shear and elongational measurements. Their strain hardening behaviors were found to be intricately linked to the number of layers and confinement. Secondly, for immiscible LDPE/PS and LDPE/PC multilayers with symmetric (50/50) and asymmetric (10/90) compositions, negative deviation of complex viscosities from neat polymers was highlighted because of the heightened confinement of LDPE chains by PS or PC and reduced entanglements at polymer–polymer interfaces. Intriguingly, LDPE/PC systems exhibited no strain hardening irrespective of layer configuration, while the geometric confinement imposed by PS layers facilitated interactions between single chains with long-chain branching (LCB), leading to strain hardening under specific conditions. Furthermore, the extensional viscosities were predicted using the Macosko model (C.W. Macosko et al. Journal of Rheology. 63 2019), accurately describing the behavior of 1024 layered films for both asymmetric (10/90) LDPE/PS and LDPE/PC systems, but not for 32 layers due to a limited number of interfaces. This study provides insights into quantifying interfacial tension properties in micro/nano-layered systems with high mismatched viscoelastic polymers, shedding light on their strain hardening properties in the presence of increased interfacial area.

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Appendix
Available only for authorised users
Literature
go back to reference Giumanca R (2002) The Effects of Long Chain Branching on the rheological properties of polymers. The University of British Columbia Giumanca R (2002) The Effects of Long Chain Branching on the rheological properties of polymers. The University of British Columbia
go back to reference Lamnawar K, Zhang H, Maazouz A (2013) Coextrusion of multilayer structures, interfacial phenomena. In: Encyclopedia of Polymer Science and Technology Lamnawar K, Zhang H, Maazouz A (2013) Coextrusion of multilayer structures, interfacial phenomena. In: Encyclopedia of Polymer Science and Technology
go back to reference Orwoll RA, Arnold PA (2007) Physical properties of polymers handbook. Mark, JE, Ed 104 Orwoll RA, Arnold PA (2007) Physical properties of polymers handbook. Mark, JE, Ed 104
Metadata
Title
Interfacial shear and elongational rheology of immiscible multi-micro-nanolayered polymers: contribution for probing the effect of highly mismatched viscoelastic properties and modeling interfacial tension properties
Authors
Jixiang Li
Ibtissam Touil
Bo Lu
Huagui Zhang
Abderrahim Maazouz
Khalid Lamnawar
Publication date
09-04-2024
Publisher
Springer Berlin Heidelberg
Published in
Rheologica Acta / Issue 5/2024
Print ISSN: 0035-4511
Electronic ISSN: 1435-1528
DOI
https://doi.org/10.1007/s00397-024-01445-z

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