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Shear and Extensional Rheology of Linear and Branched Polybutylene Succinate Blends

Violette Bourg 1, 2, 3, 4 Rudy Valette 5 Nicolas Le Moigne 1 Patrick Ienny 2 Valérie Guillard 3 Anne Bergeret 1
1 PCH - IMT Mines Alès - Polymères Composites et Hybrides
2 DMS - Durabilité des éco-Matériaux et Structures
IMT - MINES ALES - IMT - MINES ALES, LMGC - Laboratoire de Mécanique et Génie Civil
3 UMR IATE - Ingénierie des Agro-polymères et Technologies Émergentes
4 Nestlé Institute of Health Sciences SA [Lausanne, Switzerland]
5 CEMEF - Centre de Mise en Forme des Matériaux
Abstract : The molecular architecture and rheological behavior of linear and branched polybutylene succinate blends have been investigated using size-exclusion chromatography, small-amplitude oscillatory shear and extensional rheometry, in view of their processing using cast and blown extrusion. Dynamic viscoelastic properties indicate that a higher branched polybutylene succinate amount in the blend increases the relaxation time due to an increased long-chain branching degree. Branched polybutylene succinate exhibits pronounced strain hardening under uniaxial elongation, which is known to improve processability. Under extensional flow, the 50/50 wt % blend exhibits the same behavior as linear polybutylene succinate.
Keywords : molecular architecture long-chain branching polybutylene succinate biodegradable size-exclusion chromatography shear rheology extensional rheology
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https://hal.mines-ales.fr/hal-03154909
Contributor : Administrateur Imt - Mines Alès <>
Submitted on : Monday, March 1, 2021 - 1:37:36 PM
Last modification on : Wednesday, March 31, 2021 - 3:50:49 PM

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EM-ALES | PSL | IATE | ENSMP_CEMEF | CIRAD | ENSMP | MIPS | UNIV-MONTPELLIER | LMGC | CNRS | INRAE | MONTPELLIER-SUPAGRO | BA | CFL | INSTITUT-TELECOM | PARISTECH

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Violette Bourg, Rudy Valette, Nicolas Le Moigne, Patrick Ienny, Valérie Guillard, et al.. Shear and Extensional Rheology of Linear and Branched Polybutylene Succinate Blends. Polymers, MDPI, 2021, 13 (4), pp.652. ⟨10.3390/polym13040652⟩. ⟨hal-03154909⟩

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