Shear and Extensional Rheology of Linear and Branched Polybutylene Succinate Blends

Polymers

Valérie Guillard¹  Patrick Ienny²  Rudy Valette³  Violette Bourg⁴  NicolasLe Moigne⁴  Anne Bergeret⁴ 

[1] Ingénierie des Agropolymères et Technologie Emergentes- IATE, Univ Montpellier, INRAE, Institut Agro, 34000 Montpellier, France;LMGC, IMT Mines Ales, Univ Montpellier, CNRS, 30100 Ales, France;MINES ParisTech, CEMEF-Centre de Mise en Forme des Matériaux, CNRS UMR 7635, PSL Research University, CS 10207 rue Claude Daunesse, CEDEX, 06904 Sophia Antipolis, France;Polymers Composites and Hybrids (PCH)-IMT Mines Ales, 30100 Ales, France;

关键词: molecular architecture;    long-chain branching;    polybutylene succinate;    biodegradable;    size-exclusion chromatography;    shear rheology;   

DOI  :  10.3390/polym13040652

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown