Chain extender effect of 3-(4-hydroxyphenyl)propionic acid/layered double hydroxide in biopolyesters containing the succinate moiety

Laura Sisti (1) , Grazia Totaro (1) , Annamaria Celli (1) , Adam Marek (2) , Vincent Verney (3, 4) , Fabrice Leroux (3, 4)

1 UNIBO - Alma Mater Studiorum Università di Bologna = University of Bologna
2 Silesian University of Technology
3 ICCF - Institut de Chimie de Clermont-Ferrand
4 SIGMA Clermont - SIGMA Clermont

3-(4-Hydroxyphenyl)propionic acid intercalated in Mg2Al/layered double hydroxide has been used as a filler in biopolyesters containing the succinate moiety, such as poly(propylene succinate) (PPS), poly(butylene succinate-co-butylene adipate) (PBSA) and poly(butylene succinate) (PBS), with the aim of inducing an effect similar to that of an increment of the molecular weight of the matrices. The composites (1, 5 and 10 wt% of filler) have been prepared by a simple melt blending procedure. X-ray diffraction analysis revealed the presence of intercalated structures in the composites. From melt rheology measurements, a chain extender effect of the filler, towards PBS, PPS and to some extent PBSA, was evident and proportional to the composition, producing a reinforcing role of the filler towards the polymeric chains. Moreover, no gel-like structure was produced. Such findings can be useful in widening the processing window of biopolyesters, in order to design multifunctional materials with adapted properties.

Domaines: Polymères

Laura Sisti, Grazia Totaro, Annamaria Celli, Adam Marek, Vincent Verney, et al.. Chain extender effect of 3-(4-hydroxyphenyl)propionic acid/layered double hydroxide in biopolyesters containing the succinate moiety. New Journal of Chemistry, 2020, 44 (24), pp.10127-10136. ⟨10.1039/C9NJ06322F⟩. ⟨hal-02992462⟩