PHBV Crystallization under Injection Molding Conditions: Influence of Packing Pressure and Mold Temperature

Ghinwa El Hajj Sleiman (1, 2) , Gael Colomines (3, 1, 2) , Rémi Deterre (3, 2, 1) , Isabelle Petit (3, 2) , E Leroy (3, 1) , S. Belhabib (3, 2)

1 GEPEA-MAPS2 - Matrices Aliments Procédés Propriétés Structure - Sensoriel
2 GEPEA-OSE - Optimisation - Système - Energie
3 GEPEA - Laboratoire de génie des procédés - environnement - agroalimentaire

Poly(3-hydroxy butyrate)-co-(3-hydroxy valerate) (PHBV) is a biobased and biodegradable polyester. This semicrystalline bioplastic could be a good candidate for the replacement of some commodity plastics derived from oil. However, the control of the conditions of its processing in order to obtain optimal properties of the finished products remains a current research subject. The objective of this work is to better understand the crystallization under injection molding conditions by inline measurements during the process. We focused on the influence of two key processing parameters, namely, mold temperature and packing pressure. The modeling of inline temperature measurements allowed an inverse estimation of the thermodynamic melting temperature of PHBV and of the heat of crystallization's variations with processing parameters.

Mots clés: Crystallization; PHBV; injection molding; inline measurement

Domaines: Génie des procédés; Polymères

Ghinwa El Hajj Sleiman, Gael Colomines, Rémi Deterre, Isabelle Petit, E Leroy, et al.. PHBV Crystallization under Injection Molding Conditions: Influence of Packing Pressure and Mold Temperature. Journal of Renewable Materials, 2018, 6 (3), pp.270-276. ⟨10.7569/JRM.2017.634179⟩. ⟨hal-01823407⟩