Work

Unveiling the role of elongational flow: Toward enhanced ductility in biopolymer blends

Year: 2025

Type: article

Abstract: In this work, the influence of the elongational flow on the microstructure and the ductility of a poly(lactic acid)/poly(3-hydroxybutyrate- co -3-hydroxyhexanoate) blend was investigated. Anisotropic films were produced through cast extrusion and film blowing, and their morphology and mechanical properties were compared to those of an isotropic compression-molded sample. The results revealed that the application of the elongational flow is effective in inducing relevant modifications of the blend microstructure, passing from a droplet-matrix morphology for the isotropic sample to practically indistinguishable polymer phases in the anisotropic films. These processing-induced morphological alterations induced a brittle-to-ductile transition for both cast-extruded and blown films, which reached an elongation at break of 40 and 74 %, respectively.

Source: Materials Letters

DOI: 10.1016/j.matlet.2025.139940

Authors: Rossella Arrigo, Francesca Ianniello, Chiara Gnoffo, Giuseppe Trapani, Alberto Frache

Institutions: Politecnico di Torino, National Interuniversity Consortium of Materials Science and Technology

Language: English

Topic: Polymer crystallization and properties

Subfield: Polymers and Plastics

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,870

OpenAlex ID: W4417294940

FWCI:

Cites: 9

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