<  Back to the Polytechnique Montréal portal

Polypropylene-based porous membranes: Influence of polymer composition, extrusion draw ratio and uniaxial strain

Pilar Castejon, Kian Habibi, Amir Saffar, Abdellah Ajji, Antonio B. Martinez and David Arencon

Article (2018)

[img]
Preview
Published Version
Terms of Use: Creative Commons Attribution.
Download (11MB)
Cite this document: Castejon, P., Habibi, K., Saffar, A., Ajji, A., Martinez, A. B. & Arencon, D. (2018). Polypropylene-based porous membranes: Influence of polymer composition, extrusion draw ratio and uniaxial strain. Polymers, 10(1). doi:10.3390/polym10010033
Show abstract Hide abstract

Abstract

Several commercial grades of homo-polymer and its blends were selected to prepare microporous membranes through melt extrusion-annealing-uniaxial stretching technique (MEAUS). Branched or very fluid polypropylene was employed to modify the polymeric composition. In some blends, micro-sized calcium carbonate was added. We analysed the influence of sample composition, extrusion draw ratio, and we performed a deep study concerning the uniaxial strain rate, using in some cases extreme strain rates and strain extents. The crystalline features were studied by Differential Scanning Calorimetry (DSC), and the morphology of porous structure was analyzed through Scanning Electron Microscopy (SEM). Thermal stability and thermomechanical performance was measured by thermogravimetric analysis (TGA) and dynamic-mechanical-thermal (DTMA) study. A close relationship was found between crystalline characteristics, porous morphology and the trends registered for permeability.

Uncontrolled Keywords

extrusion; polypropylene-based membranes; porous morphology

Open Access document in PolyPublie
Subjects: 1800 Génie chimique > 1800 Génie chimique
1800 Génie chimique > 1802 Génie biochimique
Department: Département de génie chimique
Research Center: CREPEC - Centre de recherche sur les systèmes polymères et composites à haute performance
Date Deposited: 13 Jul 2021 14:35
Last Modified: 14 Jul 2021 01:20
PolyPublie URL: https://publications.polymtl.ca/4816/
Document issued by the official publisher
Journal Title: Polymers (vol. 10, no. 1)
Publisher: MDPI
Official URL: https://doi.org/10.3390/polym10010033

Statistics

Total downloads

Downloads per month in the last year

Origin of downloads

Dimensions

Repository Staff Only