Influence of Six Plasticizers on the Morphology, Crystallinity, and Thermal Properties of Poly(Vinylidene Difluoride) Films
Year: 2025
Type: article
Abstract: ABSTRACT Poly(vinylidene fluoride) (PVDF) is renowned for its durability but suffers from limited flexibility, restricting its use as a protective topcoat on architectural textiles. This study investigated six ester‐based plasticizers at a loading of 50 wt% in a 10 wt% PVDF solution (dissolved in dimethylacetamide at 50°C) to identify an optimal candidate for enhancing flexibility while maintaining suitable morphology. DSC indicated that P3 (dibutyl phthalate) lowered the polymer's melting temperature to 154°C (from 170°C for pure PVDF) and decreased its glass transition temperature ( T g ) to −81.5°C. However, SEM revealed significant porosity, undermining its protective function. In contrast, P2 (di(propylene glycol)dibenzoate) resulted in a 10°C reduction in melting temperature and a 19°C reduction in crystallization temperature, yet only increased T g by 3°C; the film remained more flexible than unmodified PVDF. SEM confirmed minimal voids, indicating good compatibility. Furthermore, DSC data demonstrated P2 raised the degree of crystallinity from 31% in the reference film to 34% while preserving structural integrity. These findings highlight P2 as the most viable plasticizer for producing flexible PVDF topcoats, offering a simpler, cost‐effective solution with the potential to extend the lifespan of architectural textiles in under‐resourced regions.
DOI: 10.1002/app.57209
Authors: Anya Sonnendecker, Matome W. Mametja, Johan Labuschagne
Institution: University of Pretoria
Language: English
Topic: Polymer Science and PVC
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,140
OpenAlex ID: W4410518921