Macromolecular Architecture‐Dependent Polymorphous Crystallization Behavior of PVDF in the PVDF/γ‐BL System via Thermally Induced Phase Separation

• DOI: 10.1002/marc.202300177
• Publication Date: 2023-07-18T05:31:13Z
• Authors: Florian Gaßdorf; Zengxuan Fan; Jan Schwaderer; Sabine Beuermann; René Wilhelm; Alfred P. Weber; Michael Fischlsch...
• Keywords: Branching (polymer chemistry); Dispersity

This study investigates the effect of macromolecular architecture poly(vinylidene fluoride) (PVDF) on its thermally induced phase separation (TIPS) behavior and polymorphic crystallization in PVDF/γ-butyrolactone (PVDF/γ-BL) system. Preparative PVDF fractions with specific constitution are generated. The results show that PVDF's architecture, particularly degree branching regio-defects, plays a significant role temperature-dependent resulting phases. While regio-defects dominate temperature range between 30 25 °C, becomes decisive 25-20 °C interval. developed further analyzed terms their molecular weight distribution, revealing crystallized out solution have similar distributions lower dispersity compared feed polymer. These findings crucial for adjustment properties hence development tailor-made matrix materials composites membranes. suggest possibility polymorphous tailoring based due to temperature-controlled strongly motivate research reveal deeper knowledge regio-defect influence crystallization.