We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Macromolecular Architecture‐Dependent Polymorphous Crystallization Behavior of PVDF in the PVDF/γ‐BL System via Thermally Induced Phase Separation.
- Authors
Gaßdorf, Florian; Fan, Zengxuan; Schwaderer, Jan; Beuermann, Sabine; Wilhelm, René; Weber, Alfred P.; Fischlschweiger, Michael
- Abstract
This study investigates the effect of the macromolecular architecture of poly(vinylidene fluoride) (PVDF) on its thermally induced phase separation (TIPS) behavior and polymorphic crystallization in the PVDF/γ‐butyrolactone (PVDF/γ‐BL) system. Preparative PVDF fractions with specific macromolecular architecture and phase constitution are generated. The results show that PVDF's macromolecular architecture, particularly the degree of branching and regio‐defects, plays a significant role in its temperature‐dependent crystallization and resulting polymorphic phases. While regio‐defects dominate crystallization in the temperature range between 30 and 25 °C, the degree of branching becomes decisive in the 25–20 °C interval. The developed fractions of PVDF are further analyzed in terms of their molecular weight distribution, revealing that the PVDF fractions crystallized out of solution have similar molecular weight distributions with lower dispersity compared with the feed polymer. These findings are crucial for macromolecular separation and adjustment of PVDF polymorphic properties and hence for the development of tailor‐made PVDF matrix materials for composites and membranes. The findings suggest the possibility of polymorphous phase tailoring of PVDF based on macromolecular architecture due to temperature‐controlled crystallization out of solution and strongly motivate further research to reveal deeper knowledge of regio‐defect and branching influence of PVDF solution crystallization.
- Subjects
PHASE separation; CRYSTALLIZATION; POLYMERS; DIFLUOROETHYLENE; MOLECULAR weights; COMPOSITE materials
- Publication
Macromolecular Rapid Communications, 2023, Vol 44, Issue 20, p1
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.202300177