In this contribution the anti-solvent crystallization of poly(vinylidene fluoride) (PVDF) as well as its blends and block copolymers with poly(methyl methacrylate) (PMMA) is considered. The impact of precipitation conditions such as solvent, precipitant, and its additives on the type of the PVDF crystalline phase is shown. Special attention is paid to the fraction of β crystalline phase in the material. Generally, increased ion concentrations result in higher β phase contents. With sufficient amounts of CaCl₂, LiCl, and HCl in methanol almost only the β crystalline phase of PVDF is obtained. The presence of PMMA is not necessarily required for β phase formation.

在这一贡献中，考虑了聚偏二氟乙烯（PVDF）的反溶剂结晶以及其与聚甲基丙烯酸甲酯（PMMA）的共混物和嵌段共聚物。显示了沉淀条件（例如溶剂，沉淀剂及其添加剂）对PVDF结晶相类型的影响。要特别注意材料中β晶相的比例。通常，增加的离子浓度会导致更高的β相含量。在甲醇中使用足够量的CaCl ₂，LiCl和HCl时，几乎只能获得PVDF的β晶相。β相的形成并不一定需要PMMA的存在。