Investigation of the Role of additive and production method on the formation of β Phase and Piezoelectricity in PVDF-SiC Composites

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-03-20 DOI:10.1016/j.materresbull.2025.113439

Mina Rasoolzadeh, Zahra Sherafat, Mehran Vahedi

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Abstract

To achieve the highest piezoelectric properties in PVDF, the formation of the β-phase is of particular importance. This research aims to investigate the simultaneous effect of the production method and additive content on the formation of β-phase. So PVDF-SiC composites containing different amounts of SiC were produced by electrospinning, casting, and hot compression molding and the existing phases, crystallinity percentage, and type of crystalline phase of PVDF and piezoelectric properties of the specimens were determined. For the electrospun and cast samples, the electroactive and crystalline phases were β and γ, respectively. The hot compression molded samples contained a small fraction of β-phase as their electroactive phase, while their crystalline phase was α. The electrospun specimens had the highest amount of electroactive phase, percentage of crystallinity and sensitivity. It can be concluded that the production method determines the type of PVDF phase and the additive can affect the amount of phases.

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添加剂及制备方法对PVDF-SiC复合材料β相形成及压电性的影响研究

为了在PVDF中获得最高的压电性能，β相的形成尤为重要。本研究旨在探讨制备方法和添加剂含量对β相形成的同时影响。通过静电纺丝、铸造和热挤压成型制备了不同SiC含量的PVDF-SiC复合材料，测定了PVDF的现有相、结晶率、晶相类型以及样品的压电性能。电纺丝和铸造样品的电活性相为β，晶相为γ。热压缩成型样品的电活性相为少量β相，晶相为α相。电纺丝样品的电活性相量、结晶率和灵敏度最高。结果表明，生产方法决定了PVDF相的种类，添加剂影响相的数量。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.