Surface silanized MWCNTs doped PVDF nanocomposite with self-organized dipoles: an intrinsic study on the dielectric, piezoelectric, ferroelectric, and energy harvesting phenomenology

Abstract

Tailoring the nanoparticles (NPs) dispersion and simultaneously enhancing the polar phase of PVDF polymer is a pivotal issue for developing high-performing dielectric, ferroelectric and piezoelectric nanocomposite. Inadequate dispersion of NPs...

Advantages and limitations of active phase silanization in PVDF composites: Focus on electrical properties and energy harvesting potential

“…[16][17][18][19][20] To promote the even distribution and dispersion of inorganic fillers within a polymer matrix while enhancing adhesion between the filler and the matrix, a technique involving the coating of filler particles with a thin layer of silane coupling agents or polymers has been introduced. 18, [21][22][23] The silanization process, particularly relevant when there is a substantial difference in dielectric permittivity between the active phase powder and the polymer matrix, offers an effective solution. It involves applying silane coupling agents to the surface of ceramic particles, facilitating improved dispersion and interfacial adhesion with the polymer matrix.…”

“…It involves applying silane coupling agents to the surface of ceramic particles, facilitating improved dispersion and interfacial adhesion with the polymer matrix. [21][22][23][24][25] This technique plays a crucial role in achieving a more homogeneous and effective composite material, overcoming the challenges associated with filler incorporation into polymer matrices. The surface modification of filler materials can have varying effects on the piezoelectric properties of composites, depending on how it influences particle dispersion and interactions with the polymer matrix.…”

“…Numerous researchers have emphasized the critical importance of the interface between the active phase (filler) and the polymer matrix in ensuring a homogeneous composite 16–20 . To promote the even distribution and dispersion of inorganic fillers within a polymer matrix while enhancing adhesion between the filler and the matrix, a technique involving the coating of filler particles with a thin layer of silane coupling agents or polymers has been introduced 18,21–23 …”

“…The silanization process, particularly relevant when there is a substantial difference in dielectric permittivity between the active phase powder and the polymer matrix, offers an effective solution. It involves applying silane coupling agents to the surface of ceramic particles, facilitating improved dispersion and interfacial adhesion with the polymer matrix 21–25 . This technique plays a crucial role in achieving a more homogeneous and effective composite material, overcoming the challenges associated with filler incorporation into polymer matrices.…”

Enhanced Triboelectric Effects of Self-Poled MoS2-Embedded PVDF Hybrid Nanocomposite Films for Bar-Printed Wearable Triboelectric Nanogenerators

“…Unaligned dipoles result in increased dielectric losses, which can negatively affect the triboelectric performance. 12 On the other hand, the β-crystal phase consists of a trans-planar (TTTT) zigzag structure, wherein the F atoms are aligned in a single direction with the higher dipole moment perpendicular to the carbon backbone, which affects the ferroelectric and triboelectric properties; thus, the incorporation of PVDF with a β-crystal phase into TENGs results in significantly improved electrical outputs. 13 To induce a transition from the αto the β-crystal phase, various methods including electric poling have been examined.…”