Highly elastic relaxor ferroelectric via peroxide crosslinking.

Area of Science:

• Materials Science
• Polymer Chemistry
• Ferroelectric Materials

Background:

• Relaxor ferroelectrics offer high dielectric constants and electromechanical properties, crucial for electronic devices.
• Enhancing ferroelectric durability via chemical crosslinking is challenging due to reduced crystallinity.
• Maintaining crystalline regions during crosslinking is key to achieving elasticity in relaxor ferroelectric polymers.

Purpose of the Study:

• To develop an elastic relaxor ferroelectric material that overcomes the challenge of reduced crystallinity.
• To synthesize a resilient relaxor ferroelectric with maintained polarization intensity and enhanced elasticity.
• To create a material suitable for wearable electronics and other flexible applications.

Main Methods:

• Utilized P(VDF-CTFE-DB) with reactive double bonds as crosslinking sites to minimize impact on crystallinity.
• Employed peroxide crosslinking to transform linear polymers into a network structure.
• Synthesized the elastic relaxor ferroelectric material at relatively low temperatures.

Main Results:

• Successfully produced a resilient relaxor ferroelectric material with maintained polarization intensity.
• The elastic material exhibited a remarkable dielectric constant, superior resilience, and fatigue resistance.
• Demonstrated a stable ferroelectric response under strains up to 80%.

Conclusions:

• Developed a novel method for creating elastic relaxor ferroelectric materials by carefully controlling crosslinking.
• The synthesized material maintains key ferroelectric properties while offering significant elasticity.
• This approach facilitates the development of cost-effective, high-performance elastomers for advanced electronic applications.