Jing Zhao, Tao Li, Haoyang Sun, Zhengyang Lu, Tiancheng Xiong, Dandan Li, Dazhi Sun
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Regulated crystallization and piezoelectric properties of bio-based poly(L-lactic acid)/ diatomite composite fibers by electrospinning
Biodegradable poly(L-lactic acid) (PLLA) is recognized as a flexible piezoelectric material that overcomes the limitations of brittle piezoelectric ceramics and non-degradable piezoelectric polymer materials. The piezoelectric properties of PLLA are closely associated to its crystallinity and crystal phase structure. In this study, natural diatomite (DE) is used to adjust the crystallization behaviors and piezoelectric properties of PLLA. The PLLA/DE biodegradable composite fibers with enhanced piezoelectric properties were prepared via electrospinning. Our findings show that DE act as nucleating agents, facilitating the formation of α-phase crystals and thereby enhancing the crystallinity, Young’s modulus, and piezoelectric properties of PLLA. The piezoelectric device fabricated from the PLLA/DE composite fibers containing 5 wt% DE demonstrates an output voltage nearly 2.5 times greater than that of the neat PLLA sample, while also exhibiting excellent stability even after 1000 cycles. With good flexibility, high piezoelectric performance, and degradability, the developed DE/PLLA composite fibers can be easily integrated into devices to produce high-performance piezoelectric materials suitable for environmentally friendly applications.
期刊介绍:
Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field.
The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest.
Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials.
Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.