Exploring a New Class of PVDF/3‐Aminopropyltriethoxysilane (core) and 2,2‐Bis(hydroxymethyl)butyric Acid (monomer)‐Based Hyperbranched Polyester Hybrid Fibers by Electrospinning Technique for Enhancing Triboelectric Performance

• Published in: Advanced sustainable systems (Online) 2024-11, Vol.8 (11), p.n/a
• Main Authors: Niranjana, Vadakkaveedu Subramanian, Yoon, Jae Uk, Woo, Insun, Gajula, Prasad, Bae, Jin Woo, Prabu, Arun Anand
• Format: Article
• Language: English
• Subjects: 3‐Aminopropyltriethoxysilane; Bis(hydroxymethyl)butyric acid; hyperbranched polyester; polyvinylidene fluoride; triboelectric nanogenerators
• ISSN: 2366-7486; 2366-7486
• DOI: 10.1002/adsu.202400311

With the rapid advancement in sensor technologies, triboelectric nanogenerators (TENGs) have emerged as a promising sustainable power source for intelligent electronics. Herein, fabricated a novel 3‐aminopropyltriethoxysilane (core) and 2,2‐bis(hydroxymethyl)butyric acid (monomer)‐based hyperbranched polyester by facile single‐step polycondensation technique generation 2 (Si‐HBP‐G2). Further, a new class of polyvinylidene fluoride (PVDF) and different weight percentages (0, 5, 10, 15, and 20 wt%) of Si‐HBP‐G2 hybrid fiber blends are prepared by traditional electrospinning technique. The as‐prepared Si‐HBP‐G2 and its blends are well characterized using SEM/EDS, FTIR, NMR, and XRD studies. The influence of Si‐HBP‐G2 content on triboelectric performance in terms of the open circuit potential (VOC) and short circuit current (ISC) is evaluated using aluminum (Al) as a counter electrode. Among them, 15 wt% of Si‐HBP‐G2/PVDF hybrid fiber mat (PG2‐15) exhibits superior electrical performance. Which is almost increased 5.9 times (22–130 V) of VOC and 4.9 times (0.71–3.5 µA) of ISC than PVDF fiber mate. These results reveal the significance of Si‐HBP‐G2 in the triboelectric performance. The optimized TENG device (PG2‐15/Al‐TENG) exhibits a peak power density of 0.2 Wm−2 at 100 MΩ external load. Finally, the PG2‐15/Al‐TENG practically demonstrates real‐time application energy harvesting applications such as powering 100 LEDs and a stopwatch. Synthesized 2nd generation of silane‐based hyperbranched polymer (Si‐HBP‐G2) for enhancing TENG performance. PVDF/Si‐HBP‐G2 blends with different weight percentages of Si‐HBP‐G2 are prepared by electrospinning technique. PG2 (0 to 20 Wt%) is used as a tribonegative layer in the fabricated TENG device. PG2‐15 achieving 5.9 times better performance than PVDF alone, exhibiting real‐time energy harvesting applications.