A self-powered wearable piezoelectric nanogenerator for physiological monitoring based on lead zirconate titanate/microfibrillated cellulose@polyvinyl alcohol (PZT/MFC@PVA) composition

Eco-Friendly Cellulose-Based Nonionic Antimicrobial Polymers with Excellent Biocompatibility, Nonleachability, and Polymer Miscibility

“…The water contact angle test is frequently used to characterize the hydrophilic and hydrophobic properties of polymeric materials. , The water contact angle of the pure PVA film is 35.5° (Figure A,B and Table ). The contact angle of the cellulose-based composite films prepared by combining MIPA and MICA with PVA increased significantly.…”

“…The surface morphologies of pure PVA, PVA-MICA, and PVA-MIPA films were studied using SEM analysis. The surface of the pure PVA 58,59 The water contact angle of the pure PVA film is 35.5°(Figure 9A,B and Table 5). The contact angle of the cellulose-based composite films prepared by combining MIPA and MICA with PVA increased significantly.…”

Tuning the Electromechanical Response of P(VDF-TrFE)/ZnSnO3-Based Binary Piezoelectric Composites for Biomechanical Energy-Harvesting and Self-Powered Mechanosensing

“…Mechanical energy harvesting by using polymer-based flexible piezoelectric, triboelectric, and hybrid devices is perhaps the most widely studied research topic in present days, especially in the field of strain sensing, vibration sensing, and small electronics. , Due to their excellent performance, they are now being used in biomedical fields and healthcare monitoring too. , For this purpose, different non-piezoelectric polymers like polydimethylsiloxane (PDMS), ecoflex, etc., hydrogels like poly­(vinyl alcohol) (PVA), gelatine, etc., and piezoelectric polymers like poly­(vinylidene fluoride) (PVDF) and its co/ter-polymers, thermoplastic polyurethane (TPU), cellulose, nylon-11, poly­(vinyl chloride) (PVC), etc. have been utilized by researchers all over the globe.…”

“…1,2 Due to their excellent performance, they are now being used in biomedical fields and healthcare monitoring too. 3,4 For this purpose, different non-piezoelectric polymers like polydimethylsiloxane (PDMS), 5 ecoflex, 6 etc., hydrogels like poly(vinyl alcohol) (PVA), 7 gelatine, 8 etc., and piezoelectric polymers like poly(vinylidene fluoride) (PVDF) 9 and its co/ter-polymers, 10 thermoplastic polyurethane (TPU), 11 cellulose, 12 nylon-11, 13 poly(vinyl chloride) (PVC), 14 etc. have been utilized by researchers all over the globe.…”

Improved Energy Harvesting Ability of Single-Layer Binary Fiber Nanocomposite Membrane for Multifunctional Wearable Hybrid Piezoelectric and Triboelectric Nanogenerator and Self-Powered Sensors

“…Numerous materials and structures have been investigated to enhance the electrical output of PENGs. − Polyvinylidene fluoride (PVDF) and its copolymers, characterized by the presence of ferroelectric β-phase crystals, stand out as popular choices due to their outstanding piezoelectric properties . However, as electronic devices and integration technologies continue to evolve, conventional PVDF-based nanogenerators struggle to meet the escalating demands of energy consumption.…”