AI Article Synopsis
- Researchers created membranes using a combination of porous silicon dioxide (SiO) and poly(vinylidene fluoride) (PVdF) through a process called electrospinning.
- The composite membranes have tunable thickness and low thermal shrinkage, demonstrating stability at high temperatures but showing changes in electrical properties at around 170°C to 225°C.
- Even after exposure to temperatures over 270°C, the membranes maintained their structure without collapsing, indicating good thermal resilience.
Article Abstract
Porous silicon dioxide (SiO)/poly(vinylidene fluoride) (PVdF), SiO/PVdF, and fibrous composite membranes were prepared by electrospinning a blend solution of a SiO sol-gel/PVdF. The nanofibers of the SiO/PVdF (3/7 wt. ratio) blend comprised skin and nanofibrillar structures which were obtained from the SiO component. The thickness of the SiO skin layer comprising a thin skin layer could be readily tuned depending on the weight proportions of SiO and PVdF. The composite membrane exhibited a low thermal shrinkage of ~3% for 2 h at 200 °C. In the prototype cell comprising the composite membrane, the alternating current impedance increased rapidly at ~225 °C, and the open-circuit voltage steeply decreased at ~170 °C, almost becoming 0 V at ~180 °C. After being exposed at temperatures of >270 °C, its three-dimensional network structure was maintained without the closure of the pore structure by a melt-down of the membrane.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11244255 | PMC |
| http://dx.doi.org/10.3390/polym16131810 | DOI Listing |
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