2025-07-30 ペンシルベニア州立大学（PennState）
Via a technique known as electrospinning, researchers at Penn State weave new possibilities for health sensors that can be part of clothing made with nanofiber materials that generate electricity from the wearer’s motion to power them. Credit: Jennifer M. McCann. All Rights Reserved.
＜関連情報＞
- https://www.psu.edu/news/materials-research-institute/story/spinning-new-flexible-material-self-powered-wearable-sensors
- https://pubs.aip.org/aip/jap/article/137/19/194102/3347060
低分子量P(VDF-TrFE)ナノファイバーの高い結晶性と極相含有率
High crystallinity and polar-phase content in electrospun P(VDF-TrFE) nanofibers with low molecular weight
Wenyi Zhu;Guanchun Rui;Yongsheng Chen;Bo Li;Shihai Zhang;Patrick T. Mather;Q. M. Zhang
Journal of Applied Physics Published:May 16 2025
DOI:https://doi.org/10.1063/5.0267697
Electrospun piezoelectric nanofibers from polyvinylidene fluoride (PVDF) have been widely used in many applications. In PVDF-based polymers, the molecular weight (Mw) plays an important role in determining both crystallization and polarization responses. In the past, polyvinylidene fluoride trifluoroethylene [P(VDF-TrFE)] electrospun nanofibers were produced strictly from high molecular weight polymers (Mw > 200 kDa). Here, we study the electrospun P(VDF-TrFE) nanofibers from comparatively lower Mw polymers (Mw ∼ 100 kDa). We demonstrated a highly electroactive phase in electrospun P(VDF-TrFE) nanofibers without post treatments. During electrospinning, shorter P(VDF-TrFE) polymer chains exhibited higher mobility, which facilitate the formation of all-trans ferroelectric crystals with high crystallinity. By optimizing the mean size of electrospun nanofiber through tailoring the solution concentration and other controlling parameters, P(VDF-TrFE) nanofibers achieved the crystallinity as high as 67% and all-trans conformation reached 79%. The results pave a way for improving the electroactive performance in ferroelectric polymer electrospun nanofibers.
