聚（偏氟乙烯-三氟乙烯） (poly (vinylidene fluoride-trifluoroethylene), P（VDF-TrFE）) 是一種眾所周知，具有壓電性質的電活性高分子 （electroactive polymer, EAP）。這種高分子由於壓電效應能夠將電能轉化為機械能而被廣泛用於機械手臂或是人造肌肉。在這項研究中，我們將P（VDF-TrFE）和基於P（VDF-TrFE）的三元共聚物P（VDF-TrFE-CTFE）採用單軸或同軸靜電紡絲製備奈米纖維，其中P（VDF-TrFE-CTFE）不同於P（VDF-TrFE），加入氯三氟乙烯 (chlorotrifluoroethylene , CTFE)，並檢驗這兩種類型的奈米纖維在張力下機械性質與微觀結構的差異。拉伸試驗、掃描式電子顯微鏡和即時性小角與廣角X光散射用於測量基於P（VDF-TrFE）的EAPs之楊氏模數和微觀結構。基於從 EAPs 之間機械性質和微觀結構的比較中得出的原理，我們能夠在機械工程和生物醫學工程領域中開發出具有所需性能的壓電材料。;Poly (vinylidene fluoride-trifluoroethylene), P(VDF-TrFE), is a well-known electroactive polymer (EAP) displaying piezoelectricity. These kinds of polymers are widely used in mechanical arms or artificial muscles since their piezoelectricity nature allows them to convert electrical power to mechanical energy. In this study, we employed the uniaxial or coaxial electrospinning process to prepare nanofibers from P(VDF-TrFE) and from a P(VDF-TrFE)-based terpolymer, P(VDF-TrFE-CTFE), which differs from P(VDF-TrFE) by the presence of chlorotrifluoroethylene (CTFE) and examined the differences in mechanical properties and microstructures between the two types of nanofibers when they were under tension. Tensile tests, scanning electron microscopes and in-situ small- and wide-angle X-ray scattering were employed to measure the Young′s modulus and microstructure of the P(VDF-TrFE)-based EAPs. Based on the principles drawn from the comparison in mechanical properties and microstructures between the EAPs, we may develop piezoelectric materials with desired properties for applications in mechanical and biomedical engineering.
