近年來，穿戴式裝置的市場規模有跳躍式的成長，根據市場調查2024年穿戴式裝置的市場規模將高達680億美元，因此有越來越多與穿戴式裝置相關的研究發表在期刊中，並且也都獲得不錯的成績。有關壓電材料的研究已有數十年之久，但由於效率不佳及沒有適當的應用而遲遲停留在研究階段，但近幾年很多研究顯示可以藉由添加奈米複合材料來增加壓電效率，並且期刊上也發表了有關心震圖(SCG)、血壓量測及充電裝置等相關的應用。由於穿戴式裝置的材料選擇上必須具有一定的韌性，其中又以壓電聚合物P(VDF-TrFE)同時兼具韌性及不錯的壓電效率，因此在眾多壓電材料中P(VDF-TrFE)成為在穿戴式裝置上的最適合的材料。本研究是將壓電聚合物P(VDF-TrFE)薄膜利用熱處理及極化處理的方式提升薄膜結晶度及壓電效果，再利用添加不同維度的奈米碳材料，分別為碳黑(CB)、改質碳黑(OCB)、奈米碳管(CNT)、改質奈米碳管(CNT-COOH)、氧化還原石墨烯(rGO)及氧化石墨烯(GO)，比較不同維度的碳材料與碳材料表面官能基的差異對於P(VDF-TrFE)薄膜結晶度及壓電效果的影響，再藉由添加親油性高分子分散劑(Polymeric Dispersant)提升奈米碳材的分散性，此高分子分散劑是以苯乙烯-馬林酸酐共聚物(SMA系列)和聚醚單胺( Polyoxyalkylene amine、M1000) 進行酰胺化和酰亞胺化反應合成，以奈米碳材與分散劑不同比例(10:1、5:1、1:1、1:5、1:10)進行比較，利用提升溶液的分散性，使P(VDF-TrFE)分子鏈中的氟(F)原子，可以更有效率的與碳材中的OH基產生氫鍵，藉此提升薄膜具有壓電效果的β晶相含量，使薄膜在應用端上有更高的輸出電壓及在感測元件上有更好的靈敏度。

In recent years, the market size of wearable devices has grown by leaps and bounds. According to market research, the market size of wearable devices will reach 68 billion USD in 2024. Therefore, more and more research related to wearable devices is published. Research on piezoelectric materials has been for decades, But due to the efficiency and useful application,it stayed in the research stage, But in recent years, many studies have shown that the piezoelectric efficiency can be increased by adding nanocomposites, and published related applications such as Seismocardiography (SCG), blood pressure measurement and charging devices. Because the material selection of the wearable device must have certain flexibility. Among them, the piezoelectric polymer P (VDF-TrFE) has both toughness and piezoelectric efficiency. Therefore, P (VDF-TrFE) has become the most suitable material for wearable devices among many piezoelectric materials. In this study,piezoelectric polymer P (VDF-TrFE) film improve the crystallinity and piezoelectric effect of the film by annealing process and poling process and use of nano-carbon materials with different dimensions, including carbon black, carbon nanotubes and graphene, compare the effects of different dimensions of carbon materials and the functional groups on the surface of carbon materials on the crystallinity and piezoelectric effect of P (VDF-TrFE) films. By adding Polymeric Dispersant to improve the dispersibility of carbon nanomaterials the polymer dispersant is synthesized by amide reaction of Styrene Maleic Anhydride copolymer (SMA series) and Polyether monoamine (M1000). Compare with different ratios of nano carbon material and dispersant (10: 1, 5: 1, 1: 1, 1: 5, 1:10), by enhancing the dispersibility of the solution, the F atoms in the molecular chain of P (VDF-TrFE), can more efficiently generate hydrogen bonds with OH- in carbon materials, to increase the content of β crystal phase with piezoelectric effect, the film has a higher output voltage on the application side and better sensitivity on the sensing element.

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