以電紡製備高分子奈米機械元件之研究

Abstract

本實驗以PVP溶液為材料，嘗試利用傳統製備高分子奈米纖維之電紡 設備，採用改良之雙管針頭，製備出螺旋狀奈米纖維。本研究之螺旋狀奈米高分子纖維係以同時射出兩種導電度不同之高分子聚合物，利用其電導度不同之原理，於電紡過程中，攜帶較多電荷側之分子間斥力變大，產生之伸長量也較大，因此造成纖維捲曲的情況。藉由調變導電度之大小，可使兩側伸長之比例不同，藉以改變螺旋結構之內徑與外徑。未來希望利用此結構之外型類似機械彈簧之特性，當螺旋纖維撓屈變形時，可將外力及扭矩等能量儲存，作為儲能元件，若利用此具螺旋狀纖維製備高分子薄膜，可預期有較佳的彈性。並有運用於各種微型機器人(micro robots)，微感測器(micro sensers)等微型結構(micro structures)之潛力。

In this thesis, PVP ( Polyvinylpyrrolidone ) was selected as the material, and a modified traditional electrospinning device was arranged to fabricate the helical nanofiber. This device is composed of a side-by-side syringe. Each syringe was filled with marcormolecular compound with different electrical conductivity, the fiber contracts at one side because of the difference of the electricity thus produces fibers of helical shapes. We can control the fiber’s shape by adjusting the electric conductivity of the macromolecular compounds. The helical structural of the nanofibers is similar to the mechanical spring, since the helical structure can store energy such as external force or torsion when it is compressed. The helical structure of nanofiber also have a pontential used to be applyied to the micro structures.