電場模擬的結果顯示提高針數與增加針距皆會使針底電場強度下降，且兩側電場強度較中間位置大而得到一不均勻之電場分佈，但可藉由調整針長改變針底電場強度而得到較均勻之電場強度分佈。

本研究使用蒸餾水為溶劑，以電紡絲法製備聚乙烯醇纖維，並探討在不同濃度與操作電壓時，Taylor cone、液柱形態、液柱直徑 (dj)及纖維直徑 (df)的變化。研究顯示改變電壓 (V)與黏度 (ηo)對df 及dj 有以下的scaling law 關係：dj~V-0.04、df~V-0.07 、dj~ηo0.13、df~ηo0.53。
經由DSC、WAXD與SAXS分析，於DSC結果中顯示PVA纖維容易吸水且順向性纖維膜熔點較非順性纖維高，逐步升溫回火可改變纖維內晶體結構，研究發現升溫回火過程中，分子鏈會重組而排列成較具規則性之晶體，結晶區厚度持續上升至200 oC開始變薄，纖維膜於升溫回火至熔點後仍可藉由2D SAXS檢測出孔洞之散射峰。
提高針數能有效增加電紡所得纖維產量，增加針距會使所收集的圖樣較為完整。

The electric field stimulation results showed that increasing needle number and needle’s separation would decrease the electric field intensity around the needle end. The electric field intensity at sides was larger than the center and it would generate an asymmetrical electric field distribution. However, we can adjust the needle length to obtain a symmetrical electric field distribution.
Distilled water was used as a solvent to prepare poly(vinyl alcohol) solutions with different concentrations for electrospinning. The effects of applied voltage (V) and solution viscosity (ηo) on the Taylor cone, jet length, jet diameter (dj) and fiber diameter (df) were investigated. The scaling laws among dj ,df and V, ηo were derived to be：dj~V-0.04、df~V-0.07 、dj~ηo0.13、df~ηo0.53.
Wide-angle X-ray diffraction (WAXD), small-angle X-ray scattering (SAXS) and differential scanning calorimeter (DSC) analyses were used to characterize the as-spun fibers, DSC results showed that the PVA fibers were apt to absorb water and the melting temperature of aligned fibers were slightly higher than that of randomly distributed fibers. Step-wise annealing on the as-spun fibers would alter the lamellar structure. During step-wise annealing, the polymer chain would reform to an ordered crystal and the crystal thickness would increase. After heating the fiber mat above the melting temperature, there still existed a zero angle SAXS scattering, attributed to the presence of voids.
Increasing the needle number would effectively raise the fiber yield. Increasing the needle separation would obtain a more complete pattern.

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