本研究利用偏光顯微鏡(polarized-light optical microscopy, POM)、掃描式電子顯微鏡(scanning electron microscopy, SEM)、廣角度X光繞射儀(microbeam wide-angle X-ray diffraction, WAXD)以及小角度X光散射儀(microbeam small-angle X-ray scanning, SAXS)，分別探討生物可分解性高分子聚對二氧環己酮(poly(p-dioxanone), PPDO)及左旋聚乳酸(L-(+)-polylactide, PLLA)，加入不定型高分子聚丙烯酸甲酯(poly(methyl acrylate), PMA)、聚乙酸乙烯酯(poly(vinyl acetate), PVAc)或半結晶性高分子聚丁二酸二乙酯(poly(ethylene succinate), PESu)、聚乙烯醇(poly(vinyl alcohol), PVA)所形成之環帶狀球晶形貌、上表面及內部晶板排列。在PPDO中加入不同比例之PVAc及改變結晶溫度(Tc)，初步先以POM觀察形貌，雖有相分離之情形，但不影響整體形貌，故挑選相分離情形較輕微之比例(90/10)且環帶間距較大之Tc = 75 oC樣品進一步分析，以SEM觀察上表面及內部結構，歸納出ridge及valley分別對應垂直及水平的晶板排列。PPDO/PVA混摻系統則以Tc = 65 oC進行SEM之分析，觀察上表面及內部晶板排列結構，ridge處垂直生長之晶板會向左右兩邊偏折並逐漸轉為valley處平行之晶板，且當分枝向外成長時，晶板也會生長出帶有一個角度之側枝。將本研究之PPDO/PVAc、PPDO/PVA，以及本實驗室過去所研究之neat PPDO、PPDO/PESu、PLLA/PMA，利用同步輻射中心之microbeam SAXS及WAXD輔助證明在SEM下所得到的晶板排列之正確性，顯示出晶板排列之不連續性，並推測出合理的生長機制。再將這五個系統進行光反射實驗，得知當環帶規則、整齊且環帶間距較小時，能得到明顯之彩虹結構光。

In this study, we use polarized-light optical microscopy (POM), scanning electron microscopy (SEM), microbeam wide-angle X-ray diffraction (WAXD) and microbeam small-angle X-ray scattering (SAXS) to analyze the biodegradable polymer poly(p-dioxanone) (PPDO) and poly(L-Lactic acid) (PLLA). Add amorphous polymer poly(methyl acrylate) (PMA) and poly(vinyl acetate) (PVAc) or semicrystalline polymer poly(ethylene succinate) (PESu) and poly(vinyl alcohol) (PVA) to observe the ring-banded morphology, top surface, and interior lamellar assembly. In PPDO/PVAc, change the composition and crystallization temperature to make the ring-banded spherulite clear. The sample with the biggest band spacing at Tc = 75 oC. The top surface and the interior lamellar arrangement of the spherulites observe by SEM, and the ridge and valley correspond to the interior horizontal and parallel lamellae, respectively. In PPDO/PVA system, spherulites demonstrate more regular ring bands and obvious branch morphology at Tc = 65 oC. The ridge region is formed by cracks and then bending clockwise to the valley region for flat arrangement. The morphology and lamellae arrangement of neat PPDO, PPDO/PESu and PLLA/PMA systems have been discussed before. Then, using synchrotron microbeam WAXD and SAXS to further confirm results observed by SEM of above five systems, the discontinuity of lamellar arrangement is revealed. When ring bang is more regular and band spacing is smaller, will produce obvious structure color by doing photonic reflection experiment. Finally, combining the top surface and the interior lamellar assembly with POM graphs and photonic reflection results, it shows the individuality and universality between PPDO and PLLA.

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