本研究利用偏光顯微鏡(POM)、電子顯微鏡(SEM)、原子力顯微鏡(AFM)、廣角X光繞射儀(WAXD)及微分掃描熱卡計(DSC)分別探討生物可分解性高分子左式聚乳酸(PLLA)、聚羥基丁酸酯共聚羥基戊酸酯(PHBV)，兩者分別摻合了聚丙二醇己二酸酯(PTA)及聚對位乙烯基酚(PVPh)後的結晶行為。第一部分是PLLA/PTA摻合系統，首先改變組成比例、結晶溫度(Tc)或膜厚以POM進行球晶形貌的初步觀察，而最後選擇50/50的組成比例做進一步的分析，並發現在不同結晶溫度(Tc)會有不同的形貌，主要分為三種：在Tc = 105 °C所產生的ring-banded spherulite (稱之Type 1)；在Tc = 115 °C同時共存的hexagon-shaped spherulite (稱之Type 2)及core-striped spherulite (稱之Type 3)，並記錄三種type的球晶形貌各階段生長情形，接著利用SEM針對剛長出來的球核及最終完全長完的球晶(fully crystallized)做進一步的分析，並探討球晶上表面及內部晶板的排列與推測其生長機制。第二部分為PHBV/PVPh (90/10)摻合系統，同樣以POM初步觀察球晶形貌，發現在一特定的Tc會同時共存三種結晶形貌：right Fermat’s spiral spherulite (稱之Type 1)；left Fermat’s spiral spherulite (稱之Type 2)及concentric ring-banded spherulite (稱之Type 3)，最後再結合SEM及AFM的結果分析三種不同螺旋狀的球晶其球核不同之處與晶板排列的關聯性。透過本研究的鑑定，可以了解球核的圖形會與球晶形貌有著密不可分的關係，且晶板應是以柵狀、不連續的晶板排列而構成，而非傳統觀念的連續性晶板扭轉所組成。

Multiple types of crystalline morphology are presented in biodegradable poly(L-lactic acid) (PLLA) and poly(3-hydroxybutyric acid-co-3-hydroxyvaleric acid) (PHBV), upon blending with poly(trimethylene adipate) (PTA) with 50/50 composition and poly(4-vinyl phenol) (PVPh) with 90/10 composition, respectively.
PLLA/PTA (50/50) blend system shows three different types of spherulites: circularly ringed (Type 1), hexagon-shaped (Type 2) and circularly core-striped (Type 3). Such morphological phenomena originate from three different nuclei geometries. In addition, we also utilize scanning electron microscopy (SEM) to observe the fractured surface in order to explore the inner lamellar arrangement. For all three types of spherulites, the dissected inner lamellar arrangement shares commonality of intersecting at 60-degrees angle in the boundary of transition between different lamellar species.
PHBV/PVPh (90/10) blend system also shows three different types of spherulites: right Fermat’s spiral spherulite (Type 1), left Fermat’s spiral spherulite (Type 2) and concentric ring-banded spherulite (Type 3). We take advantage of SEM and atomic-force microscopy (AFM) to analyze the lamellar arrangement of the center of the spherulites.

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