本研究利用微分掃描熱卡計(DSC)、偏光顯微鏡(POM)、傅立葉轉換紅外光譜儀(FT-IR)、廣角X光繞射儀(WAXD)以及小角度X光散射儀(SAXS)來探討聚己二酸二丁酯(Poly(1,4-butylene adipate), PBA)與不定型高分子(Poly(benzyl methacrylate), PBzMA、Poly(phenyl methacrylate), PPhMA)摻合後，個別摻合系統的相容性、結晶動力、多晶態和球晶型態。另一方面，在PEA環狀球晶的探討上，將利用POM、DSC、 FT-IR、WAXD、液態核磁共振儀(liquid-state NMR)和掃描式電子顯微鏡(SEM)來做分析。
由PBA/PBzMA和PBA/PPhMA於各組成下皆呈現單一玻璃轉移溫度，且在OM觀察下均呈現均相相型態的結果，可知此兩摻合系統皆為相容系統。而在球晶成長速率方面，相較於neat PBA，加入不定型高分子的摻合系統，球晶成長速率皆會受到抑制，並會隨著不定型高分子含量增加而遞減，其中PPhMA的Tg和分子量皆比PBzMA來的高，所以使得球晶成長速率下降程度也較大。此外，由於晶體成長速率會受到不定型高分子的加入而下降，因此使PBA晶體延遲形成動力學穩定之form，而較喜愛形成熱力學穩定之form。
在球晶型態上，PBA/PBzMA摻合系統中，PBzMA的加入會使得form PBA由環狀消光環轉變為ringless的型態，然而對於單一晶態的球晶(form和form)，其球晶型態卻不會有太大影響。而在PBA/PPhMA摻合系統中則可發現PPhMA的加入同樣會使得form PBA由環狀消光環轉變為ringless的結構，不同的是PPhMA還會使form PBA的球晶型態由葉片狀結構轉變為zig-zag結構，並且環距會隨著PPhMA的含量增加而減小。由這兩個摻合系統的結果可以得知，環狀消光環的形成與晶態並無絕對關係。
在第二部分，本研究利用蒸氣蝕刻和塊材斷裂面之觀察來探討聚己二酸二乙酯(Poly(ethylene adipate), PEA)環狀消光環之形成機制。然而在蝕刻方面，由於蝕刻液會和PEA產生反應，因此無法由此部分獲得有關環狀消光環結構的資訊。另外在塊材斷裂面之觀察上，可發現PEA環狀消光環的內部結構並非是由lamellar twisting所構成的，而是透過類似洋蔥般的殼層狀結構一層層向外堆疊，且層與層間並無連續成長的現象，此外每一層狀結構內的晶板排列方向會隨球晶成長而改變，也因此會形成valley和ridge交替成長之環狀消光環結構。

Miscibility, kinetic analysis, polymorphism and spherulite morphology of poly(1,4-butylene adipate) (PBA) in blends with poly(benzyl methacrylate) (PBzMA) and poly(phenyl methacrylate) (PPhMA) were investigated by differential scanning calorimeter (DSC), polarized optical microscopy (POM), Fourier-transform infrared spectroscopy (FT-IR), wide-angle X-ray diffraction (WAXD), and small angle X-ray scattering (SAXS). On the other hand, the ring-banded spherulites of poly(ethylene adipate) (PEA) were investigated by POM, DSC, FT-IR, WAXD, liquid-state nuclear magnetic resonance (liquid-state NMR) and scanning electron microscope (SEM). DSC thermal analysis and OM characterization proves that PBA is miscible with PBzMA and PPhMA. It was observed that increasing amorphous polymer content decreases PBA growth rate. In addition, the depression of growth rate in PBA/PPhMA blends is higher than PBA/PBzMA blends, due to the higher glass transition temperature and molecular weight of PPhMA. The depression of PBA growth rate in blends retards the formation of kinetically stable form crystal and favors the formation of form crystal of PBA. In PBA/PBzMA blends, the spherulite morphology ofform PBA changes from ring band to ringless after the addition of PBzMA. However, the spherulite morphology of single crystal type (form and form) remains the same. On the other hand, the spherulite morphology ofform PBA is also changed to ringless in PBA/PPhMA blends. In contrast withform crystal of PBA in PBA/PBzMA, the spherulite morphology ofform PBA changes from leaf-like structure to zig-zag after the addition of PPhMA, and the ring spacing decreased with increasing PPhMA. From the results, it can be concluded that the formation of ring-banded spherulites has no relation with crystal type.
In the second part, the growth mechanism of ring-banded PEA is presented. Two methods are used to investigate the ring band formation of the samples. Vapor etching technique is used to observe the surface of thin film, whereas no etching used for fractured surface. Afer vapor etching, no information about ring-banded spherulite formation mechanism can be provided due to the reaction occurring between PEA and etching solution (methylamine). The observation in the fractured surface of bulk implies that the ring-banded structure was made by onion-like shell structure instead of lamellar twisting, and there was no continuous growth between the layers. In addition, the lamellae direction arrangement will change in alternating way with spherulite growth, thus ring-banded structure could be formed.

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