The size of spherulites observed in the poly(butylene succinate-co-adipate) (PBSA) gel was found to be effectively controlled by the careful selection of the types of solvent and the gel preparation temperature. Additionally, the degradation behavior of the PBSA dried-gels with different sizes of spherulites was studied. By using different solvents, such as toluene (TOL), o-dichlorobenzene (o-DCB), and cyclohexanone (CHN), the diameter of the spherulites could be changed from 16.7 μm to 186.2 μm, while the gel preparation temperature was kept constant at 28 °C. The gel preparation temperature was then changed from −50 °C to 28 °C using CHN, and it was found that the diameter of the spherulites changed from 25.2 μm to 186.2 μm. Regarding the degradation behavior, the PBSA dried-gel with relatively smaller spherulites (∼20 μm in diameter) exhibited higher weight loss of over 80% at the immersion time of 6 days, while the PBSA dried-gels with relatively larger spherulites (∼186 μm in diameter) presented lower weight loss of below 30% at the immersion time of 6 days. It was therefore concluded that the degradation rate became lower with the increase in the size of spherulites.

发现通过仔细选择溶剂类型和凝胶制备温度，可以有效地控制在聚（丁二酸丁二酸酯-共己二酸丁二酯）（PBSA）凝胶中观察到的球晶尺寸。另外，研究了具有不同尺寸的球晶的PBSA干凝胶的降解行为。通过使用不同的溶剂，例如甲苯（TOL），邻二氯苯（o-DCB）和环己酮（CHN），球晶的直径可以从16.7μm更改为186.2μm，而凝胶制备温度保持恒定在28°C。然后，使用CHN将凝胶制备温度从-50℃改变为28℃，并且发现球晶的直径从25.2μm改变为186.2μm。关于降解行为，球状相对较小（直径约20μm）的PBSA干凝胶在6天的浸泡时间表现出80％以上的较高重量损失，而球状相对较大的PBSA干凝胶（〜186）直径（μm）在浸泡6天时的重量损失较低，低于30％。因此可以得出结论，随着球晶尺寸的增加，降解率降低。