Two octaisobutyl-polyhedral oligomeric silsesquioxanes (oib-POSS) reinforced biodegradable poly(ε-caprolactone) (PCL) composites were prepared via two different methods, i.e., melt compounding and solution casting, which were named as mPCL/oib-POSS and sPCL/oib-POSS, respectively, in this work. Oib-POSS dispersed finely in both composites; moreover, oib-POSS aggregates were larger in mPCL/oib-POSS than in sPCL/oib-POSS. Despite the different preparation methods, oib-POSS obviously promoted the crystallization of PCL, especially in sPCL/oib-POSS, but did not modify the crystal structure of PCL. The storage moduli of PCL were improved significantly in both composites. PCL/oib-POSS composites with enhanced crystallization behavior and improved dynamic mechanical properties were successfully prepared through both methods; moreover, the solution casting method was more effective than the melt compounding method.

中文翻译：

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不同方法制备的聚（ε-己内酯）/八异丁基-多面体低聚倍半硅氧烷复合材料的结晶行为和动态力学性能

两个octaisobutyl多面体低聚倍半硅氧烷（OIB-POSS）可生物降解的增强的聚（ε -己内酯）（PCL）的复合材料制备通过两种不同的方法，即，熔体混合和溶液浇铸，在这项工作中分别命名为mPCL / oib-POSS和sPCL / oib-POSS。Oib-POSS很好地分散在两种复合材料中；此外，mPCL / oib-POSS中的oib-POSS聚集体比sPCL / oib-POSS中的更大。尽管制备方法不同，但是oib-POSS明显促进了PCL的结晶，特别是在sPCL / oib-POSS中，但没有改变PCL的晶体结构。在两种复合材料中，PCL的储能模量均得到显着改善。通过两种方法均成功制备了具有增强的结晶行为和改善的动态力学性能的PCL / oib-POSS复合材料。此外，溶液浇铸法比熔融复合法更有效。