The goal of this study is to evaluate the effect of different organoclays on the properties of poly(butylene adipate- co -terephthalate) (PBAT)/organoclay systems. PBAT/organoclay nanocomposites containing 2.5, 5.0 and 7.5% of three different commercial organically modified clays (Cloisite ® C10A, C20A and C30B) were prepared as a masterbatch in a laboratory internal mixer, let down to the appropriate concentration in a co-rotating twin-screw extruder, and test specimens were injection molded. Nanocomposites were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), thermogravimetry (TGA) and dynamic mechanical analysis (DMA) as a function of clay identity and content. XRD results showed a significant increase in the interlayer spacing of the clay, suggesting that intercalated structures were obtained with all systems investigated, as confirmed by TEM. Organoclay incorporation into PBAT resulted in lower melt crystallization temperatures compared with the neat polymer, particularly in PBAT/C30B nanocomposites, slightly improved thermal stability, increased stiffness and no changes in the glass transition temperature. Compounding PBAT with up to 7.5% of C10A, C20A or C30B organoclays is an option to improve the performance of PBAT.

中文翻译：

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填料类型对PBAT/有机粘土纳米复合材料性能的影响

本研究的目的是评估不同有机粘土对聚（己二酸丁二醇酯-共对苯二甲酸酯）（PBAT）/有机粘土体系性能的影响。PBAT/有机粘土纳米复合材料含有 2.5%、5.0% 和 7.5% 的三种不同的商业有机改性粘土（Cloisite® C10A、C20A 和 C30B）作为母料在实验室密炼机中制备，在同向旋转双缸中调至适当浓度-螺杆挤出机，并且测试样品被注射成型。纳米复合材料通过 X 射线衍射 (XRD)、透射电子显微镜 (TEM)、差示扫描量热法 (DSC)、热重法 (TGA) 和动态力学分析 (DMA) 表征为粘土特性和含量的函数。XRD 结果表明粘土的层间距显着增加，表明通过 TEM 证实，所有研究的系统都获得了插层结构。与纯聚合物相比，有机粘土掺入 PBAT 导致熔融结晶温度较低，尤其是在 PBAT/C30B 纳米复合材料中，热稳定性略有提高，刚度增加，玻璃化转变温度没有变化。将 PBAT 与高达 7.5% 的 C10A、C20A 或 C30B 有机粘土混合是提高 PBAT 性能的一种选择。