Biodegradable nanocomposites were successfully synthesized using the maleic acid-grafted poly(butylene adipate-co-terephthalate) (g-PBAT) and organically modified layered zinc phenylphosphonate (m-PPZn), containing covalent linkages between g-PBAT and m-PPZn. Differential scanning calorimetry, wide-angle X-ray diffraction (WAXD), and transmission electron microscopy (TEM) were used to determine the crystallization behavior and morphology of g-PBAT/m-PPZn nanocomposites. The isothermal crystallization kinetics of g-PBAT/m-PPZn nanocomposites was determined using the Avrami equation. It was found that the half-time for the crystallization of the neat g-PBAT matrix is larger than that of g-PBAT/m-PPZn nanocomposites. This result suggests that the incorporation of m-PPZn can improve the crystallization rate of nanocomposites. The WAXD and TEM data illustrate that most of the m-PPZn layered materials are partially intercalated or exfoliated in the g-PBAT matrix. As the enzyme, lipase from Pseudomonas sp. was used for the enzymatic degradation tests. The degradation rates of the neatly fabricated g-PBAT copolymers using the heat pressing technique increase in the order of g-PBAT-80 > g-PBAT-50 > g-PBAT-20. The growing degradation rate of g-PBAT-80 is due to the growing amount of the adipate acid group and the increasing chain flexibility of the polymer backbone. Moreover, the increasing loading of m-PPZn enhances the weight loss of nanocomposites, suggesting that the existence of m-PPZn enhances the degradation of g-PBAT copolymers. The degradation rate of the freeze-drying samples containing a highly porous structure is greater than those prepared using the heat pressing technique.

使用马来酸接枝的聚己二酸丁二酯-对苯二甲酸对苯二甲酸酯（g-PBAT）和有机改性的层状苯基膦酸锌（m-PPZn）成功合成了可生物降解的纳米复合材料，该复合物包含g-PBAT和m-PPZn之间的共价键。差示扫描量热法，广角X射线衍射（WAXD）和透射电子显微镜（TEM）用于确定g-PBAT / m-PPZn纳米复合材料的结晶行为和形态。使用Avrami方程确定g-PBAT / m-PPZn纳米复合材料的等温结晶动力学。发现纯的g-PBAT基质结晶的半衰期比g-PBAT / m-PPZn纳米复合材料的半衰期大。该结果表明，m-PPZn的掺入可以提高纳米复合材料的结晶速率。WAXD和TEM数据表明，大多数m-PPZn层状材料在g-PBAT基质中部分嵌入或剥落。作为酶，脂肪酶来自假单胞菌属。用于酶降解测试。使用热压技术，整齐地制造的g-PBAT共聚物的降解速率按g-PBAT-80> g-PBAT-50> g-PBAT-20的顺序增加。g-PBAT-80降解速率的提高是由于己二酸基团数量的增加和聚合物主链链柔性的提高。此外，增加的m-PPZn负载会增加纳米复合材料的失重，这表明m-PPZn的存在会促进g-PBAT共聚物的降解。包含高度多孔结构的冷冻干燥样品的降解速率大于使用热压技术制备的样品。