Antibacterial nanocomposite films of poly(butylene adipate‐co‐terephthalate) (PBAT) incorporated with different weight percentage of octakis(3‐chloropropyl)octasilsesquioxane (chloropropyl functionalized POSS [Cl‐fn‐POSS]) nanofiller were prepared. The mechanical, thermal, morphological, barrier, and antimicrobial properties were examined. The mechanical properties of the nanocomposite films were enhanced by the addition of Cl‐fn‐POSS nanofiller. An optimum filler loading of 3 wt% is identified to be best suited for maximum enhancement in tensile strength (24 MPa for 3 wt% filled PBAT vs 11 MPa for neat PBAT) while a 1 wt% filler loading was adequate to double the tensile strength. The barrier properties (WVTR and oxygen transmission rate) of PBAT was improved by the presence of Cl‐fn‐POSS. A volume of 3 wt% filler loading results in 50% reduction of water permeation and 10% reduction in oxygen transmission. The thermogravimetric analyses of the nanocomposites indicated that the filler enabled the enhancement of thermal stability of PBAT. The nanocomposite films revealed antimicrobial activity with this activity increasing with increasing filler content. PBAT is compostable under suitable conditions and with a low weight percentage of filler that is largely made of silicon dioxide these nanocomposite films can find application as biodegradable food packaging material given their flexibility.

中文翻译：

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PBAT疏水性纳米复合材料与Cl-fn-POSS纳米填料可作为可堆肥食品包装膜

聚的抗菌纳米复合材料薄膜（亚丁基己二酸酯共用octakis（3-氯丙基）八倍半硅氧烷的不同重量百分比并入-terephthalate）（PBAT）（氯丙基官能化POSS [氯离子FN -POSS]）纳米填料制备。检查了机械，热，形态，阻隔和抗菌性能。通过添加Cl- fn增强了纳米复合膜的机械性能‐POSS纳米填料。最佳填充量为3 wt％，被认为最适合最大程度地提高抗拉强度（3 wt％填充的PBAT为24 MPa，纯PBAT为11 MPa），而1 wt％的填充量足以使抗拉强度提高一倍。Cl- fn的存在改善了PBAT的阻隔性能（WVTR和氧气透过率）-POSS。填充量为3 wt％时，水渗透率降低50％，氧气透过率降低10％。纳米复合材料的热重分析表明，填料能够增强PBAT的热稳定性。纳米复合膜显示出抗菌活性，该活性随填料含量的增加而增加。PBAT在合适的条件下可堆肥，并且具有低重量百分比的填充剂，填充剂主要由二氧化硅制成，这些纳米复合膜具有柔韧性，可以用作可生物降解的食品包装材料。