This study aims to investigate the effect of abiotic treatment (accelerated weathering) of cobalt stearate (CoSt) filled polypropylene (PP) composite films on their biodegradability. The PP composite films, after abiotic treatment, were characterized by different techniques and the results were compared with those of untreated films. After biodegradation (biotic treatment) of abiotically treated composite PP films, the degradation intermediates were evaluated for their ecotoxicological impact. The presence of oxygen products after degradation of composite PP by abiotic treatment was confirmed by FTIR. The carbonyl index of abiotically treated composite films was improved with CoSt loading and with the time of abiotic treatment. After abiotic treatment, the thermal stability of the modified PP sample decreased as shown by thermogravimetric analysis (TGA). The crystallinity of CoSt filled PP decreased with increase in CoSt, as revealed by DSC and XRD, which led to enhanced degradation of PP. The highest biodegradation of abiotically treated composite PP films was shown to be 36.42% having 2 phr CoSt in it. SEM results of biotically treated films also showed erosion, several small pits and increased roughness on the modified PP films. The overall results indicate that the addition of CoSt and abiotic treatment significantly enhanced the biodegradation of PP. Eco-toxicity tests of the degraded material, namely microbial test, plant growth test, and earthworm acute-toxicity test demonstrated that the degradation intermediates were nontoxic. Hence, CoSt filled PP has high industrial potential to make biodegradable flexible packaging.

这项研究旨在调查硬脂酸钴（CoSt）填充的聚丙烯（PP）复合膜的非生物处理（加速风化）对其生物降解性的影响。非生物处理后的PP复合膜的表征采用不同的技术，并将结果与​​未处理的膜进行比较。经过非生物处理的复合PP薄膜的生物降解（生物处理）后，评估了降解中间体的生态毒理学影响。FTIR证实了通过非生物处理降解复合PP后氧产物的存在。非生物处理的复合膜的羰基指数随CoSt负载和非生物处理时间的延长而提高。经过非生物治疗后，热重分析（TGA）显示，改性PP样品的热稳定性降低。DSC和XRD表明，CoSt填充的PP的结晶度随CoSt的增加而降低，这导致PP降解增强。经非生物处理的复合PP薄膜的最高生物降解度为36.42％，其中含有2phr CoSt。经生物处理的薄膜的SEM结果也显示出改性PP薄膜的腐蚀，几个小凹坑和粗糙度增加。总体结果表明，添加CoSt和非生物处理显着增强了PP的生物降解。降解材料的生态毒性测试，即微生物测试，植物生长测试和worm急性毒性测试表明，降解中间体是无毒的。因此，