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首页> 外文期刊>Polymers for advanced technologies >The impact of morphology on thermal properties and aerobic biodegradation of physically compatibilized poly (lactic acid)/co‐plasticized thermoplastic starch blends
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The impact of morphology on thermal properties and aerobic biodegradation of physically compatibilized poly (lactic acid)/co‐plasticized thermoplastic starch blends

机译：形态对物理相容化聚（乳酸）/共塑热纤维淀粉混合物的热性能和有氧生物降解的影响

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>Recently, the use of biodegradable polymers became the applicable solution to reduce the environmental concerns, which are created by plastic wastes as well as restrictions of petroleum‐based synthetic polymers. By this point of view, polylactic acid (PLA) as a biodegradable and bio‐based polymer is resolving both aforementioned issues. While, the high cost of PLA and its slow biodegradation rate make researchers to blend it with a faster one, for instance, thermoplastic starch (TPS). Adding TPS into PLA can influence on the morphological structure, thermal stability, and biodegradability. In this study, the well‐tuned co‐plasticized TPS via sorbitol/glycerol mixture was melt mixed with PLA for achieving the physically compatibilized PLA/TPS blend. Thermal properties and aerobic biodegradation behavior of samples were discussed in detail considering the morphology development in each blend composition. Thermogravimetric analysis of PLA/TPS blends showed the single degradation peaks, which indicated the fine interdependence between 2 phases. The continuity and content of TPS phase were strongly influenced on moisture absorption and biodegradability of PLA/TPS samples. Also, the presence of TPS accelerated the biodegradation rate of PLA/TPS samples.
机译： >最近，使用可生物降解的聚合物成为可靠性的溶液，以减少由塑料废物产生的环境问题以及基于石油的合成聚合物的限制。通过这种观点来看，作为可生物降解和生物基聚合物的聚乳酸（PLA）正在分解上述问题。虽然，PLA的高成本及其缓慢的生物降解率使得研究人员将其混合，例如热塑性淀粉（TPS）更快。将TPS添加到PLA可以对形态结构，热稳定性和生物降解性的影响。在本研究中，通过山梨糖醇/甘油混合物的良好调节的共塑化TPS与PLA混合，以实现物理上相容的PLA / TPS混合物。考虑到每个混合物组合物中的形态发育，详细讨论了样品的热性质和有氧生物降解行为。 PLA / TPS混合物的热重分析显示出单一的降解峰，表明2阶段之间的细相互依存。 TPS相的连续性和含量受到PLA / TPS样品的吸湿性和生物降解性的强烈影响。此外，TPS的存在加速了PLA / TPS样品的生物降解速率。

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