Morreale Marco, Baiamonte Marilena, La Mantia Francesco Paolo
Department of Engineering and Architecture, Kore University of Enna, Cittadella Universitaria, 94100 Enna, Italy.
National Interuniversity Consortium of Materials Science and Technology (INSTM), Via Giusti 9, 50121 Florence, Italy.
Polymers (Basel). 2024 Nov 27;16(23):3306. doi: 10.3390/polym16233306.
Over the last few years, the interest in biodegradable polymers has been increasing for several reasons, mainly because of the concerns about environmental protection and the reduction of emissions, especially those related to non-renewable fossil-based resources. Therefore, special attention has increased for the development of environment-friendly polymers such as biodegradable/compostable polymers, especially when they come from renewable resources, since this would help in further reducing energy consumption during their life cycle, as well as the overall environmental impact. Thus, every biopolymer should be accurately investigated in terms of its processability and main technological properties in order to find the most suitable applications. In this work, a starch-derived MaterBi sample was characterized from the rheological and mechanical point of view, with particular focus on its ability to be processed under non-isothermal elongational flow. The role of processing parameters, such as the temperature and humidity content, was investigated, and a significant influence was found from the processing temperature. Fiber spinning was also performed, finding a good spinnability of the extrudates; in this context, the influence of the draw ratio was investigated as well, with significant effects on the main mechanical properties of the fibers.
在过去几年中，由于多种原因，人们对可生物降解聚合物的兴趣不断增加，主要是因为对环境保护和减少排放的关注，特别是与不可再生的化石基资源相关的排放。因此，对环境友好型聚合物（如可生物降解/可堆肥聚合物）的开发给予了特别关注，尤其是当它们来自可再生资源时，因为这将有助于在其生命周期内进一步降低能源消耗以及整体环境影响。因此，每种生物聚合物都应在其加工性能和主要技术性能方面进行准确研究，以找到最合适的应用。在这项工作中，从流变学和力学角度对淀粉基MaterBi样品进行了表征，特别关注其在非等温拉伸流动下的加工能力。研究了加工参数（如温度和湿度含量）的作用，发现加工温度有显著影响。还进行了纤维纺丝，发现挤出物具有良好的可纺性；在此背景下，还研究了拉伸比的影响，其对纤维的主要力学性能有显著影响。
