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首页> 外文期刊>Journal of Polymers and the Environment >Development of Pea Protein Bioplastics by a Thermomoulding Process: Effect of the Mixing Stage
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Development of Pea Protein Bioplastics by a Thermomoulding Process: Effect of the Mixing Stage

机译：通过热塑工艺开发豌豆蛋白生物塑料：混合阶段的影响

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摘要

Protein-based bioplastics are materials obtained with renewable natural components that present huge benefits as their technological capacity in a wide range of purposes. Besides, pea protein isolate and glycerol seem to be an excellent combination to create new bioplastics due to their fantastic processability and hydrophilic character. This is achieved by a thermomechanical process of two stages: mixing and injection moulding. The goal of this work is to study the preparation of pea protein-based bioplastics by the evaluation of the influence of the processing stages on the properties of the final bioplastics obtained. These bioplastics were studied evaluating different processing parameters (mixing speed and time) by assessing their influence on the protein-plasticizer blend with the analysis of the microstructure, as well as the rheological and mechanical behaviour. In addition, water uptake tests were also performed. The results showed that short and long mixing times and high mixing speeds (50rpm) led to heterogeneity. While, intermediate mixing speeds (30rpm) and short mixing times (1 and 10min) were found to be suitable to obtain bioplastics with good mechanical properties.
机译：蛋白质基生物塑料是使用可再生天然成分制成的材料，由于其广泛用途的技术能力，它们具有巨大的优势。此外，豌豆蛋白分离物和甘油由于其出色的可加工性和亲水性，似乎是创造新型生物塑料的绝佳组合。这是通过两个阶段的热机械过程实现的：混合和注塑。这项工作的目的是通过评估加工阶段对最终生物塑料性能的影响来研究基于豌豆蛋白的生物塑料的制备。研究了这些生物塑料，通过评估其对蛋白质-增塑剂混合物的影响，并通过微观结构分析以及流变和机械行为，评估了不同的加工参数（混合速度和时间）。另外，还进行了吸水测试。结果表明，短和长的混合时间以及高混合速度（50rpm）会导致异质性。同时，发现中等混合速度（30rpm）和短混合时间（1和10min）适合于获得具有良好机械性能的生物塑料。

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