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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：通过热量塑化过程研制豌豆蛋白质生物塑料：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：基于蛋白质的生物塑料是通过可再生自然组成部分获得的材料，其在广泛的目的中呈现出巨大的益处。此外，豌豆蛋白分离物和甘油似乎是一种优异的组合，以创造新的生物塑料由于其奇妙的可加工性和亲水性。这是通过两个阶段的热机械过程实现：混合和注塑。这项工作的目标是通过评估加工阶段对所得最终生物塑料的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它们对蛋白质增塑剂共混物的影响来评估不同的加工参数（混合速度和时间），以及对微观结构的分析以及流变和机械行为。此外，还进行了水吸收试验。结果表明，短而长的​​混合时间和高混合速度（50rpm）导致了异质性。虽然，发现中间混合速度（30rpm）和短混合时间（1和10min）是适合于获得具有良好机械性能的生物塑料。

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