Biodegradable polymeric composite based on recycled polyurethane and rubber wastes: material for green shoe manufacturing

Q4 Engineering Leather and Footwear Journal Pub Date : 2020-09-30 DOI:10.24264/lfj.20.3.10
L. Alexandrescu, M. Georgescu, M. Sonmez, M. Nițuică
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引用次数: 3

Abstract

This paper presents the process of obtaining biodegradable polymeric composites based on post-consumption thermoplastic polyurethane and post-consumption vulcanized rubber waste, in various ratios (5, 10, 20, 30, 50%), cryogenically ground to min. 100 nm, and maleic anhydride grafted polyethylene as compatibilizer between the two phases. This composite will be formed into a low-density product, with low cost, recovery and reuse of waste, containing post-consumption polymers, and last but not least, biodegradable. The methodology for making the new materials involves the following steps: sorting waste, grinding, functionalization and compounding. These operations are easy to manage and do not involve new equipment. Compounding, the most important operation, will be carried out on a corotating twin-screw extruder-granulator with the possibility to adjust parameters such as temperature and speed depending on the material, having a screw ratio (L/D-35). The tested biodegradable composites were characterized structurally and physico-mechanically. Waste transformation (ground and functionalized) into new value-added products will lead to remarkable improvements in the life cycle of raw materials and the responsible use of this waste, contributing to sustainability, improving eco-efficiency and economic efficiency and reducing the “pressure” of waste on the environment.
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基于回收聚氨酯和橡胶废料的可生物降解聚合物复合材料:绿色鞋制造材料
本文介绍了以不同比例(5,10,20,30,50%)的消费后热塑性聚氨酯和消费后硫化橡胶废料为基础,低温研磨至最小100nm,马来酸酐接枝聚乙烯作为两相相容剂,制备可生物降解聚合物复合材料的过程。这种复合材料将形成低密度产品,成本低,可回收和重复使用废物,含有消费后聚合物,最后但并非最不重要的是,可生物降解。制造新材料的方法包括以下步骤:分拣废物、研磨、功能化和复合。这些操作易于管理,不涉及新设备。配制是最重要的操作,将在同向旋转双螺杆挤出机造粒机上进行,该造粒机可以根据材料调整温度和速度等参数,具有螺杆比(L/D-35)。对测试的可生物降解复合材料进行了结构和物理力学表征。废物转化(研磨和功能化)为新的增值产品将显著改善原材料的生命周期和负责任地使用这些废物,有助于可持续发展,提高生态效率和经济效率,并减轻废物对环境的“压力”。
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来源期刊
Leather and Footwear Journal
Leather and Footwear Journal Engineering-Industrial and Manufacturing Engineering
CiteScore
0.90
自引率
0.00%
发文量
14
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