PP recyclates characterization after different samplings and recycling strategies-DSC

PP-recyclates characterization after different sampling and recycling strategies – DSC data Authors: A. Martínez García, A. Ibáñez García, M.A. León CabezasInnovative Materials and Manufacturing Area, AIJU, Avda. de la Industria, 23 03440 Ibi (Alicante), Spain Contact Informationemail: [e-mail]: [phone] This dataset contains raw DSC data of PP-recyclates from different recycling strategies following different sampling strategies. The purpose of this analysis is to evaluate the efficiency of the different recycling strategies and the quality of the resulting recyclates in combination with other analysis techniques. Recycling strategies followed: 1) Purification of PP-rich post-consumer waste using supercritical CO2 (scCO2). scCO2 does not alter particle size or shape. The waste material was subjected to scCO2 treatment in two ways. The first method involved directly treating the flake material, which was subsequently ground. These samples are labelled CO-PP03RE-SC01GR. The second approach aimed to investigate whether cleaning efficiency depends on particle size. The flakes were ground first, and scCO2 was then applied to the particles, resulting in a sample identified as CO-PP03RE-GRSC01. Homogenous powder was obtained in both cases and five samples were analysed following the DSC For the sample preparation, the flakes of the waste were ground using a ring sieve mill (ZM 300, Retsch, Haan, Germany). Data from this approach are given in: PP recyclates after sc-CO2 recycling-DSC.xlsx 2) Purification of PP-rich post-consumer waste using solvent-based CreaSolv® process, developed by Fraunhofer IVV. The solvent-based recycling process results in more homogeneous recyclates by dissolving the entire sample, and selectively precipitating the desired purified polymer, with the potential of removal of unwanted components. The waste material was subjected to solvent-based recycling treatment in two ways. The first method includes additional purification with a solid-liquid separation step, referred to as CO-PP03RE-CS+SL. The second method is without this additional purification, labelled as CO-PP03RE-CS-SL. Homogeneous powder was obtained through solvent-based recycling process and five samples were analysed directly following the parallel plate rheology protocol. Data from this approach are given in: PP recyclates after solvent-based recycling-DSC.xlsx 3) Purification of PP-rich post-consumer waste after upcycling and compounded by mechanical reprocessing.The waste material was compounded after the reformulation with additives to enhance specific properties.The material was subjected to compounding by means of remelting-restabilization, labelled as CO-PP03RE-CO.Homogenous pellets were obtained through compounding recycling process. Data from this approach are given in: PP recyclates after upcycling-DSC.xlsx Reference samples: PP-rich waste flakes were ground using a ring sieve mill to a particles size below 750 µm. Five samples were analyzed. The nomenclature followed is presented in the Table below: Recyclate Nomenclature DescriptionCO-PP03RE-GR PP Recyclate after cryogenic grinding (reference material)CO-PP03RE-CO (Brug) PP Recyclate after compounding with Bruggolen CO-PP03RE-GRSC01 PP Recyclate after cryogenic grinding and scCO2CO-PP03RE-SC01GR PP Recyclate after scCO2 and cryogenic grindingCO-PP03RE-CR-SL PP Recyclate after Creasolv without solid-liquid separationCO-PP03RE-CR+SL PP Recyclate after Creasolv with solid-liquid separation不同取样与回收策略下PP再生材料的表征——差示扫描量热法（DSC, Differential Scanning Calorimetry）数据 作者：A. 马丁内斯·加西亚、A. 伊瓦涅斯·加西亚、M.A. 莱昂·卡贝萨斯 创新材料与制造事业部，AIJU，西班牙阿利坎特省伊维市工业大道23号，邮编03440 联系方式：电子邮箱：[e-mail]；电话：[phone] 本数据集收录了采用不同取样策略、经不同回收策略处理的PP再生材料的原始差示扫描量热法（DSC）数据。 本分析旨在结合其他分析技术，评估不同回收策略的有效性与所得再生材料的品质。 本次研究涉及的回收策略如下： 1) 采用超临界二氧化碳（scCO2, supercritical CO2）纯化富PP消费后废料。scCO2不会改变颗粒的尺寸与形貌。实验采用两种方式对废料进行scCO2处理：第一种为直接对薄片物料进行处理，随后进行研磨，此类样品标记为CO-PP03RE-SC01GR；第二种为探究清洗效率是否与颗粒尺寸相关，即先对薄片进行研磨，再对颗粒进行scCO2处理，所得样品标记为CO-PP03RE-GRSC01。两种方法均得到均质粉末，共制备5份样品用于DSC分析。样品制备环节：采用环式筛分粉碎机（ZM 300，Retsch，德国哈恩）对废料薄片进行研磨。 该方法所得数据收录于《PP recyclates after sc-CO2 recycling-DSC.xlsx》。 2) 采用弗劳恩霍夫IVV研究所（Fraunhofer IVV）开发的溶剂型CreaSolv®工艺纯化富PP消费后废料。该溶剂回收工艺可通过溶解全部样品、选择性析出目标纯化聚合物，实现更均质的再生材料制备，同时可去除有害杂质。实验采用两种方式对废料进行溶剂回收处理：第一种为增加固液分离步骤以实现额外纯化，标记为CO-PP03RE-CS+SL；第二种不增设该额外纯化步骤，标记为CO-PP03RE-CS-SL。通过溶剂回收工艺得到均质粉末，共制备5份样品，直接按照平行板流变学规程进行分析。 该方法所得数据收录于《PP recyclates after solvent-based recycling-DSC.xlsx》。 3) 经升级再造并通过机械复配加工的富PP消费后废料的纯化。将废料经配方重构并添加特定性能增强助剂后进行复配。通过重熔-稳定化工艺进行复配，标记为CO-PP03RE-CO。通过复配回收工艺得到均质颗粒。 该方法所得数据收录于《PP recyclates after upcycling-DSC.xlsx》。 参考样品：采用环式筛分粉碎机将富PP废料薄片研磨至粒径小于750 μm，共制备5份样品用于分析。 本研究采用的命名规则如下表所示： | 再生材料命名 | 描述 | | --- | --- | | CO-PP03RE-GR | 经低温研磨的PP再生材料（参考样品） | | CO-PP03RE-CO (Brug) | 与Bruggolen复配后的PP再生材料 | | CO-PP03RE-GRSC01 | 经低温研磨后再进行scCO2处理的PP再生材料 | | CO-PP03RE-SC01GR | 经scCO2处理后再进行低温研磨的PP再生材料 | | CO-PP03RE-CR-SL | 未进行固液分离的Creasolv处理PP再生材料 | | CO-PP03RE-CR+SL | 经固液分离的Creasolv处理PP再生材料 |