High-density polyethylene/asphaltene composites: Thermal, mechanical and morphological properties
| Autor: | Mohammad Sirousazar, Zeinab Hosseini-Dastgerdi, Reza Moradkhani |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Polymers and Polymer Composites. 29:1528-1533 |
| ISSN: | 1478-2391 0967-3911 |
| Popis: | In this work, a series of high-density polyethylene (HDPE)/asphaltene composites were fabricated via the melt blending method. The composites were characterized, and the degradability, thermal, and mechanical stabilities of the products were analyzed. TGA results showed that HDPE/asphaltene composites had better thermal properties, e.g. higher degradation temperatures than asphaltene-free pristine HDPE. The high intermolecular interactions between the asphaltene and HDPE resulted in the degradation mechanism break, delaying the decomposition of composites and increasing their thermal stabilities. The results of DSC analysis indicated that the presence of asphaltene induces higher crystallinity and melting temperature in the composite matrix. According to the XRD results, the crystalline size was increased by increasing the asphaltene loading level due to the nucleating effect of asphaltene and the proper interactions developed between the asphaltene particles and HDPE chains. The proper dispersion of asphaltene in the composite matrix was confirmed by SEM images. The obtained results from the hardness analysis indicated higher mechanical stability for the composites, proportional to the content of the incorporated asphaltene to the composite. The results showed that asphaltene can be considered as an appropriate choice to improve the HDPE properties. |
| Databáze: | OpenAIRE |
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