Effects of Multiple Recycling on the Structure and Morphology of SEBS/PP Composites
| Autor: | Chung-Hyeon Kim, Myoung-Hwan Park, Jung-Keun Kim |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Polypropylene
010407 polymers Materials science Thermal decomposition 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Styrene chemistry.chemical_compound chemistry Rheology Ultimate tensile strength Copolymer Composite material 0210 nano-technology Melt flow index Tensile testing |
| Zdroj: | Bulletin of the Korean Chemical Society. 37:820-825 |
| ISSN: | 1229-5949 |
| DOI: | 10.1002/bkcs.10776 |
| Popis: | A study of the chemical, mechanical, rheological, and morphological properties of recycled styrene–ethylene–butylene–styrene/polypropylene (SEBS/PP) composites was performed to investigate the viability of the application of these materials as recyclable halogen-free alternatives to plasticized poly(vinyl chloride). The SEBS and PP were initially compounded in a ratio of 3:7 and repeatedly recycled. After over ten rounds of recycling, the SEBS/PP composites exhibited no significant changes either in tensile strength or in tensile elongation. However, a reduction in hardness, decrease in the temperature of the onset of thermal decomposition, and significant increase in their melt flow index (MFI) values were observed. Notably, X-ray scattering measurement and transmission electron microscopy experiments of the SEBS/PP composites indicated that these changes in hardness and MFI originated from morphological changes of the SEBS/PP composites resulting from thermal degradation of the SEBS triblock copolymers that occurred over multiple rounds of recycling. |
| Databáze: | OpenAIRE |
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