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INVESTIGATION ON THE PROPERTIES OF THERMOPLASTIC ELASTOMERS (TPEs) BASED ON BLENDS OF RECYCLE POLYETHYLENE (rPE) I ETHYLENE-PROPYLENE-DIENE TERPOL YMER (EPDM)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wei, Woon Hon Meng, Kian |
| Copyright Year | 2016 |
| Abstract | Recycle polyethylene (rPE) was used to prepare thermoplastic elastomer (TPE) by incorporating it with ethylene propylene diene terpolymer (EPDM). A similar series of blends were also formulated by using virgin polyethylene (vPE). All the blends were prepared by using a Haake Rheomix at 180°C and 50 rpm Further studies were done on the effect of partial replacement of vPE with rPE in vPE/rPEJEPDM blends at a fixed 70:30 blend ratio of plastics (vPE + rPE) and EPDM. Besides, the effect of dynamic vulcanization (sl!lfur) and fillers loading (carbon black, silica and calcium carbonate) were performed separately based on vPEJrPEJEPDM (40/30/30) blends. The results indicated that at a similar EPDM content, rPEJEPDM blends have higher tensile strength, Young's modulus, stabilization torque and thermal stability but lower elongation at break than vPEJEPDM blends. Swelling study reveals that rPEJEPDM blends have better oil and toluene resistance than vPElEPDM blends. Scanning electron microscopy (SEM) examination of the tensile fracture surface of rPEJEPDM blends indicates that higher energy is needed· to cause catastrophic failure compare to vPEJEPDM blends. The partial replacement of vPE with rPE resulted improvement in the tensile strength, Young's modulus and swelling resistance with an increase in the stabilization torque of the vPEJrPEJEPDM blends. The presence of fillers, coloring agents and other materials in rPE is believed responsible for the above observation. The effect of dynamic vulcanization on vPElrPElEPDM blends shows an improvement in the tensile strength, Young's modulus and stabilization torque. This observation is due to the increase in crosslink density, which was evident from the significant reduction in swelling index and swelling percentage. The increase in filler loading of carbon black and silica has improved the tensile strength, Young's modulus and thermal stability of vPEfrPEfEPDM blends with a concurrent decrease in elongation at break. However, a positive trend was observed for calcium carbonate except for Young's modulus and thermal stability. CHAPTER |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://eprints.usm.my/31428/1/WOON_HON_WEI.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
