The objective of this research was to investigate thermal stability and dynamic mechanical behavior of Exfoliated graphite nanoplatelets (xGnP TM)-Linear Low- Density Poly Ethylene (LLDPE) nanocomposites with different xGnP loading content. The xGnP-LLDPE nanocomposites were fabricated by solution and melt mixing in various screw rotating systems such as co-, counter-, and modified-corotating. The storage modulus (E′) of the composites at the starting point of -50°C increased as xGnP contents increased. E′ of the nanocomposite with only 7 wt% of xGnP was 2.5 times higher than that of the control LLDPE. Thermal expansion and the coefficient of thermal expansion of xGnP- loaded composites were much lower than those of the control LLDPE in the range of 45-80°C (299.8 × 10-6/ °C) and 85-100°C (365.3 × 10-6/°C). Thermal stability of the composites was also affected by xGnP dispersion in LLDPE matrix. The xGnP-LLDPE nanocomposites by counter-rotating screw system showed higher thermal stability than ones by co-rotating and modified-co- rotating system at 5 wt% and 12 wt% of xGnP. xGnP had a great effect on high thermal stability of xGnP- LLDPE composites to be applied as tube and film for electrical materials.
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Polymers and Plastics
- Materials Chemistry