Degradation Effect of Different Environments on Characteristics of Calcium Carbonate Reinforced Polyethylene

Authors : Alpay Tamer ERTÜRK

Pages : 489-500

View : 15 | Download : 13

Publication Date : 2017-12-11

Article Type : Research Paper

Abstract :High-density polyethylene insert ignore into journalissuearticles values(HDPE); is a thermoplastic made from petroleum. Deterioration of HDPE materials takes long time due to high molecular mass. In this study, neat HDPE and 5-50% calcium carbonate insert ignore into journalissuearticles values(CaCO3); reinforced HDPE materials were exposed to different environments for aging. Aging was done in pure water, mineral oil, conventional unleaded gasoline, ammonium hydroxide insert ignore into journalissuearticles values(NH4OH); and marine conditions. Exposing time of the samples under different liquid medium has been planned for 2, 4 and 6 month periods. After realization of the exposing periods, TMA insert ignore into journalissuearticles values(thermomechanical analysis);, MFI insert ignore into journalissuearticles values(melt flow index);, SEM insert ignore into journalissuearticles values(scanning electron microscope); analysis were performed. Degradation effect of different aging conditions on characteristics of different weight rate calcium carbonate reinforced polyethylene was investigated. The MFI test results showed that MFI increases with higher calcium carbonate rates. Beside this, TMA test results showed that the glass transition temperature insert ignore into journalissuearticles values(Tg); decreases with higher calcium carbonate rates. Morphological investigation was done by scanning electron microscope insert ignore into journalissuearticles values(SEM);.
Keywords : HDPE, Calcium Carbonate, Environmental Degradation