پديدآورندگان :
Asadi Vahid School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran , Jafari Seyed Hassan School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran , Ali Khonakdar Hossein Department of Polymer Processing, Iran Polymer and Petrochemical Institute,Tehran, Iran , Häuβler Liane Leibniz-Institute of Polymer Research Dresden, Dresden, Germany
كليدواژه :
Crystallization , Poly(ethylene succinate) , Tungstan disufide nanotubes , Nanocomposite
چكيده فارسي :
Biodegradable poly(ethylene succinate) (PES)/inorganic tungstan disufide nanotubes (INT-WS2)nanocomposites were prepared through solution casting method. Crystallization behavior of PES and its nanocomposites was studied with differential scannig calorimetry (DSC) under nonisothermal condition. Effect of cooling rate and INT-WS2 content on nonisothermal melt crystallization as well as cold cystallization was investigated in detail. It was found that crystallization peak temperatures were shifted to higher temperature range by presence of INTWS2and degree of crystallinity was increased particularly at higher cooling rates. The results indicate that the nonisothermal melt crystallization of PES was enhanced by the presence of INTWS2 due to the heterogeneous nucleation effect of nanotubes. Nucleation activity for each concentration was calculated through a method suggested from Dobreva et al. The results of the nucleation activity investigation showed that the nucleation activity was influenced by the nanotube content and the sample loaded with 0.5 wt.% of WS2 exhibited the highest nucleationactivity.
