scholarly journals Nonisothermal Crystallization Kinetics of Poly(butylene succinate) and Poly(ethylene succinate)

2004 ◽  
Vol 36 (8) ◽  
pp. 642-646 ◽  
Author(s):  
Zhaobin Qiu ◽  
So Fujinami ◽  
Motonori Komura ◽  
Ken Nakajima ◽  
Takayuki Ikehara ◽  
...  
Keyword(s):  
Crystallization Kinetics ◽  
Nonisothermal Crystallization ◽  
Butylene Succinate ◽  
Nonisothermal Crystallization Kinetics ◽  
Poly Ethylene ◽  
Kinetics Of

Nonisothermal Crystallization Kinetics of Poly(ethylene terephthalate) Nanocomposites

2008 ◽  
Vol 8 (4) ◽  
pp. 1812-1822 ◽  
Author(s):  
Jayita Bandyopadhyay ◽  
Suprakas Sinha Ray ◽  
Mosto Bousmina
Keyword(s):  
Crystallization Kinetics ◽  
Isothermal Crystallization ◽  
Ethylene Terephthalate ◽  
Ozawa Method ◽  
Scanning Calorimetry ◽  
Nonisothermal Crystallization ◽  
Poly Ethylene Terephthalate ◽  
Nonisothermal Crystallization Kinetics ◽  
Poly Ethylene ◽  
Kinetics Of

This article reports the nonisothermal crystallization kinetics of poly(ethylene terephthalate) (PET) nanocomposites. The non-isothermal crystallization behaviors of PET and the nanocomposite samples are studied by differential scanning calorimetry (DSC). Various models, namely the Avrami method, the Ozawa method, and the combined Avrami-Ozawa method, are applied to describe the kinetics of the non-isothermal crystallization. The combined Avrami and Ozawa models proposed by Liu and Mo also fit with the experimental data. Different kinetic parameters determined from these models prove that in nanocomposite samples intercalated silicate particles are efficient to start crystallization earlier by nucleation, however, the crystal growth decrease in nanocomposites due to the intercalation of polymer chains in the silicate galleries. Polarized optical microscopy (POM) observations also support the DSCresults. The activation energies for crystallization has been estimated on the basis of three models such as Augis–Bennett, Kissinger and Takhor methods follow the trend PET/2C20A<PET/1.3C20A<PET, indicating incorporation of organoclay enhance the crystallization by offering large surface area.

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