Isothermal crystallization kinetics and melting behaviour of PET/ATO nanocomposites prepared by in situ polymerization

2007 ◽  
Vol 43 (8) ◽  
pp. 3177-3186 ◽  
Author(s):  
Xiaolei Chen ◽  
Chunzhong Li ◽  
Wei Shao
Keyword(s):  
Crystallization Kinetics ◽  
Isothermal Crystallization ◽  
In Situ Polymerization ◽  
Melting Behaviour ◽  
Isothermal Crystallization Kinetics

Isothermal Crystallization of Polyethylene/Montmorillonite Nanocomposites Prepared by In Situ Polymerization

2012 ◽  
Vol 271-272 ◽  
pp. 42-45
Author(s):  
Min Li ◽  
Li Guang Xiao ◽  
Hong Kai Zhao
Keyword(s):  
Differential Scanning Calorimetry ◽  
Crystal Growth ◽  
Crystallization Kinetics ◽  
Isothermal Crystallization ◽  
In Situ Polymerization ◽  
Crystallization Rate ◽  
Avrami Exponent ◽  
Scanning Calorimetry ◽  
Montmorillonite Nanocomposites

Polyethylene/montmorillonite (PE/MMT) nanocomposites were prepared by in situ polymerization. The isothermal crystallization of PE/MMT nanocomposites at different MMT concentration (from 0.1 wt % to 1.2 wt %) was investigated by differential scanning calorimetry (DSC). The crystallization kinetics shows that the Avrami exponent of PE/MMT nanocomposites is decreased compared with pure PE, which indicates a decrease in the crystal growth dimension. This is attributed to the stems of PE crystals confined in the MMT layers. The crystallization rates of PE/MMT nanocomposites are faster than those of pure PE. However, when the content of MMT increases from 0.1 wt % to 1.2 wt %, the crystallization rate of PE/MMT nanocomposites is decreased.

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