Polyethylene fusion parameters

Table 2.3. Parameters governing fusion of linear polyethylene (55)...

Table 2 Parameters Governing Fusion of Linear Polyethylene ...

Virgin and recycled polyethylene terephthalate (PET) was blended with polyether-imide (PEI) in proportions between 0 and 50 percent PEI content and samples were examined by differential scaiming calorimetry and Fourier transform infrared spectroscopy. All blends were completely miscible, as indicated by a single glass transition temperature which is dependent on blend composition. Crystallisation rates of PET were retarded strongly at 20 percent PEI content and above, but degree of crystallinity was easily determined from a linear correlation between a structural parameter measured spectroscopically and enthalpy of fusion. Trans conformer activation energy measurement confirmed the effects of PEI content on crystallisation of PET. 9 refs. 

Densities of amorphous polyethylene and solvent are approximately 0.8 and 1.1 g/cm, respectively. Estimate the heat of fusion of polyethylene and the polymer-solvent interaction parameter. 

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