Correlation of melt flow index on sonic modulus and thermogravimetry of low density polyethylene

الملخص EN

The ultrasonic pulse-echo technique, thermogravimetry (TG) and its derivative (DTG) were utilized to study the correlation of melt flow-index (MFI) on the mechanical properties and thermal stability of low density polyethylene (LDPE) in nitrogen atmosphere.

Both sonic modulus and decomposition temperature of the material increase continuously with decreasing MFI.

This has been attributed to the increase in number of points of attraction and entanglement between molecules in the material with decreasing MFI.