Factors A ffecting the Melting Temperature

Sources Kumar, S., Indian Journal of Fiber and Textile Research 16, 52-64, 1991. Morton, W.E., et. al.. Physical Properties of Textile Fibres, Fourth Edition, Woodhead Publishing Limited, 2008. Warner, S.B., Fiber Science, Prentice Hall, 1995. Wiedemmin, H.G., et. al., Thermochimica Acta, 169, 1-13, 1990.  

Thermodynamioally, the equihbrium is the temperature at which the values in the ciystalhne and molten states are the same  

This indicates the of polymer fibers is related to the ratio of the enthalpy change 

A7/ to the entropy change AS upon melting. It must be noted the equilibrium obtained by Equation 17.31 is always higher than the experimentally-measiuod T. However, this equation still is useful since it gives important qualitative insight on the measured of polymer fibers, as discussed below. 

The enthalpy change A/7 is related to the difference in the forces of attraction between polymer chains in the crystalline phase and the forces between those 

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