PLOYMER SCIENCE

The Bragg law  

The Bragg law is useful for equation measuring wavelengths and for determining the lattice spacing of crystals. 

Fox equation 

The Flory-Fox equation is a simple empirical formula that relates molecular weight to the glass transition temperature of a polymer system.

Hildebrand equation

The Hildebrand solubility parameter (delta ) provides a numerical estimate of the degree of interaction between materials, and can be a good indication of solubility, particularly for nonpolar materials such as many polymers. Materials with similar values of (delta ) are likely to be miscible.

Carother's  equation 

Carothers equation measures the degree of the polymerization