Determination of the amorphous content of polymers

A method to determine the weight percent of an amorphous fraction in an olefin-based polymer composition, comprising one or more olefin-based polymers;

• said method comprising the following steps:
• a) dissolving the olefin-based polymer composition in organic solvent to form a polymer solution;
• b) injecting at least a portion of the polymer solution onto a support material, and wherein the support material comprises one of the following:
• a) gold particles, b) gold coated particles, c) particles comprising gold, d) particles comprising a coating comprising gold, e) copper particles, f) copper coated particles, g) particles comprising copper, h) particles comprising a coating comprising copper, or i) a combination thereof;
• c) cooling the support material at a rate greater than, or equal to, 0.2° C./min;
• d) increasing the temperature of the support material to elute the polymers of the olefin-based polymer composition;
• e) generating a chromatogram;
• f) determining the peak area of the first elution from its lower integration limit to its upper integration limit;
• g) calculating the amorphous fraction based on the following Equation A below:
• wt % amorphous fraction=PAamorp/PAtotal×100 (Eqn. A);
• wherein PAamorp=peak area of the first elution, and PAtotal=total peak area of the polymers of the olefin-based polymer composition.