Method for determining branch distribution of polymer.

摘要

The branch distribution of a crystalline polymer is determined by melting the polymer at a temperature sufficiently higher than the melting point thereof, then cooling the melted polymer to room temperature in such a manner that isothermal crystallization of the polymer is allowed to take placed stepwise at intervals of 3 DEG C or higher at least from near the upper limit of the melting point of the polymer, then raising the temperature to melt the crystals and determining the branch distribution from the melt behavior, using a thermal analyzer.