| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for analyzing a composition distribution of a polyolefin sample consisting of two or more kinds of polyolefins, by which a highly precise composition distribution can be obtained by using solvent gradient liquid chromatography (LC).SOLUTION: A method for analyzing composition distribution of a polyolefin sample consisting of two or more kinds of polyolefin includes: a filling step (A) of filling a column with a sample solution containing the polyolefin sample, so as to make the polyolefin sample adsorbed on a stationary phase; and an elution step (B) of eluting the polyolefin sample absorbed on the stationary phase by a solvent of a controlled composition. Preferably, the elution step (B) is executed with a predetermined solvent gradient in a solvent gradient where a solvent to be passed is gradually converted from a poor solvent to a good solvent. |
