Abstract
Two copolymers of M1 and M2 were studied by DSC and SSA. The SSA test was applied to characterized the distribution of methylene sequence length (MSL) in the M1 and M2 copolymers. The butene comonomer contents of M1 and M2 were 4.66 mol% and 4.83 mol%, respectively. The content of butene comonomer of M1 and M2 is low, and the distribution of MSL increases monotonously with that of MSL. The longest MSL of M1 is 195.4, and the mole fraction is 0.96%, which is higher than M2. The influence of MSL and distribution on the crystallinity and Tm is greater than that of the total monomer content, which are different with traditional opinions.
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