AbstractSeveral poly‐1‐hexene samples were prepared using different Ziegler‐Natta catalysts, and their solubilities in dense carbon dioxide (CO2) were studied. Despite the varied molecular weight distributions (MWD) in the polymers, a surprising correlation was found between intrinsic viscosity and dense CO2solubility. Due to the ability of dense CO2to extract low‐molecular weight fractions preferentially, it is recommended that narrow MWD polymers be used, as far as possible, for dense CO2solubility determi
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