AbstractThe Q‐factors for ten poly‐1‐olefins from poly‐1‐butene to poly‐1‐octadecene were determined in 1,2,4‐trichlorobenzene at 80°C and 135°C using the universal calibration curve and the elution count‐extended chain length calibration curve constructed by use of polystyrene standards. These experimentally determined Q‐factors were lower than the theoretical ones, except for poly‐1‐butene, at both temperatures, in contrast to those for polyethylene, polypropylene, and poly‐1‐butene. Corrected Q‐factors for poly‐1‐olefins were obtained by correlating apparent Q‐factors with the number of carbon atoms in the monomer for a series of poly‐1‐olefins. By assuming that poly‐1‐olefins in solution exist as quasi‐rod‐shaped polymers rather than random coils, it would be presumed that the apparent extended chain lengths of poly‐1‐olefins experimentally determined are longer than the theoretical ones because of the effects of their long pendent groups which influence the elution positions of poly‐1‐olefins. A molecule of the poly‐1‐olefins having the same theoretical extended chain length of a polystyrene molecule elutes earlier than the polystyrene molecule, meaning the extended chain length of the poly‐1‐olefin molecu
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