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1968•Bulletin of the Chemical Society of JapanRequires access

Unperturbed Dimension of Poly(butylene oxide)

Masahiro Matsushima, Masaaki Fukatsu, Michio Kurata

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Abstract

Abstract Viscosity and light scattering measurements of poly(butylene oxide) were carried out in various solvents, including a theta solvent, isopropanol. The intrinsic viscosity vs. molecular weight relationships obtained in the range of molecular weight from 2.1×105 to 2.3×106 were: & [η]=3.39×10^-5M_w^0.84 in benzene at 30°C, & [η]=4.08×10^-5M_w^0.79 in methyl ethyl ketone at 30°C, & [η]=8.65×10^-4M_w^0.50 in isopropanol at 29.8°C. The ratio σ between the end-to-end distance of the polymer chain in the unperturbed state and that in the freely rotating state was estimated to be 1.66.

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Abstract Viscosity and light scattering measurements of poly(butylene oxide) were carried out in various solvents, including a theta solvent, isopropanol. The intrinsic viscosity vs. molecular weight relationships obtained in the range of molecular weight from 2.1×105 to 2.3×106 were: & [η]=3.39×10^-5M_w^0.84 in benzene at 30°C, & [η]=4.08×10^-5M_w^0.79 in methyl ethyl ketone at 30°C, & [η]=8.65×10^-4M_w^0.50 in isopropanol at 29.8°C. The ratio σ between the end-to-end distance of the polymer chain in the unperturbed state and that in the freely rotating state was estimated to be 1.66.

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Available abstract

Abstract Viscosity and light scattering measurements of poly(butylene oxide) were carried out in various solvents, including a theta solvent, isopropanol. The intrinsic viscosity vs. molecular weight relationships obtained in the range of molecular weight from 2.1×105 to 2.3×106 were: & [η]=3.39×10^-5M_w^0.84 in benzene at 30°C, & [η]=4.08×10^-5M_w^0.79 in methyl ethyl ketone at 30°C, & [η]=8.65×10^-4M_w^0.50 in isopropanol at 29.8°C. The ratio σ between the end-to-end distance of the polymer chain in the unperturbed state and that in the freely rotating state was estimated to be 1.66.

Key concepts: Chemistry, Dimension (graph theory), Oxide, Polymer chemistry, Chemical engineering, Pure mathematics, Organic chemistry, Mathematics

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