Polymer and Materials Science
Wiley InterScience Backfile Collection 1832-2000
Chemistry and Pharmacology
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
An isotactic polybutene-1 was fractionated, and melting points of several fractions were determined. The fractions were studied by light-scattering and viscosity techniques. The parameters in the Mark-Houwink equation are [η] η 4.73 × 10-5Mw0.80 in heptane at 35°C., [η] = 1.50 × 10-4Mw0.69 in heptane at 60°C., and [η] = 9.49 × 10-5Mw0.73 in decalin at 115°C. The molecular weight range studied was 0.45 × 105 to 0.9 × 106.
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