1968
DOI: 10.1002/macp.1968.021170117
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Unperturbed dimensions of polyacrylonitrile

Abstract: The intrinsic viscosities [q] of polyacrylonitrile (PAN) in mixed solvent of ethylene carbonate and water (85 :15, in weight) a t temperatures from 30 to 44OC have been measured to establish the KUHN-MARK-HOUWINK-SAKURADA relation, [q] = KmMa. The samples used in the determination were prepared under different conditions. The FLORY constant K was estimated from viscosity data using three different methods. Method 1, from Km when the exponent a equals 0.50. Method 2, from the plot of [ T ] / M~/~ against M'/z (… Show more

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Cited by 14 publications
(1 citation statement)
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“…The A values calculated from the unperturbed dimensions of the parent homopolymers ("ideal" values) using equation (1) [6, [19][20][21] are shown in Table 3. The observed values of A for this copolymers are smaller than the "ideal" values.…”
Section: Unperturbed Dimensionsmentioning
confidence: 99%
“…The A values calculated from the unperturbed dimensions of the parent homopolymers ("ideal" values) using equation (1) [6, [19][20][21] are shown in Table 3. The observed values of A for this copolymers are smaller than the "ideal" values.…”
Section: Unperturbed Dimensionsmentioning
confidence: 99%