2002
DOI: 10.1678/rheology.30.95
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Viscoelasticity of Potassium Neutralized Telechelic Poly(ethylene-butylene) Ionomer in Non-polar Solvent

Abstract: Viscosity and viscoelasticity were measured for potassium neutralized telechelic poly(ethylene-butylene) ionomer, CTPEB-K, as well as the original polymer, CTPEB, in a non-polar solvent of decalin in a concentration range from dilute to semidilute regime. CTPEB-K was found to associate with each other even in the dilution limit. With increasing the polymer concentration, CTPEB-K solution showed a rapid increase in viscosity due to the formation of a huge cluster and further increase in the concentration lead t… Show more

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Cited by 8 publications
(5 citation statements)
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References 26 publications
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“…Total increase in η for CTPEB-Ester solutions from C = 1 to 100 wt% is found to be around 3 orders of magnitude, which is attributable to an increase in the segmental friction coefficient with increasing C. As mentioned elsewhere, 40) CTPEB-Ester chains are not entangled even in the bulk state.…”
Section: Viscosity Behavior Above C = 1 Wt%supporting
confidence: 58%
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“…Total increase in η for CTPEB-Ester solutions from C = 1 to 100 wt% is found to be around 3 orders of magnitude, which is attributable to an increase in the segmental friction coefficient with increasing C. As mentioned elsewhere, 40) CTPEB-Ester chains are not entangled even in the bulk state.…”
Section: Viscosity Behavior Above C = 1 Wt%supporting
confidence: 58%
“…CTPEB-Ester was prepared as ethyl carboxylate with the acylchloride method as described elswhere. 40) CTPEB-Al was prepared by complete neutralization of dried CTPEB with stoichiometric amount of aluminium ethoxide. Prescribed amounts of CTPEB and aluminium ethoxide were dissolved in toluene and in a mixture of thionyl chloride and tetrahydrofuran (THF) with a ratio of 5 to 1, respectively.…”
Section: Methodsmentioning
confidence: 99%
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“…The CTPEB used is the same one as previous works; [3][4][5][6][7][8] nominal molecular weight: 1400, and the ratio of ethylene and from FT-IR and viscoelastic measurements that there is no difference between them so that the data only for the melt blended sample are reported below. In this study, mixing ratio of CTPEB/ODA is denoted by mole ratio of -NH 2 and -COOH, assuming that CTPEB is 100 % telechelic.…”
Section: Methodsmentioning
confidence: 99%
“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] It seems well established that telechelic ionomers are aggregated even at very dilute concentration in anhydrous solvent, grow in aggregate size with increasing polymer concentration C and then form weak viscoelastic networks at certain C Ã depending on a kind of metallic ions used followed by development of stronger networks with ion clusters as crosslinking points up to the bulk. Here, adjectives ''weak'' and ''strong'' are only conventionally used to differentiate two networks with that there are large differences in magnitudes of viscosity and plateau modulus characteristic of the viscoelastic network.…”
mentioning
confidence: 99%