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- W4200575944 abstract "This paper presents the experimental analysis of conductometric properties of polysaccharide Sodium carboxymethyl cellulose (CMC) of solutions in acetone (A) and dimethylacetamide (DMA). For conductometrical study of solutions of CMC + DMA/A, the electrical conductivity was measured under the influence of increasing particle concentration (1 g/l to 10 g/l) and increasing temperature (25°C to 45°C). The reduced electrical conductivity and the activation energy of reduced electrical conductivity Eσ are calculed. Polysaccharides solutions exhibit a critical concentration c*, separating dilute solutions into semi-dilute solutions. The most important results refer to the activation energy of reduced electrical conductivity found from Arrhenius plots. The dependence of the activation energy on solution concentration and temperature is discussed. The polysaccharide CMC behaviour can be extrapolated from the Flory-Huggins theory by decomposing such as Eσ = (Eσ)d + (Eσ)sd + (Eσ)cri. The dilute solution behaviour of Arrhenius is described by the CMC-DMA/A interaction and represented by the function (Eσ)d. For the semi-dilute solution, behaviour of non-Arrhenius which is described by the interaction between the CMC–CMC and represented by the function (Eσ)sd. The critical solution behaviour is described by the CMC–CMC and CMC–DMA/A interactions and represented by the function (Eσ)cri. Principles that aid one to understand and interpret such results are discussed." @default.
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- W4200575944 date "2021-12-06" @default.
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- W4200575944 title "The properties on a polysaccharide of Sodium carboxymethylcellulose (CMC) in dimethylacetamide + acetone by Conductometric study" @default.
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- W4200575944 doi "https://doi.org/10.1080/00319104.2021.2012776" @default.
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