セルロース誘導体の非ニュートン流動および法線応力効果 : 高分子のレオロジー

概要

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Non-Newtonian flow and normal stress phenomena are studied with solutions of cellulose derivatives as an example of crystalline polymers, with varying solvent, concentration, temperature and molecular weight. Four combinations of polymer and solvent are studied, cellulose nitratediethyl phthalate, -diacetine, -n-buthyl acetate, and methyl cellulose-water, of which the first two are examples of rather poor solvent, the third of very good solvent, and the last of systems showing the lower consolute temperature. The time-temperature reduction which is commonly used in the description of linear viscoelasticity cannot be well applied to these cases of cellulose derivatives, especially in the region of high rate of shear where non-Newtonian effect is prominent. This is to be compared with the fact that in the case of polystyrene, the reduction was applicable over very wide range of rate of shear.
社団法人日本材料学会の論文
1963-05-15