Rentaro Kanamori, Shuya Watanabe, Mohamed Hussien, Yoshifumi Yamagata, Keisuke Miyamoto, Mika Kawai, Tetsu Mitsumata
Further investigation was carried out into the mechanism underlying the changes in electric resistance in an aqueous solution of poly(sodium acrylate) induced by a vigorous flow, as we had previously observed. The change in resistance increased with concentration and showed a broad peak at a NaPAA concentration of approximately 2 × 10-3 wt%, which was close to the entanglement concentration (1.2 × 10-3 wt%). The change in resistance of the NaPAA solution increased with increasing frequency and tended to reach a plateau above approximately 3 × 103 Hz. The absolute value of the change in resistance due to the flow could be quantitatively explained by the decrease in the polymer concentration.