caa a22 4500 46912654X CHVBK 20180323133152.0 cr unu---uuuuu 170328e19920401xx s 000 0 eng 10.1007/BF02697531 doi (NATIONALLICENCE)springer-10.1007/BF02697531 Relaxation time of polymer solutions from rod-climbing height (part 2) [Elektronische Daten] [Hyoung Choi, Hyoung Kim] Relaxation time of the polymer solution from rod-climbing experiment is analyzed in this investigation. For a low deformation rate, the polymer solution can be regarded as a secondorder fluid and rod-climbing constant for the second-order fluid is correlated with the rheological properties of that polymer solution. Climbing constant(β) of polymeric fluid is measured first and then from the correlation between rod-climbing constant and relaxation time of the polymer solution which we have obtained previously, the experimental relaxation time of PIB(polyisobutylene)-PB(polybutene)-kerosene system is obtained. In addition, by analyzing the molecular weight distribution of polymers, we also calculate the relaxation time based on the Muthukumar and Freed theory which was derived by generalizing the effective medium theory of the hydrodynamics of a polymer solution. Relaxation times from the rod-climbing experiment are found to be well correlated with the theoretical relaxation times. Korean Institute of Chemical Engineering, 1992 Choi Hyoung Department of Polymer Science and Engineering, Inha University, Inchon, Korea aut Kim Hyoung Department of Polymer Science and Engineering, Inha University, Inchon, Korea aut Korean Journal of Chemical Engineering Springer-Verlag 9/2(1992-04-01), 74-82 0256-1115 9:2<74 1992 9 11814 https://doi.org/10.1007/BF02697531 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02697531 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Choi Hyoung Department of Polymer Science and Engineering, Inha University, Inchon, Korea aut NATIONALLICENCE 700 1- Kim Hyoung Department of Polymer Science and Engineering, Inha University, Inchon, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer-Verlag 9/2(1992-04-01), 74-82 0256-1115 9:2<74 1992 9 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 468459286 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer