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Rod‐Climbing characterization of kaolinite suspended polyisobutylene solutions
Author(s) -
Choi Hyoung J.,
Lee Hong J.,
Lim Sung T.,
Jhon Myung S.
Publication year - 1999
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.11436
Subject(s) - rheology , materials science , rheometer , kaolinite , particle (ecology) , viscosity , shear rate , polymer , chemical engineering , composite material , polymer chemistry , geology , oceanography , engineering , metallurgy
Abstract The rod‐climbing constants of kaolinite‐suspended polyisobutylene (PIB) solutions are investigated from rod‐climbing experiments. For a low deformation rate, this particle suspended polymer solution can be regarded as a second‐order fluid, and the rod‐climbing constant for such fluids is correlated with the rheological properties of the particle‐suspended polymer solutions. The rod‐climbing constants for kaolinite suspended PIB solutions were found to decrease with temperature and increase with PIB concentration, molecular weight of PIB, solvent viscosity, and particle concentration. The rheological properties were measured using rotational rheometer, and the shear viscosity and the first normal stress difference of the kaolinite suspended PIB solution show the Boger‐fluid characteristics.