Extensional behavior of rod suspension in dilute polymer solution

Hyejin Han; Chongyoup Kim

Korea-Australia Rheology Journal, Vol.27, No.3, 197-206, August, 2015

DOI10.1007/s13367-015-0020-1 Export Citation

Extensional behavior of rod suspension in dilute polymer solution

Hyejin Han, and Chongyoup Kim^†

Department of Chemical and Biological Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, Republic of Korea

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Extensional viscosity of rod particle suspensions in polymer solutions is studied experimentally. Rod particle suspensions were prepared by dispersing FeOOH rods in polyacrylamide (molecular weight of 5-6 M) solutions in a glycerin-water mixture. The diameter of rod particles was 100 nm and the aspect ratio was 4.3, 8.7 and 15.6. Particle volume fraction was 0.005-0.02. The extensional viscosity was measured by the capillary thinning method using the commercially available CaBER. Under the experimental condition both the polymer solution and particle suspensions are dilute. Particle-particle interaction is neglected in the solutions which are stretched by the extensional flow at the bulk. The result shows that extensional viscosity of the rod suspension in polymer solution decreases with the increase in particle volume fraction. The decrease is ascribed to the change in polymer conformation from the stretched state in the bulk flow to the less stretched state in shear flow developed near the particle to match the no-slip condition at the particle surface.

Keywords:capillary thinning;extensional viscosity;Batchelor theory;polymer conformation;relaxation time

[References]

Baklar M, Wobkenberg PH, Sparrowe D, Goncalves M, McCulloch I, Heeney M, Anthopoulos T, Stingelin N, J. Mater. Chem., 20, 1927 (2010)
Batchelor GK, J. Fluid Mech., 46, 813 (1971)
Bhardwaj A, Miller E, Rothstein JP, J. Rheol., 51(4), 693 (2007)
Bousfield DW, Keunings R, Marrucci G, Denn MM, J. Non-Newton. Fluid Mech., 21, 79 (1986)
Burleson DJ, Penn RL, Langmuir, 22(1), 402 (2006)
Eggers J, Phys. Rev. Lett., 71, 3458 (1993)
Eggers J, Phys. Fluids, 7, 941 (1995)
Eggers J, Rev. Mod. Phys., 69, 865 (1997)
Han H, Kim C, J. Non-Newton. Fluid Mech., 213, 57 (2014)
Han H, Kim C, Korea-Aust. Rheol. J., 27(2), 125 (2015)
Harlen OG, Koch DL, Phys. Fluids, 4, 1070 (1992)
Kumar S, Annu. Rev. Fluid Mech., 47, 67 (2015)
Le Meins JF, Moldenaers P, Mewis J, Rheol. Acta, 42(1-2), 184 (2003)
Lok KP, Ober CK, Can. J. Chem., 63, 209 (1985)
McKinley GH, Ann. Rheol. Rev., 1 (2005)
Miller E, Clasen C, Rothstein JP, Rheol. Acta, 48(6), 625 (2009)
Papageorgiou DT, Phys. Fluids, 7, 1529 (1995)
Penn RL, Erbs JJ, Gulliver DM, J. Cryst. Growth, 293(1), 1 (2006)
Petrie CJS, J. Non-Newton. Fluid Mech., 87(2-3), 369 (1999)
Powell RL, J. Stat. Phys., 62, 1073 (1991)
Rodd LE, Scott TP, Cooper-White JJ, McKinley GH, Appl. Rheol., 15, 12 (2005)
Rubinstein M, Colby R, 2003, Polymers Physics, Oxford University Press, Oxford.
Solomon MJ, Spicer PT, Soft Matter, 6, 1391 (2010)
Vu TA, Reagan MM, Legg B, De Yoreo JJ, Banfield JF, Zhang H, Cryst. Eng. Comm., 16, 1466 (2014)
Whitesides GM, Small, 1, 172 (2005)
Yoo H, Kim C, Rheol. Acta, 52(4), 313 (2013)

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[2] Batchelor GK, J. Fluid Mech., 46, 813 (1971)

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[4] Bousfield DW, Keunings R, Marrucci G, Denn MM, J. Non-Newton. Fluid Mech., 21, 79 (1986)

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