Abstract
In this study, the effects of adding silica nanoparticles to PVA/CuNW suspensions were investigated rheologically, in particular, by small and large amplitude oscillatory shear (SAOS and LAOS) test. Interesting, the SAOS test showed the complex viscosities of CuNW/silica based PVA matrix were smaller than those of PVA/CuNW without silica. These phenomena show that nano-sized silica affects the dispersion of CuNW in aqueous PVA, which suggests small particles can prevent CuNW aggregation. Nonlinearity (third relative intensity ≡ I 3/1) was calculated from LAOS test results using Fourier Transform rheology (FT-rheology) and nonlinear linear viscoelastic ratio (NLR) value was calculated using the nonlinear parameter Q and complex modulus G*. Nonlinearity (I 3/1) results showed more CuNW aggregation in PVA/CuNW without silica than in PVA/CuNW with silica. NLR (= [Q 0(ϕ)/Q 0(0)]/[G*(ϕ)/G*(0)]) results revealed an optimum concentration ratio of silica to CuNW to achieve a well-dispersed state. Degree of dispersion was assessed through the simple optical method. SAOS and LAOS test, and dried film morphologies showed nano-sized silica can improve CuNW dispersion in aqueous PVA solutions.
Similar content being viewed by others
References
Cheng, Y., S. Wang, R. Wang, J. Sun, and L. Gao, 2014, Copper nanowire based transparent conductive films with high stability and superior stretchability, J. Mater. Chem. C 2, 5309–5316.
De, S., P.J. King, M. Lotya, A. O'Neill, E.M. Doherty, Y. Hernandez, G.S. Duesberg, and J.N. Coleman, 2010, Flexible, transparent, conducting films of randomly stacked graphene from surfactant-stabilized, oxide-free graphene dispersions, Small 6, 458–464.
Deepak, F.L., P. Saldanha, S.R.C. Vivekchand, and A. Govindaraj, 2006, A study of the dispersions of metal oxide nanowires in polar solvents, Chem. Phys. Lett. 417, 535–539.
Einstein, A., 1905, Eine neue bestimmung der moleküldimensionen, Annu. Phys.-Berlin 324, 289–306.
Ferry, J.D., 1980, Viscoelastic Properties of Polymers, 3rd ed., Wiley, New York.
Finch, C.A., 1992, Polyvinyl Alcohol: Developments, 2nd ed., Wiley, Chichester.
Gao, H., J. He, R. Yang, and L. Yang, 2010a, Characteristic rheological features of high concentration PVA solutions in water with different degrees of polymerization, J. Appl. Polym. Sci. 116, 2734–2741.
Gao, H.W., R.J. Yang, J.Y. He, and L. Yang, 2010b, Rheological behaviors of PVA/H2O solutions of high-polymer concentration, J. Appl. Polym. Sci. 116, 1459–1466.
Gelves, G.A., B. Lin, J.A. Haber, and U. Sundararaj, 2008, Enhancing dispersion of copper nanowires in melt-mixed polystyrene composites, J. Polym. Sci. Pt. B-Polym. Phys. 46, 2064–2078.
Gelves, G.A., B. Lin, U. Sundararaj, and J.A. Haber, 2006, Low electrical percolation threshold of silver and copper nanowires in polystyrene composites, Adv. Funct. Mater. 16, 2423–2430.
Gondret P. and L. Petit, 1997, Dynamic viscosity of macroscopic suspensions of bimodal sized solid spheres, J. Rheol. 41, 1261–1274.
Guo, Y.G., J.S. Hu, H.P. Liang, L.J. Wan, and C.L. Bai, 2003, Highly dispersed metal nanoparticles in porous anodic alumina films prepared by a breathing process of polyacrylamide hydrogel, Chem. Mater. 15, 4332–4336.
Hyun, K. and M. Wilhelm, 2009, Establishing a new mechanical nonlinear coefficient Q from FT-Rheology: First investigation of entangled linear and comb polymer model systems, Macromolecules 42, 411–422.
Hyun, K., H.T. Lim, and K.H. Ahn, 2012, Nonlinear response of polypropylene (PP)/Clay nanocomposites under dynamic oscillatory shear flow, Korea-Aust. Rheol. J. 24, 113–120.
Hyun, K., J.G. Nam, M. Wilhelm, K.H. Ahn, and S.J. Lee, 2003, Nonlinear response of complex fluids under LAOS (large amplitude oscillatory shear) flow, Korea-Aust. Rheol. J. 15, 97–105.
Hyun, K., K.H. Ahn, S.J. Lee, M. Sugimoto, and K. Koyama, 2006, Degree of branching of polypropylene measured from Fourier-transform rheology, Rheol. Acta 46, 123–129.
Hyun, K., M. Wilhelm, C.O. Klein, K.S. Cho, J.G. Nam, K.H. Ahn, S.J. Lee, R.H. Ewoldt, and G.H. McKinley, 2011, A review of nonlinear oscillatory shear tests: Analysis and application of large amplitude oscillatory shear (LAOS), Prog. Polym. Sci. 36, 1697–1753.
Hyun, K., W. Kim, S.J. Park, and M. Wilhelm, 2013, Numerical simulation results of the nonlinear coefficient Q from FT-Rheology using a single mode pom-pom model, J. Rheol. 57, 1–25.
Ishida, H. and S. Rimdusit, 1998, Very high thermal conductivity obtained by boron nitride-filled polybenzoxazine, Thermochim. Acta 320, 177–186.
Islam, S.N. and M.S. Alam, 2011, Characterization of dispersion properties of silicon nanowire considering different core geometry, TENCON 2011–2011 IEEE Region 10 Conference, Bali, Indonesia, 638–641.
Kallus, S., N. Willenbacher, S. Kirsch, D. Distler, T. Neidhöfer, M. Wilhelm, and H.W. Spiess, 2001, Characterization of polymer dispersions by Fourier transform rheology, Rheol. Acta 40, 552–559.
Kang, M.H., H.Y. Yeom, H.Y. Na, and S.J. Lee, 2013, Comparative study of physical dispersion method on properties of polystyrene/multi-walled carbon nanotube nanocomposites, Polym. Kor. 37, 526–532.
Kim, H., K. Hyun, D.J. Kim, and K.S. Cho, 2006, Comparison of interpretation methods for large amplitude oscillatory shear response, Korea-Aust. Rheol. J. 18, 91–98.
Krieger, I.M. and T.J. Dougherty, 1959, A mechanism for non-Newtonian flow in suspensions of rigid spheres, Trans. Soc. Rheol. 3, 137–152.
Larson, R.G., 1999, The Structure and Rheology of Complex Fluids, Oxford University press, New York.
Leblanc J.L., 2008, Large amplitude oscillatory shear experiments to investigate the nonlinear viscoelastic properties of highly loaded carbon black rubber compounds without curatives, J. Appl. Polym. Sci. 109, 1271–1293.
Leblanc, J.L and G. Nijman, 2009, Engineering performance and material viscoelastic analyses along a compounding line for silica-based compounds, part 2: Nonlinear viscoelastic analysis, J. Appl. Polym. Sci. 112, 1128–1141.
Lee, J., P. Lee, H.B. Lee, S. Hong, I. Lee, J. Yeo, S.S. Lee, T.S. Kim, D. Lee, and S.H. Ko, 2013, Room-temperature nanosoldering of a very long metal nanowire network by conductingpolymer-assisted joining for a flexible touch-panel application, Adv. Funct. Mater. 23, 4171–4176.
Lee, J., S.J. Lee, K.H. Ahn, and S.J. Lee, 2015a, Bimodal colloid gels of highly size-asymmetric particles, Phys. Rev. E 92, 012313.
Lee, Y.K., J. Nam, K. Hyun, K.H. Ahn, and S.J. Lee, 2015b, Rheology and microstructure of non-Brownian suspensions in the liquid and crystal coexistence region: Strain stiffening in large amplitude oscillatory shear, Soft Matter 11, 4061–4074.
Lim, H.T., K.H. Ahn, J.S. Hong, and K. Hyun, 2013, Nonlinear viscoelasticity of polymer nanocomposites under large amplitude oscillatory shear flow, J. Rheol. 57, 767–789.
Morrison, F.A., 2001, Understanding Rheology, Oxford University press, New York.
Nam, S., H.W. Cho, S. Lim, D. Kim, H. Kim, and B.J. Sung, 2012, Enhancement of electrical and thermomechanical properties of silver nanowire composites by the introduction of nonconductive nanoparticles: Experiment and simulation, ACS Nano 7, 851–856.
Nam, S., H.W. Cho, T. Kim, D. Kim, B.J. Sung, S. Lim, and H. Kim, 2011, Effects of silica particles on the electrical percolation threshold and thermomechanical properties of epoxy/silver nanocomposites, Appl. Phys. Lett. 99, 043104.
Ohashi, M., S. Kawakami, Y. Yokogawa, and G.C. Lai, 2005, Spherical aluminum nitride fillers for heat-conducting plastic packages, J. Am. Ceram. Soc. 88, 2615–2618.
Park, H.K., B.S. Kong, and E.S. Oh, 2011, Effect of high adhesive polyvinyl alcohol binder on the anodes of lithium ion batteries, Electrochem. Commun. 13, 1051–1053.
Pashayi, K., H.R. Fard, F. Lai, S. Iruvanti, J. Plawsky, and T. Borca-Tasciuc, 2012, High thermal conductivity epoxy-silver composites based on self-constructed nanostructured metallic networks, J. Appl. Phys. 111, 104310.
Salehiyan, R. and K. Hyun, 2013, Effect of organoclay on nonlinear rheological properties of poly (lactic acid)/poly (caprolactone) blends, Korean J. Chem. Eng. 30, 1013–1022.
Salehiyan, R., H.Y. Song, and K. Hyun, 2015a, Nonlinear behavior of PP/PS blends with and without clay under large amplitude oscillatory shear (LAOS) flow, Korea-Aust. Rheol. J. 27, 95–103.
Salehiyan, R., H.Y. Song, W.J. Choi, and K. Hyun, 2015b, Characterization of effects of silica nanoparticles on (80/20) PP/PS blends via nonlinear rheological properties from Fourier transform rheology, Macromolecules 48, 4669–4679.
Salehiyan, R., Y. Yoo, W.J. Choi, and K. Hyun, 2014, Characterization of morphologies of compatibilized polypropylene/ polystyrene blends with nanoparticles via nonlinear rheological properties from FT-rheology, Macromolecules 47, 4066–4076.
Sarkar, M.D. and P. Deb, 2008, Synthesis and characterization of hybrid nanocomposites comprising poly (vinyl alcohol) and colloidal silica, Adv. Polym. Technol. 27, 152–162.
Wang, S., Y. Cheng, R. Wang, J. Sun, and L. Gao, 2014, Highly thermal conductive copper nanowire composites with ultralow loading: Toward applications as thermal interface materials, ACS Appl. Mater. Interfaces 6, 6481–6486.
Wilhelm, M., 2002, Fourier-transform rheology, Macromol. Mater. Eng. 287, 83–105.
Wilhelm, M., D. Maring, and H.W. Spiess, 1998, Fourier-transform rheology, Rheol. Acta 37, 399–405.
Wilhelm, M., P. Reinheimer, and M. Ortseifer, 1999, High sensitivity Fourier-transform rheology, Rheol. Acta 38, 349–356.
Woo, D.K., W.J. Noh, and S.J. Lee, 2010, Effect of nanotube length on rheological characteristics of polystyrene/multi-walled carbon nanotube nanocomposites prepared by latex technology, Polym. Kor. 34, 534–539.
Wu, H.P., J.F. Liu, X.J. Wu, M.Y. Ge, Y.W Wang, G.Q. Zhang, and J.Z. Jiang, 2006, High conductivity of isotropic conductive adhesives filled with silver nanowires, Int. J. Adhes. Adhes. 26, 617–621.
Zhang, R., K.S Moon, W. Lin, and C.P. Wong, 2010, Preparation of highly conductive polymer nanocomposites by low temperature sintering of silver nanoparticles, J. Mater. Chem. 20, 2018–2023.
Zhao, T., C. Zhang, Z. Du, H. Li, and W. Zou, 2015, Functionalization of AgNWs with amino groups and their application in an epoxy matrix for antistatic and thermally conductive nanocomposites, RSC Adv. 5, 91516–91523.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Lee, S.H., Song, H.Y. & Hyun, K. Effects of silica nanoparticles on copper nanowire dispersions in aqueous PVA solutions. Korea-Aust. Rheol. J. 28, 111–120 (2016). https://doi.org/10.1007/s13367-016-0010-y
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13367-016-0010-y