Abstract
We study a dynamic interfacial slip phenomenon in filled polymer melts. When a poly(dimethyl siloxane) melt of weight average molecular weight M w = 93 700 is mixed with glass beads of diameter up to 45 μm, the sample shows some evidence of breakdown of interfacial adhesion between the glass beads and the PDMS matrix at a level of oscillatory stress under which the pure PDMS melt exhibits no decay. The decay of viscoelastic properties with time is essentially independent of the amplitude of shear strain as long as the magnitude of the oscillating stress is sufficiently high. It is suggested that much higher local stress than the apparent applied stress may be generated between the narrowly spaced beads. The interfacial slip was observable because it was measured against a natural length scale d in the filled polymer melts which is the filler size or the inter-filler distance and is much smaller than the dimensions of the flow cell. The decay under high stress and healing of interfacial adhesion upon a large reduction in stress may be related to the de-bonding and reformation of hydrogen bonds between the PDMS chains and the glass bead surfaces.
Similar content being viewed by others
References
Atwood BT, Schowalter WR (1989) Measurement of slip at the wall during flow of high-density polyethylene through a rectangular conduit. Rheol Acta 28:134 - 146
Bird RB, Armstrong RC, Hassager O, Curtiss CF (1987) Dynamics of Polymeric Fluids, 2nd ed. John Wiley & Sons, New York
Brochard F, de Gennes PG (1992) Shear-dependent slippage at a polymer/solid interface. Langmuir 8:3033 - 3037
Chen YL, Larson RG, Patel SS (1993) Shear fracture of polystyrene melts and solutions. Preprint submitted to Rheol Acta
Cohen-Addad JP, Ebengou R (1992) Silica-siloxane mixtures. Investigations into adsorption properties of endmethylated and end-hydroxylated chains. Polym 33:379 - 383
Doi M, Edwards SF (1986) The theory of polymer dynamics. Clarendon Press, Oxford
Ferry JD (1980) Viscoelastic Properties of Polymers, 3rd ed. John Wiley & Sons, New York
PG de Gennes (1979) C R Acad Sci 288B:219 - 220
Gent AN, Schultz J (1972) Effect of wetting liquids on the strength of adhesion of viscoelastic materials. J Adhesion 3:281 - 294
Girard O, Cohen-Addad JP (1991) Silica-siloxane mixtures: surface saturation process of particles. Kinetics. Polym 32:860 - 863
Hatzikiriakos SG, Dealy JM (1991) Wall slip of molten high density polyethylene. I. Sliding plate rheometer studies. J Rheol 35:497 - 523
Hatzikiriakos SG, Dealy JM (1992a) Wall slip of molten high density polyethylene. II. Capillary rheometer studies. J Rheol 36:703 - 741
Hatzikiriakos SG, Dealy JM (1992b) Role of slip and fracture in the oscillating flow of HDPE in a capillary. J Rheol 36:845 - 884
Hill DA, Hasegawa T, Denn MM (1990) On the apparent relation between adhesive failure and melt fracture. J Rheol 34:891 - 918
Inn YW, Wang SQ (1994a) Poly(dimethylsiloxane) adsorption on glass and hydrodynamic slip. Manuscript submitted to Macromolecules
Inn YW, Wang SQ (1994b) Effect of interfacial conditions — surface treatment and molecular weight on rheological properties of glass-beads filled poly(dimethyl siloxane) melt. Manuscript in preparation
Kalika DS, Denn MM (1987) Wall slip and extrudate distortion in linear low density polyethylene. J Rheol 31:815 - 834
Larson RG (1992) Instabilities in viscoelastic flows. Rheol Acta 31:213 - 263
Lee J-J, Fuller GG (1985) Adsorption and desorption of flexible polymer chains in flowing systems. J Colloid Interf Sci 103:569 - 578
Migler KB, Hervet H, Leger L (1993) Slip transition of a polymer melt under shear stress. Phys Rev Lett 70:287 - 290
Petrie CJS, Denn MM (1976) Instabilities in polymer processing. AIChE J 22:209 - 236
Ramamurthy AV (1986) Wall slip in viscous fluids and influence of materials of construction. J Rheol 30:337 - 357
Thomas DG (1965) Transport characteristics of suspension: VIII. A note on the viscosity of Newtonian suspensions of uniform spherical particles. J Colloid Sci 20:267 - 277
Van Krevelen DW (1990) Properties of polymers, 3rd ed. Elsevier, Amsterdam
Wu S (1982) Polymer interface and adhesion. Dekker, New York
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Wang, S.Q., Inn, Y.W. Stress-induced interfacial failure in filled polymer melts. Rheol Acta 33, 108–116 (1994). https://doi.org/10.1007/BF00366755
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00366755