Rheological behavior of polypropylene/octavinyl polyhedral oligomeric silsesquioxane composites

The reactive blending composites of isotactic polypropylene (PP)/octavinyl polyhedral oligomeric silsesquioxane (POSS) were prepared in the presence of dicumyl peroxide. Comparison of the rheological behavior of physical and reactive blending composites was made by oscillatory rheological measurements. It was found that the viscosity of physical blending composites drops at lower POSS content (0.5–1 wt %) and thereafter increases with increasing POSS content; that of reactive blending composites increases with increasing POSS content and displays a solid-like rheological behavior at low frequency region when POSS content is higher than 1 wt %. The deviation of reactive blending composites from the scaling log G′–log G″ of linear polymer in Han plot, upturning at high viscosity in Cole–Cole plot, and from van Gurp–Palmen plot are related to the gelation behavior reactively. © 2008 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 46: 526–533, 2008

[1]  M. Jaziri,et al.  Immiscible Blends of PC and PET, Current Knowledge and New Results: Rheological Properties , 2007 .

[2]  J. E. Mark,et al.  Preparation and Rheological Characterization of Polymer Nanocomposites Based on Expanded Graphite , 2007 .

[3]  M. Boyce,et al.  Polyhedral oligomeric silsesquioxane as a novel plasticizer for poly(vinyl chloride) , 2007 .

[4]  P. Mather,et al.  Rheological Behavior of Entangled Polystyrene−Polyhedral Oligosilsesquioxane (POSS) Copolymers , 2007 .

[5]  E. Kosior,et al.  Molecular Level Stabilization of Poly(ethylene terephthalate) with Nanostructured Open Cage Trisilanolisobutyl-POSS , 2007 .

[6]  Wei Yu,et al.  The preparation and rheology characterization of long chain branching polypropylene , 2006 .

[7]  M. Boyce,et al.  Rate-dependent deformation behavior of poss-filled and plasticized poly(vinyl chloride) , 2006 .

[8]  G. Simon,et al.  Rheological and Viscoelastic Behavior of HDPE/Octamethyl-POSS Nanocomposites , 2006 .

[9]  D. Schiraldi,et al.  Thermal and mechanical properties of polyhedral oligomeric silsesquioxane (POSS)/polycarbonate composites , 2005 .

[10]  G. McKinley,et al.  Miscibility and viscoelastic properties of acrylic polyhedral oligomeric silsesquioxane–poly(methyl methacrylate) blends , 2005 .

[11]  B. S. Butola,et al.  Polymeric Nanocomposites—Polyhedral Oligomeric Silsesquioxanes (POSS) as Hybrid Nanofiller , 2004 .

[12]  C. Han,et al.  Molecular Weight Dependence of Zero-Shear Viscosity of Block Copolymers in the Disordered State , 2004 .

[13]  B. Hsiao,et al.  Physical gelation in ethylene–propylene copolymer melts induced by polyhedral oligomeric silsesquioxane (POSS) molecules , 2003 .

[14]  H. Toghiani,et al.  Viscoelastic and mechanical properties of vinyl ester (VE)/multifunctional polyhedral oligomeric silsesquioxane (POSS) nanocomposites and multifunctional POSS-styrene copolymers , 2002 .

[15]  R. Farris,et al.  X-ray Characterizations of Polyethylene Polyhedral Oligomeric Silsesquioxane Copolymers , 2002 .

[16]  C. Friedrich,et al.  Van Gurp-Palmen Plot II – classification of long chain branched polymers by their topology , 2002 .

[17]  Kiyohito Koyama,et al.  Viscoelastic and Mechanical Properties of Epoxy/Multifunctional Polyhedral Oligomeric Silsesquioxane Nanocomposites and Epoxy/Ladderlike Polyphenylsilsesquioxane Blends , 2001 .

[18]  A. Yee,et al.  Organic/inorganic hybrid composites from cubic silsesquioxanes. , 2001, Journal of the American Chemical Society.

[19]  C. Friedrich,et al.  Van Gurp-Palmen-plot: a way to characterize polydispersity of linear polymers , 2001 .

[20]  P. Mather,et al.  Viscoelastic and morphological behavior of hybrid styryl-based polyhedral oligomeric silsesquioxane (POSS) copolymers , 1998 .

[21]  A. Santamaría,et al.  Small-Amplitude Oscillatory Shear Flow Measurements as a Tool To Detect Very Low Amounts of Long Chain Branching in Polyethylenes , 1998 .

[22]  Joseph D. Lichtenhan,et al.  Hybrid organic-inorganic thermoplastics : Styryl-based polyhedral oligomeric silsesquioxane polymers , 1996 .

[23]  C. Han,et al.  Criteria for rheological compatibility of polymer blends , 1985 .

[24]  C. Han,et al.  Rheological behavior of polymer blends , 1984 .