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Mech. 141 (2007) 167 - 179. [7] Tanner RI: A theory of die-swell, J. Polym. Sci.: Part A 8 (1970) 2067 - 2078. [8] Huang D, White JL: Extrudate swell from slit and capillary dies: An experimental and theoretical study, Polm. Eng. Sci., 19 (1979) 182 - 189. [9] Huang D, White JL: Experimental and theoretical investigation of extrudate swell of polymer melts from small (length)/(cross-section) ratio slit and capillary dies, Polm. Eng. Sci. 20 (1980) 609 - 616. [10] Guillet J, Seriai M: Quantitative evaluation of extrudate swell from viscoelastic properties of

J Polym Eng 31 (2011): 217–221 © 2011 by Walter de Gruyter • Berlin • Boston. DOI 10.1515/POLYENG.2011.046 Numerical and experimental studies on extrudate swell of branched polyethylene through axisymmetric and planar dies Vivek Ganvir 1,2, *, Basavarsu Gautham 1 , Rochish Thaokar 2 , Ashish Lele 3 and Harshwardhan Pol 3 1 Tata Research Development and Design Centre , Pune , India , e-mail: vivek.ganvir@tcs.com 2 Department of Chemical Engineering , Indian Institute of Technology, Mumbai , India 3 Division of Polymer Science and

J Polym Eng 32 (2012): 259–263 © 2012 by Walter de Gruyter • Berlin • Boston. DOI 10.1515/polyeng-2012-0005 Melt extrudate swell behavior of polypropylene composites fi lled with hollow glass beads Ji-Zhao Liang * and Ming-Qiang Zhong College of Industrial Equipment and Control Engineering , South China University of Technology, Guangzhou 510640 , P.R. China , e-mail: liangjz@scut.edu.cn * Corresponding author Abstract Polypropylene (PP) composites fi lled with hollow glass beads (HGB) were prepared by means of a twin-screw extruder. The

DOI 10.1515/polyeng-2012-0084      J Polym Eng 2013; 33(1): 19–26 Ji-Zhao Liang * Melt extrudate swell behavior of POM/EVA/HDPE/ nano-CaCO 3 composites Abstract: Polyformaldehyde (POM)/ethylene-vinyl acetate copolymer (EVA)/high-density polyethylene (HDPE) com- posites filled with nanometer calcium carbonate (nano- CaCO 3 ) were prepared using a twin-screw extruder. The effects of load and temperature on the melt extrudate swell behavior of the composites were investigated, by using a melt flow rate instrument under experimental conditions, with

REFERENCES [1] Graessley WW et al.: Die Swell in Molten Polymers. Transactions of the Society of Rheology 14 (1970) 519-544. [2] Han CD et al.: Rheological Implications of the Exit Pressure and Die Swell in Steady Capillary Flow of Polymer Melts I. The Primary Normal Stress Difference and the Effect of L/D Ratio on Elastic Properties. Transactions of the Society of Rheology 14 (1970) 393-408. [3] Hill GA, Chenier CL : Die Swell Experiments for Newtonian Fluids. The Canadian Journal of Chemical Engineering 62 (1984) p 40-45. [4] Koopmans RJ: Extrudate Swell of

References [1] Tanner RI: A Theory of die-swell, J. Polymer Sci. Part A2 8 (1970) 2067 - 2078. [2] Malkin AY, Goncharenko VV, Malinovskii VV: Barus effects in polymer flows through cylindrical and flat dies, Polym. Mech. 12 (1976) 439 - 444. [3] Bush MB, Tanner RI., Phan-Thien N: A boundary element investigation of extrudate swell, J. Non-Newtonian Fluid Mech. 18 (1985) 143 - 162. [4] Luo XL, Mitsoulis E: Memory phenomena in extrudate swell simulations for annular dies, J. Rheol. 33 (1989) 1307 - 1326. [5] Georgiou GC, Boudouvis AG: Converged solutions of the

REFERENCES [1] Molenaar J, Koopmans RJ: Modeling polymer melt-flow instabilities. J. Rheology 38 (1994) 99-109. [2] Georgiou GC, Crochet MJ: Time-dependent compressible extrudate-swell problem with slip at the wall. J. Rheology 38 (1994) 1745-1755. [3] Venet C, Vergnes B: Experimental Characterization of Sharkskin in Polyethylenes, J. Rheology 41 (1997) 873-892. [4] Graham MD: The sharkskin instability of polymer melt flows. Chaos 9 (1999) 154-163. [5] Denn MM: Extrusion instabilities and wall slip. Annu. Rev. Fluid Mech. 33 (2001) 265-297. [6] Barone JR

unplasticised poly(vinyl chloride)/kaolin composites were prepared by directly melt mixing polypropylene (PP) and unplasticised poly(vinyl chloride) (UPVC) with maleic anhydride (MAH) and low cost kaolin via in situ extrusion process. The influences of kaolin particles and MAH in PP and UPVC matrix were discussed through investigating the flexural and morphological properties of filled PP and UPVC composites. The extrudates obtained from the extrusion process were carefully collected in order to investigate the elastic properties (extrudate swell and melt fracture

References [1] Tanner RI: Engineering Rheology, Oxford University Press, London (1985). [2] Al-Muslimawi A, Tamaddon-Jahromi HR, Webster MF: Simulation of viscoelastic and viscoelastoplastic die-swell flows, J. Non-Newtonian Fluid Mech. 191 (2013) 45- 56. [3] Oishi CM, Martins FP, Tomé MF, Cuminato JA, McKee S: Numerical solution of the eXtended Pom-Pom model for viscoelastic free-surface flows, J. Non-Newtonian Fluid Mech. 166 (2011) 165- 179. [4] Mitsoulis E: Extrudate swell of Boger fluids, J. Non-Newtonian Fluid Mech. 165 (2010) 812- 824. [5] Tomé MF, Grossi

the Fixed Wall, Rheol. Acta 37 (1998) 61-67. [81] Brasseur E, Fyrillas MM, Georgiou GC, Crochet MJ: The Time-Dependent Extrudate-Swell Problem of an Oldroyd-B Fluid with Slip along the Wall, J. Rheol. 42 (1998) 549-566. [82] Shore JD, Ronis D, Piché L, Grant M: Model for Melt Fracture Instabilities in the Capillary Flow of Polymer Melts, Phys. Rev. Let. 77 (1996) 655-658. [83] Shore JD, Ronis D, Piché L, Grant M: Theory of Melt Fracture Instabilities in the Capillary Flow of Polymer Melts, Phys. Rev. E 55 (1997) 2976-2992. [84] Shore JD, Ronis D, Piché L, Grant M