Mechanism of gross melt fracture elimination in the extrusion of polyethylenes in the presence of boron nitride

Rheologica Acta

Volumn 43, Issue 6, 2004, Pages 624-633

  Sentmanat, Martin ^a   Hatzikiriakos, Savvas G ^b  

^a Senkhar Technologies LLC   (United States)

^b UNIVERSITY OF BRITISH COLUMBIA   (Canada)

Author keywords

Boron nitride; Extensional rheometry; Gross melt fracture; Polyethylenes; Processing aids

Indexed keywords

BORON NITRIDE;

EID: 8844282011     PISSN: 00354511     EISSN: None     Source Type: Journal    
DOI: 10.1007/s00397-004-0359-6     Document Type: Article

References (42)

1. Achilleos EC, Georgiou G, Hatzikiriakos SG (2002) The role of processing aids in the extrusion of molten polymers. J Vinyl Addit Technol 8:7-24 1:CAS:528:DC%2BD38Xis1Kjur4%3D
2. Bagley EB, Schreiber HP (1961) Effect of die entry geometry on polymer melt fracture and extrudate distortion. Trans Soc Rheol 5:341-353 10.1122/1.548904
3. Ballenger TF, Chen I, Crowder J, Hagler GE, Bogue DC, White JL (1971) Polymer melt flow instabilities in extrusion. Trans Soc Rheol 15:195-215 1:CAS:528:DyaE3MXkt1Wqsb4%3D
4. Benbow JJ, Lamb P (1963) New aspects of melt fracture. S.P.E. Trans 3:7-12
5. Bergem N (1976) Visualization studies of polymer melt flow anomalies in extrusion. Proceedings of the 7th Congress on Rheology, Gothenberg, pp 50-54
6. Bird RB, Armstrong RC, Hassager O (1987) Dynamics of polymeric liquids. Wiley, NY
7. Buckmaster MD, Henry DL, Randa SK (1997) U.S. Patents 5,688,457 issued to E. I. DuPont de Nemours & Co Inc
8. Cogswell FN (1972) Converging flow of polymer melt in extrusion dies. Polym Eng Sci 12:64-73 1:CAS:528:DyaE38Xht1OqsLc%3D
9. Cogswell FN (1977) Converging flow and stretching flow: A compilation. J Non-Newtonian Fluid Mech 4:23-38
10. Done DS, Baird DG, Everage AE (1983) The influence of porous media on the flow of polymer melts in capillaries. Chem Eng Commun 21:293-309 1:CAS:528:DyaL3sXksVSnsbg%3D
11. Goutille Y, Guillet J (2002) Influence of filters in the die entrance region on gross melt fracture: Extrudate and flow visualization. J Non-Newtonian Fluid Mech 102:19-36
12. Goutille Y, Majeste J-C, Francois Tassin J-F, Guillet J (2003) Molecular structure and gross melt fracture triggering. J Non-Newtonian Fluid Mech 111:175-198
13. Howells ER, Benbow JJ (1962) Flow defects in polymer melts. Trans Plast Inst 30:240-2531:CAS:528:DyaF3sXmtVaruw%3D%3D
14. Hürlimann HP, Knappe W (1972) Der Zusammenhang zwischen der Dehnspannung von Kunststoffschmelzen im Düseneinlauf und im Schmelzbruch. Rheol Acta 11:292-301
15. Joshi YM, Denn MM (2003a) Rupture of entangled polymeric liquids in elongational flow. J Rheol 47:291-298 10.1122/1.1530622
16. Joshi YM, Denn MM (2003b) Planar contraction flow with a slip boundary condition. J Non-Newtonian Fluid Mech 114:185-195
17. Kazatchkov IB, Yip F, Hatzikiriakos SG (2000) The effect of boron nitride on the rheology and processing of polyolefins. Rheol Acta 39:583 10.1007/s003970000113, 1:CAS:528:DC%2BD3cXoslyisrc%3D
18. Kim S, Dealy JM (2002a) Gross melt fracture of polyethylene. I. A criterion based on tensile stress. Polym Eng Sci 42:482-494 1:CAS:528:DC%2BD38XisVymtbk%3D
19. Kim S, Dealy JM (2002b) Gross melt fracture of polyethylene. II. Effects of molecular structure. Polym Eng Sci 42:485-503
20. Kobayashi M, Kahahashi T, Takimoto J, Koyama K (1995) Flow-induced whisker elimination and viscosity for molten composite systems in a uniaxial elongational flow-field. Polymer 36:3927-3933 10.1016/0032-3861(95)99787-U
21. Kurtz SJ (1992) The dynamics of sharkskin melt fracture: Effect of die geometry. Proceedings of the 11th International Congress on Rheology. In: Moldenaers P, Keunings R (eds) Theoretical and applied rheology. Elsevier Science Publishers, Brussels, p 377-379
22. Larson RG (1992) Instabilities in viscoelastic flows. Rheol Acta 31:213-263 1:CAS:528:DyaK38XlvFals74%3D
23. Lee SM, Lee JW (2001) The effect of boron nitride on the rheological properties and processability of polyethylene. ANTEC '2001, Society of Plastics Engineers, New York, NY, USA, vol 45, pp 1223-1227
24. Lee SM, Kim JG, Lee JW (2000) The effect of boron nitride on the processability of metallocene based LLDPE. ANTEC '2000, Society of Plastics Engineers, New York, NY, USA, vol 46, pp 2862-2866
25. Le Meins J-F, Moldenaers P, Mewis J (2003) Suspensions of monodisperse spheres in polymer melts: Particle size effects in extensional flow. Rheol Acta 42:184-190
26. Leonov AL, Prokunin AN (1994) Nonlinear phenomena in flows of viscoelastic polymer fluids. Chapman and Hall, NY, pp 356-396
27. Migler KB, Lavallee C, Dillon MP, Woods SS, Gettinger CL (2001) Visualizing the elimination of sharkskin through fluoropolymer additives: Coating and polymer-polymer slippage. J Rheol 45:565-581 10.1122/1.1349136, 1:CAS:528:DC%2BD3MXhsFCntbw%3D
28. Migler KB, Son Y, Qiao F, Flynn K (2002) Extensional deformation, cohesive failure and boundary conditions during sharkskin melt fracture. J Rheol 46:383-400 10.1122/1.1445186, 1:CAS:528:DC%2BD38Xhs1antLs%3D
29. Pearson JRA (1985) Mechanics of polymer processing. Elsevier, London
30. Piau JM, Nigen S, El Kissi N (2000) Effect of die entrance filtering on mitigation of upstream instability during extrusion of polymer melts. J Non-Newtonian Fluid Mech 91:35-57
31. Ramamurthy AV (1986) Wall slip in viscous liquids and influence of materials of construction. J Rheol 30:337-357 10.1122/1.549852, 1:CAS:528:DyaL28Xit1Gksrk%3D
32. Rathod N (2003) The effect of surface properties of boron nitride on the processability of polymers. M.A.Sc. Thesis, The University of British Columbia, Vancouver, Canada
33. Rosenbaum EE, Randa S, Hatzikiriakos SG, Stewart CW (2000) Boron nitride as a processing aid for the extrusion of polyolefins and fluoropolymers. Polym Eng Sci 40:179-190 1:CAS:528:DC%2BD3cXhslOjt7Y%3D
34. Sentmanat ML (2003a) A novel device for characterizing polymer flows in uniaxial extension. ANTEC '03, Society of Plastics Engineers, Tech Papers 49, CD-ROM, New York
35. Sentmanat ML (2003b) Dual windup extensional rheometer. US Patent No 6,578,413
36. Shaw MT (1975) Flow of polymer melts through a well-lubricated, conical die. J Appl Polym Sci 19:2811-2816 10.1002/app.1975.070191016, 1:CAS:528:DyaE2MXls1Ghtbc%3D
37. Tordella JP (1956) Fracture in the extrusion of amorphous polymers through capillaries. J Appl Phys 27:454-458 1:CAS:528:DyaG28XnsF2hug%3D%3D
38. Tordella JP (1969) Unstable flow of molten polymers. In: Eirich FR (ed) Rheology, theory and applications. Academic Press, NY, pp 57-92
39. Vinodradov GV, Malkin AY (1980) Rheology of polymers, 1st edn. Moscow, Mir Publishers, Berlin: Springer, Berlin Heidelberg New York, pp 140-150
40. Yip F (1999) The effect of boron nitride on the rheology and processability of molten polymers. M.A.Sc. Thesis, The University of British Columbia, Vancouver, Canada
41. Yip F, Rosenbaum EE, Randa SK, Hatzikiriakos SG, Stewart CW (1999) The effect of boron nitride type and concentration on the rheology and processability of molten polymers. ANTEC '99, Society of Plastics Engineers, Tech Papers 45, New York, pp 1223-1227
42. Yip F, Rosenbaum E, Hatzikiriakos SG (2000) Boron nitride powders: New processing aids for molten polymers. J Plastic Film Sheeting 16:16-32 10.1106/CR1N-M95B-9H2Y-H5Q3