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Melt rheology and die swell of PA6/LDPE blends by using lithium ionomer as a compatibilizer

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Abstract

Rheological behavior and die swell in blends of polyamide 6/low-density polyethylene with and without compatibilizers were investigated. The compatibilizers used were copolymers of ethylene and methacrylic acid with and without partial lithium neutralization. The results showed that the apparent viscosity, non-Newtonian index, flow activation energy and die swell of the blend are affected by the compatibilizer identity and content. In general, the effects were more significant at low shear rates and lithium-neutralized materials tended to show greater effects than the hydrogen form of the copolymer.

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References

  1. Bryson JA (1970) Flow properties of polymer melts. Van Nostrand Reinhold, New York

    Google Scholar 

  2. Allen VR, Fox TG (1964) Viscosity—molecular weight dependence for short chain polystyrenes. J Chem Phys 41:337–343

    Article  CAS  Google Scholar 

  3. Cogswell FN (1973) Influence of pressure on the viscosity of polymer melts. Plast Polym 41:39–43

    CAS  Google Scholar 

  4. Bagley EB (1961) The separation of elastic and viscous effects in polymer flow. J Rheol 5(1):355–368

    Article  CAS  Google Scholar 

  5. Wei Q, Chionna D, Galoppini E, Pracella M (2003) Functionalization of LDPE by melt grafting with glycidyl methacrylate and reactive blending with polyamide-6. Macromol Chem Phys 204(8):1123–1133

    Article  CAS  Google Scholar 

  6. Valenza A, Visco AM, Acierno D (2002) Characterization of blends with polyamide 6 and ethylene acrylic acid copolymers at different acrylic acid content. Polym Test 21(1):101–109

    Article  CAS  Google Scholar 

  7. Evstatiev M, Schultz JM, Oliveira MJ, Fakirov S, Krasteva B, Friedrich K (2002) Strucure-property relationships of microfibrillar reinforced blends of linear polycondensates. Int J Polym Mat 51(4):351–367

    Article  CAS  Google Scholar 

  8. Macknight WJ, Lenz RW, Musto PV, Somani RJ (1985) Binary alloys of nylon 6 and ethylene-methacrylic acid copolymers: morphological, thermal and mechanical analysis. Polym Eng Sci 25(18):1124–1134

    Article  CAS  Google Scholar 

  9. Magaraphan R, Skularriya R, Kohjiya S (2007) Morphological study of LLDPE-NR reactive blending with maleic anhydride. J Appl Polym Sci 105(4):1914–1921

    Article  CAS  Google Scholar 

  10. Sinthavathavorn W, Nithitanakul M, Magaraphan R, Grady BP (2008) Blends of polyamide 6 with low-density polyethylene compatibilized with ethylenemethacrylic acid based copolymer ionomers: effect of neutralizing cations. J Appl Polym Sci 107(5):3090–3098

    Article  CAS  Google Scholar 

  11. Vanhoorne P, Register RA (1996) Low-shear melt rheology of partially-neutralized ethylene—methacrylic acid ionomers. Macromolecules 29(2):598–604

    Article  CAS  Google Scholar 

  12. Cogswell FN (1994) Polymer melt rheology. Woodhead Publishing, London

    Google Scholar 

  13. Bonotto S, Bonner EF (1968) Effect of ion valency on the bulk physical properties of salts of ethylene-acrylic acid copolymers. Macromolecules 1(6):510–515

    Article  CAS  Google Scholar 

  14. Jana RN, Nando GB (2005) Rheological behavior of low-density polyethylene (LDPE)-polydimethylsiloxane rubber (PDMS) blends. J Elast Plast 37:149–168

    Article  CAS  Google Scholar 

  15. Li D, Jia D, Zhou P (2004) Compatibilization of polypropylene/nylon 6 blends with a polypropylene solid-phase graft. J Appl Polym Sci 93(1):420–427

    Article  CAS  Google Scholar 

  16. Buchdahl R, Nielsen LE, Merz EH (1951) Rheology of thermoplastics. II. Recoverable and nonrecoverable deformations of polystyrene between 90 and 240°C as a function of molecular weight. J Polym Sci 6(4):403–422

    Article  CAS  Google Scholar 

  17. Bagley EB, Storey SH, West DC (1963) Post extrusion swelling of polyethylene. J Appl Polym Sci 7(5):1661–1672

    Article  CAS  Google Scholar 

  18. Vlachopoulos J, Horie M, Lidorikis S (1972) An evaluation of expressions predicting die swell. J Rheol 16(4):669–685

    Article  CAS  Google Scholar 

  19. Oommen Z, Thomas S, Premalatha CK, Kuriakose B (1997) Melt rheological behaviour of natural rubber/poly(methyl methacrylate)/natural rubber-g-poly(methyl methacrylate) blends. Polymer 38(22):5611–5621

    Article  Google Scholar 

  20. Wakita N (1993) Melt elasticity of incompatible blends of poly(butylene terephthalate)(PBT) and polyamide 6 (PA6). Polym Eng Sci 33(13):781–788

    Article  CAS  Google Scholar 

  21. Huang C-C, Chang F-C (1997) Reactive compatibilization of polymer blends of poly(butylene terephthalate) (PBT) and polyamide-6,6 (PA66): 1. Rheological and thermal properties. Polymer 38(9):2135–2141

    Article  CAS  Google Scholar 

  22. Gupta AK, Jain AK, Maiti SN (1989) Studies on binary and ternary blends of polypropylene with ABS and LDPE. I. Melt rheological behavior. J Appl Polym Sci 38(9):1699–1717

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, Thailand

    Wachiraphon Sinthavathavorn, Manit Nithitanakul & Rathanawan Magaraphan

  2. School of Chemical, Biological and Materials Engineering, The University of Oklahoma, 100 East Boyd, Norman, OK, 73019, US

    Brian P. Grady

Authors
  1. Wachiraphon Sinthavathavorn
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  2. Manit Nithitanakul
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  3. Brian P. Grady
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  4. Rathanawan Magaraphan
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Correspondence to Rathanawan Magaraphan.

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Sinthavathavorn, W., Nithitanakul, M., Grady, B.P. et al. Melt rheology and die swell of PA6/LDPE blends by using lithium ionomer as a compatibilizer. Polym. Bull. 63, 23–35 (2009). https://doi.org/10.1007/s00289-009-0063-x

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  • DOI: https://doi.org/10.1007/s00289-009-0063-x

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