Oxygen-barrier films based on low-density polyethylene/ ethylene vinyl alcohol/ polyethylene-grafted maleic anhydride compatibilizer

Document Type: Original research

Authors

Department of Plastics Engineering, Iran Polymer and Petrochemical Institute, P.O.Box14975/112, Tehran, I.R. Iran

Abstract

In this research, high oxygen-barrier films were organized based on low-density polyethylene (LDPE)/ ethylene vinyl alcohol (EVOH)/ polyethylene-grafted maleic anhydride (LDPE-g-MA) compatibilizer. The effects of 10–30 wt. % EVOH and 0–10 wt. % LDPE-g-MA loadings on the properties of final films were evaluated. The morphology of specimens was observed by using scanning electron microscopy (SEM). Oxygen transfer rate (OTR) results revealed that the addition of EVOH up to 30 wt. % to neat LDPE could significantly decrease oxygen permeability. The LDPE-g-MA which increased the permeability needed to be fine-tuned its amount based on the EVOH loading in different samples. The experimental results revealed that the addition of 30 wt. % EVOH to the LDPE matrix without adding LDPE-g-MA gave the best oxygen barrier properties. Elastic modulus and tensile strength increased with incorporation of EVOH and LDPE-g-MA into the polyethylene matrix. On the other hand, elongation-at-break decreased with the addition of EVOH and increased with the introduction of compatibilizer to the samples. Incorporation of EVOH and LDPE-g-MA into the LDPE matrix and increasing their amounts led to higher storage modulus and zero shear rate viscosity, but lowered the frequency value at the intersection point of storage modulus (G') and loss modulus (G''). The only exception was that in the samples without compatibilizer, the increase in the EVOH content resulted in a lower zero shear rate viscosity and a higher frequency value at the intersection point of G' and G''.

Keywords

Main Subjects


  1. Duncan TV (2011) Applications of nanotechnol­ogy in food packaging and food safety: Barrier materials, antimicrobials and sensors. J Colloid Interface Sci 363: 1-24
  2. Silvestre C, Duraccio D, Cimmino S (2011) Food packaging based on polymer nanomaterials. Prog Polym Sci 36: 1766-1782
  3. Huang C-H, Wu J-S, Huang C-C, Lin L-S (2004) Morphological, thermal, barrier and mechanical properties of LDPE/EVOH blends in extruded blown films. J Polym Res 11: 75-83
  4. Santamaría P, González I, Eguiazábal JI (2015) Mechanical and barrier properties of ternary nanocomposite films based on polycarbonate/amorphous polyamide blends modified with a nanoclay. Polym Adv Technol 26: 665-673
  5. Robertson GL (2012) Food packaging: principles and practice. CRC press
  6. Mathlouthi M (2013) Food packaging and preser­vation. Springer Science & Business Media
  7. Lange J,Wyser Y (2003) Recent innovations in barrier technologies for plastic packaging-A re­view. Packag Technol Sci 16: 149-158
  8. Elen K, Murariu M, Peeters R, Dubois P, Mullens J, Hardy A, Van Bael M (2012) Towards high-performance biopackaging: Barrier and mechani­cal properties of dual-action polycaprolactone/ zinc oxide nanocomposites. Polym Adv Technol 23: 1422-1428
  9. Scherzer T, Schubert R (1998) Oxygen permea­bility of electron beam cured gelatin methacrylate layers. Polym Adv Technol 9: 777-785
  10. Ait-Kadi A, Bousmina M, Yousefi A, Mighri F (2007) High performance structured polymer bar­rier films obtained from compatibilized polypro­pylene/ethylene vinyl alcohol blends. Polym Eng Sci 47: 1114-1121
  11. Rahnama M, Oromiehie A, Ahmadi S, Ghasemi I (2016) Investigation of polyethylene-grafted-maleic anhydride presence as a compatibilizer on various properties of nanocomposite films based on polyethylene/ethylene vinyl alcohol/nanoclay. Polym Adv Technol
  12. Paul DR (2012) Polymer blends. Vol. 1., Elsevier
  13. Mittal V (2012) Functional polymer blends: Syn­thesis, properties and performance, CRC Press
  14. Gomari S, Ghasemi I, Karrabi M, Azizi H (2015) An investigation on non-isothermal crystalliza­tion behavior and morphology of polyamide 6/ poly (ethylene-co-1-butene)-graft-maleic anhy­dride/organoclay nanocomposites. Polyolefins J 2: 99-108
  15. Kebritchi A, Nekoomanesh M, Mohammadi F, Khonakdar HA (2014) The role of 1-hexene co­monomer content in thermal behavior of medium density polyethylene (MDPE) synthesized using Phillips catalyst. Polyolefins J 1: 117-129
  16. Zohuri G, Damavandi S, Ahmadjo S, Shamekhi M (2014) Synthesis of high molecular weight polyethylene using FI catalyst. Polyolefins J 1: 25-32
  17. Mokwena KK, Tang J (2012) Ethylene vinyl al­cohol: a review of barrier properties for packag­ing shelf stable foods. Crit Rev Food Sci Nutr 52: 640-650
  18. Wang G, Yoshikawa H, Tamiya E, Uyama H (2015) Mesoporous poly (ethylene-co-vinyl alco­hol) monolith captured with silver nanoparticles as a SERS substrate: Facile fabrication and ultra-high sensitivity. RSC Adv 5: 25777-25780
  19. Wang G, Kundu D, Uyama H (2015) One-pot fabrication of palladium nanoparticles captured in mesoporous polymeric monoliths and their catalytic application in C–C coupling reactions. J Colloid Interface Sci 451: 184-188
  20. Wang G, Xin Y, Uyama H (2015) Facile fabrica­tion of mesoporous poly (ethylene-co-vinyl alco­hol)/chitosan blend monoliths. Carbohydr Polym 132: 345-350
  21. Kim SW, Cha SH (2014) Thermal, mechanical, and gas barrier properties of ethylene–vinyl al­cohol copolymer-based nanocomposites for food packaging films: Effects of nanoclay loading. J Appl Polym Sci 131: 40289
  22. Kim SW, Choi HM (2014) Enhancement of ther­mal, mechanical and barrier properties of ethyl­ene vinyl alcohol copolymer by incorporation of graphene nanosheets effect of functionalization of graphene oxide. High Perform Polym 27: 694-704
  23. Ahn TO, Kim CK, Kim BK, Jeong HM, Huh JD (1990) Binary blends of nylons with ethylene vi­nyl alcohol copolymers: Morphological, thermal, rheological and mechanical behavior. Polym Eng Sci 30: 341-349
  24. Yeh J-T, Huang S-S, Heng-Yi C (2005) White spirit permeation resistance of polyethylene, polyethylene/modified polyamide, and polyethyl­ene/blends of modified polyamide and ethylene vinyl alcohol bottles. Polym Eng Sci 45: 25-32
  25. Park SH, Lee GJ, Im SS, Suh KD (1998) Ethyl­ene vinyl alcohol copolymer/high density poly­ethylene blends compatibilized through function­alization. Polym Eng Sci 38: 1420-1425
  26. Thomas S, Grohens Y, Jyotishkumar P (2014) Characterization of polymer blends: Miscibility, morphology and interfaces. John Wiley & Sons
  27. Thomas S, Shanks R, Chandrasekharakurup S (2013) Nanostructured polymer blends. Vol. 1. William Andrew
  28. Kamal M, Garmabi H, Hozhabr S, Arghyris L (1995) The development of laminar morphology during extrusion of polymer blends. Polym Eng Sci 35: 41-51
  29. Samios CK, Kalfoglou NK (1998) Compatibiliza­tion of poly (ethylene-co-vinyl alcohol)(EVOH) and EVOH/HDPE blends with ionomers. Struc­ture and properties. Polym 39: 3863-3870
  30. Wang Q, Qi R, Shen Y, Liu Q, Zhou C (2007) Effect of high-density polyethylene-g-maleic anhydride on the morphology and properties of (high-density polyethylene)/(ethylene–vinyl al­cohol) copolymer alloys. J Appl Polym Sci 106: 3220-3226
  31. Kalfoglou NK, Samios CK, Papadopoulou CP (1998) Compatibilization of poly (ethylene-co-vinyl alcohol)(EVOH) and EVOH–HDPE blends: Structure and properties. J Appl Polym Sci 68: 589-596
  32. Lee SY, Kim SC (1997) Laminar morphology development and oxygen permeability of LDPE/ EVOH blends. Polym Eng Sci 37: 463-475
  33. Lee S-Y, Kim SC (1998) Effect of compatible­user on the crystallization, theological, and tensile properties of LDPE/EVOH blends. J Appl Polym Sci 68: 1245-1256
  34. Park SH, Lee GJ, Im SS, Do Suh K (1998) Eth­ylene vinyl alcohol copolymer/high density polyethylene blends compatibilized through function­utilization. Polym Eng Sci 38: 1420-1425
  35. Okada A, Usuki A (2006) Twenty years of poly­mer-clay nanocomposites. Macromol Mater Eng 291: 1449-1476
  36. Tsai Y, Wu J-H, Leu M-T (2011) Influence of organoclay dispersed state of poly (ethylene glycol-co-1, 3/1, 4-cyclohexanedimethanol tere­phthalate)/organoclay nanocomposites on their characteristics. Polym Adv Technol 22: 2319– 2324
  37. Landel RF, Nielsen LE (1993) Mechanical prop­erties of polymers and composites. CRC Press
  38. Khosrokhavar R, Naderi G, Bakhshandeh GR, Ghoreishy MHR (2011) Effect of processing pa­rameters on PP/EPDM/organoclay nanocompos­ites using Taguchi analysis method. Iran Polym J 20: 41-53
  39. Johnson MB, Wilkes GL (2001) Microporous membranes of polyoxymethylene from a melt-extrusion process:(I) effects of resin variables and extrusion conditions. J Appl Polym Sci 81: 2944- 2963
  40. Johnson MB, Wilkes GL (2002) Microporous membranes of polyoxymethylene from a melt-extrusion process:(II) Effects of thermal anneal­ing and stretching on porosity. J Appl Polym Sci 84: 1762-1780
  41. Yu T-H, Wilkes GL (1996) Orientation determi­nation and morphological study of high density polyethylene (HDPE) extruded tubular films: Ef­fect of processing variables and molecular weight distribution. Polymer 37: 4675-4687