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Polyamide grafting onto ethylene-vinyl alcohol copolymer

  • Hamid Salehi-Mobarakeh EMAIL logo , Ali Yadegari , Javad Didehvar and Fahimeh Khakzad-Esfahlan
Published/Copyright: November 7, 2013
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Journal of Polymer Engineering
From the journal Journal of Polymer Engineering Volume 33 Issue 9

Abstract

Ethylene-vinyl alcohol copolymers (EVOH), with appropriate barriers and processability, can be chemically modified through vinyl alcohol units. Amides and polyamides based on condensation reactions of adipoyl chloride and hexamethylenediamine were grafted onto EVOH. Grafting was characterized by contact angle measurement, attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), nuclear magnetic resonance spectroscopy (NMR) and scanning electron microscopy (SEM). Amide peaks at 3302 cm-1 corresponding to –NH bond stretching and the absorption of HN-CH2 at 7.8 ppm, were observed from ATR-FTIR and NMR, respectively, as a result of grafting. SEM showed the formation of amide structures as bundles, agglomerates and needle-like particles. Differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA) showed considerable changes in onset of melt temperature, crystallinity and various transitions in grafted EVOH, showing an effective alteration in the physical properties compared with the virgin resin. Nylon grafted EVOH can be considered as a potential compatibilizer in polyethylene (PE)/polyamide blends via increasing interactions at the interface.

Keywords: compatibilizer; EVOH; grafting; modification; nylon-6,6
Corresponding author: Hamid Salehi-Mobarakeh, Iran Polymer and Petrochemical Institute, P.O. Box: 14965/115, Tehran, Iran, e-mail:

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Received: 2013-4-27
Accepted: 2013-9-11
Published Online: 2013-11-07
Published in Print: 2013-12-01

©2013 by Walter de Gruyter Berlin Boston

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https://doi.org/10.1515/polyeng-2013-0104
Keywords for this article
compatibilizer; EVOH; grafting; modification; nylon-6,6

Articles in the same Issue

  1. Masthead
  2. Masthead
  3. Original articles
  4. Solvent-initiator compatibility and sensitivity of conversion of styrene homo-polymerization
  5. Synthesis and effect of secondary dopant on the conductivity of conducting polymer polyaniline
  6. Potential utilization of recycled PET in comparison with liquid crystalline polymer as an additive for HDPE based composite fibers: Comparative investigation on mechanical performance of cross-ply laminates
  7. Study on the effect of virgin and recycled chloroprene rubber (vCR and rCR) on the properties of natural rubber/chloroprene rubber (NR/CR) blends
  8. Synthesis of a novel silicone based copolymeric surfactant and application in emulsion polymerization
  9. Post-irradiation effects on gamma-irradiated nylon 6,12 fibers
  10. Preparation and properties of sodium alginate films
  11. Study on crystallization and compatibility of nitrile butadiene rubber (NBR)/polyoxymethlene (POM) blends modified by a polyether polyol
  12. Polyamide grafting onto ethylene-vinyl alcohol copolymer
  13. Acoustic parameter investigation of polyvinyl acetate with acetic acid using ultrasonic technique
  14. Electrospun cellulosic structure nanofibre based on rice straw
  15. Function of silicon oil in the castor oil based rigid polyurethane foams
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