The effect of organo-modified montmorillonite on mechanical and barrier properties of linear low-density polyethylene/low-density polyethylene blend films

Abstract

In this study, the effect of organo-modified montmorillonite on mechanical and gas barrier properties of nanocomposite films of linear low-density polyethylene/lowdensity polyethylene blends was investigated. Two different compatibilizers, polyethylene grafted maleic anhydride and polypropylene grafted maleic anhydride, were used to obtain a better dispersion of the nanoclay in the blends. The blend samples containing various amounts of the clay were melt compounded and then blown to films. Mechanical properties of the films were studied in machine and transverse directions. A constant volume-variable pressure method was used to determine the gas permeability of the films. Addition of the 4 parts per hundred nanoclay improved the tensile modulus in machine direction by about 59% and that in transverse direction by about 100%. It further reduced the oxygen permeability by about 38%.

Nanocomposite films containing organoclay nanoparticles as an antimicrobial (active) packaging for potential food application

“…Compatibilizers for surface modification of clay and reducing different affinities between the components are necessary. Hence several compatibilizers have been used in the preparation of PE nanocomposites, including PE‐grafted maleic anhydride (PE‐g‐MA) (Attaran et al, ; Beigmohammadi et al, ), polypropylene‐grafted maleic anhydride (PP‐g‐MA) (Khalili, Masoomi, & Bagheri, ), PE‐grafted acrylic acid (Supri, Salmah, & Hazwan, ), oxidized PE (Durmus, Woo, Kasgoz, Macosko, & Tsapatsis, ), and so on.…”

Influence of maleic anhydride-grafted polyethylene compatibiliser on the tensile, oxygen barrier and thermal properties of rice husk and nanoclay-filled low-density polyethylene composite films

“…Nanoclays are considered one of the main particles for reinforcing polymeric matrices and promoting new and enhanced Majeed et al 121 properties, such as enhanced toughness, stiffness, gas barrier and flameresistant characteristics. [7][8][9][10] The key to such performance rests in the ability to delaminate and disperse nanoclays individually in the matrix. It is worth mentioning that nanoclay-filled polymeric materials have been accepted as a way to develop materials that are mechanically stronger and have higher barrier.…”

Mechanical and Oxygen Barrier Properties of LDPE/MMT/MAPE and LDPE/MMT/EVA Nanocomposite Films: A Comparison Study

“…These impermeable obstacles force the diffusing molecules to follow a tortuous path, which in turn, retards/reduce the gas molecule diffusion. 32 Furthermore, increasing the MAPE concentration improves the interfacial adhesion of clay platelets with the matrix material that leads to the improved barrier properties. These findings are consistent with our XRD observations and mechanical measurements.…”