Enhanced Mechanical and Barrier Characteristics of LLDPE/TPS/OMMTPackaging Film Utilizing POE-g-IA or POE-g-MA

This study investigates the impact of two functionalized polyethylene-octene elastomers, namelypolyethylene-octene elastomer grafted with itaconic acid (POE-g-IA) and polyethylene-octeneelastomer grafted with maleic anhydride (POE-g-MA), on the barrier and mechanical properties of anovel nanocomposite composed of linear low-density polyethylene (LLDPE), thermoplastic starch(TPS), and montmorillonite, utilizing a melt blending approach. Characterization of thefunctionalized POE and resulting nanocomposites derived from LLDPE, TPS, and clay involvedFourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), mechanical, and barrieranalyses. XRD analysis revealed a notable increase in the d-spacing of the nano clay plate upon theinclusion of POE-g-IA. Moreover, morphological assessments demonstrated enhanced interfacialadhesion of starch/LLDPE with the incorporation of functionalized POE. Evaluation of themechanical properties of the nanocomposites indicated that POE-g-IA notably enhanced tensilestrength, young modulus, elongation at break, and dart impact of the LLDPE/TPS/nano claycomposite compared to POE-g-MA. The improved dispersion of the nano clay plate with POE-g-IAcorresponded to a reduction in oxygen gas permeability relative to other functionalized POEs.

کلیدواژه ها:

Nanocomposite ، Functional polymer ، Biodegradable film ، Starch/LLDPE