The effect of pulp type on the performance of microfibrillar lignocellulosic bismuth-based active packaging material

Abstract The study aims to investigate the effect of different lignocellulosic pulp on composite properties for active packaging application. Microfibrillated cellulose from bleached and unbleached Kraft thermomechanical (TMP) having cellulose, hemicellulose, lignin, extractive content were used as matrix phase with antimicrobial bis -phosphinato bismuth complex dispersed phase. has thinner fibres observed in SEM images have higher aspect ratio (EMT 109–157) compared TMP 43–51). So, it is more easily fibrillated resulting a strong close network therefore low water vapor transmission rate (WVTR) high tensile index (20–91 g/m 2 .day 59–78 Nm/g respectively) ones (153–261 35–43 respectively). While physical dimension controls mechanical barrier properties, leaching antibacterial performance related bonding matrix. hydrophilicity kraft results weak bond hydrophobic complex, easing its release kill surrounding microbial population thus larger zones inhibition against both Gram-positive Gram-negative bacteria. Therefore, was found be most suitable promising barrier, properties.