In present study blends of Topas with poly L-lactic acid (PLLA), and hybrid system of Topas/PLLA/HA with various composition was successfully synthesized by solution casting method. Mechanical, morphological, thermal,WVP and antimicrobial properties of these samples were investigated to explore the suitability of these systems for packaging application. DSC thermographs of blends indicates that %crystallinity of blend system increases as compared to pure Topas but remain lower than pure PLLA. Morphology of blend and hybrid system was investigated by Scanning electron microscope. In case of Blend, phase separation depend upon the blendcomposition.At 20%PLLA/topas compositionphase separationisobviousdue to large content of PLLA in Topas. In case of hybrid, increasing HA in matrix (PLLA+topas), increases its agglomeration in matrix system. The mechanical properties were measured by universal testing machine. In case of blend,Tensile strength increases almost double,elongation at break increses 1 order of magnitude while modulus increases 90%.In case of Hybrid modulus increses 42% and tensile strength increases almost double. In order to investigate the chemical structure of Blend as well as hybrid system FTIR analysis was done. In case of blend as well as Hybrid no new peak was identified indicating that no new functional group was formed. This indicate that there is no chemical bonding among such systems.XRD studies shows that blend system is immiscible. In case of Hybrid no identical peak of HA and PLLA is present, indicating well dispersion of HA and reduction in crystallinity of PLLA.WVP decreases by increasing content of HA and PLLA in Topas.Anti-bacterial resistance is determined by using AATCC-147 (modified) standard while anti-fungal resistance is determined by using ASTM G-21. Nano composites, Blends and Hybrid of TOPAS showed resistance against all strains of bacteriaandfungususedinthisstudymakingitapromisingsystem forpackaging.
In present study blends of Topas with poly L-lactic acid (PLLA), and hybrid system of Topas/PLLA/HA with various composition was successfully synthesized by solution casting method. Mechanical, morphological, thermal,WVP and antimicrobial properties of these samples were investigated to explore the suitability of these systems for packaging application. DSC thermographs of blends indicates that %crystallinity of blend system increases as compared to pure Topas but remain lower than pure PLLA. Morphology of blend and hybrid system was investigated by Scanning electron microscope. In case of Blend, phase separation depend upon the blendcomposition.At 20%PLLA/topas compositionphase separationisobviousdue to large content of PLLA in Topas. In case of hybrid, increasing HA in matrix (PLLA+topas), increases its agglomeration in matrix system. The mechanical properties were measured by universal testing machine. In case of blend,Tensile strength increases almost double,elongation at break increses 1 order of magnitude while modulus increases 90%.In case of Hybrid modulus increses 42% and tensile strength increases almost double. In order to investigate the chemical structure of Blend as well as hybrid system FTIR analysis was done. In case of blend as well as Hybrid no new peak was identified indicating that no new functional group was formed. This indicate that there is no chemical bonding among such systems.XRD studies shows that blend system is immiscible. In case of Hybrid no identical peak of HA and PLLA is present, indicating well dispersion of HA and reduction in crystallinity of PLLA.WVP decreases by increasing content of HA and PLLA in Topas.Anti-bacterial resistance is determined by using AATCC-147 (modified) standard while anti-fungal resistance is determined by using ASTM G-21. Nano composites, Blends and Hybrid of TOPAS showed resistance against all strains of bacteriaandfungususedinthisstudymakingitapromisingsystem forpackaging.
