IMPROVEMENT OF MECHANICAL, THERMAL, BARRIER, WATER SORPTION PROPERTIES OF BIODEGRADABLE ACTIVE PACKAGING MATERIAL

Abstract

This study covered the formation of plastic films using different ratios of PVA and chilosan. It focused on the investrtzulroil of the effects of di tiereiit pO101s cci. l. srhitol and polyethylene glvcol (111,G) and further tested fur mechanical propertv( tensile strength. Modulus of elasticity, and elongation), thermal property .Barrier property (i.e. OFR) .11 was noted that increasing the amount of PVA increases the mean tensile strength and also percentage elongation of the plastic films but addition plasticizer affected the mechanical properties of the plastic film in a different manner like significant increase of' percent elongation and a decrease in teiìsile strength. Unlike with other property the main goal is to enhance mechanical property with maintaining is antimicrobial effect which would provide a potential for packaging application as an active material to extend or maintain shelf life of food product without harming to environment by producing solid waste. The polymer used for this study are fully biodegradable in which chitosan prOvi(IC antibacterial effect to blelnd film and polyvinyl alcohol enhance tensile strength, elastic modulus and elongation at maximum load before fiiilure of material but study of plasticizer with binary blend of PVA and CS shows that elongation at maximum load can he enhanced by adding plasticizer which extends the final failure of blend films. This research emphasis on use of biodegradable polymer with plasticizer which are also biodegradable. in this study, properties of blend films were evaluated and compared with and without plasticizer with plan film of chitosan and polyvinyl alcohol film. SEM is used for evaluation and comparison of microstructure of blend films, CTM is used to compare mechanical property. TGA is used to compare thermal property, FTIR for chemical stucture and XRI) for crystalinity comparison of blend films. Percentage swelling of film were evaluated and compared water absorption test. The result reveled that blend ratio. type of plasticizer and weight percent play a crucial role to enhance their properties and study reveled that these blend film shows antimicrobial effict, and with plasticizer mechanical property Approches to low density polyethylene and their thermal and good barrier propeirty Make them suitable for use in food packaging.