Self Healing Polymers for Next Generation Packaging Materials

Abstract

Self healing polymers are a new type of intelligent material that has the potential to repair mechanical damage and restore functional activity independently. Mechanical degradation (microcracking, puncture formation and fatigue failure) in contemporary packaging system greatly decreases the efficiency of the barrier and increases the spoilage of the product and environmental degradation. The integration of self healing properties in to the polymer based packaging materials presents a great initiative in improving durability, increased sustainability and less use of resources. This paper is a critical analysis of the scientific principles, material design principles, production techniques as well as the performance attributes of self healing polymers in next generation packaging applications. Intrinsic systems of healing which are founded on reversible covalent bonding or supramolecular interactions and extrinsic systems founded on encapsulated agents of healing are both considered. Recent developments in biodegradable and recyclable self healing polymer networks are brought up in the context of the goals of the circular economy. There is a presentation of experimental techniques of investigating the efficiency of healing, mechanical recovery, and barrier performance. The findings suggest that dynamic polymer networks which are intrinsic have better repeatability and structural stability than capsule based systems. Nonetheless, the issues of scalability, cost effectiveness and regulatory approvals are still the major obstacles to commercialization. The research concludes that self healing polymers have great potential in changing the packaging materials, as long as material optimization and strategies of industrial integration are developed.