Polymer declination is the reduction in the physical parcels of a polymer, similar as strength, caused by changes in its chemical composition. Polymers and particularly plastics are subject to declination at all stages of their product life cycle, including during their original processing, use, disposal into the terrain and recycling [1]. The rate of this declination varies significantly; biodegradation can take decades, whereas some artificial processes can fully putrefy a polymer in hours. Technologies have been developed to either inhibit or promote declination. For case, polymers stabilizers insure plastic particulars are produced with the asked parcels, extend their useful dates, and grease their recycling. Again, biodegradable complements accelerate the declination of plastic waste by perfecting its biodegradability. Some forms of plastic recycling can involve the complete declination of a polymer back into monomers or other chemicals.