Abstract
A fast, robust, and convenient method for quantitative determination of polyamide-6 (PA6) and polyamide-66 (PA66) in plastic wastes is presented. The method includes a straightforward procedure for...
Highlights
Recent trends in plastic waste management are focused on improved plastic waste recycling because this could have a long-term impact on reduced greenhouse gas emissions, dependence on finite petroleum resources, and disposal of plastic wastes in the environment and will recover the economic value of plastic wastes.[1]
The polymer waste is converted to the feedstock for monomers, fuel production, or other value-added products and intermediates.[2−6] chemical recycling is a promising alternative to recycle composites, containing reinforcement additives, which are otherwise difficult to recycle by mechanical methods.[1,7]
For determination of the PA content in plastic waste, we developed a fast degradation method, whereby PA6 completely depolymerizes into 6-ACA and PA66 into adipic acid (AA) and HMDA (Figure 1)
Summary
Recent trends in plastic waste management are focused on improved plastic waste recycling because this could have a long-term impact on reduced greenhouse gas emissions, dependence on finite petroleum resources, and disposal of plastic wastes in the environment and will recover the economic value of plastic wastes.[1]. Polyamide-6 (PA6) and polyamide-66 (PA66) are versatile semicrystalline polymers with high chemical resistance and good thermal and mechanical properties.[9] They are produced from fossil resources, usually in the form of fibers or thermoplastics, for the use in a broad scope of applications (textile, automotive, electrical, electronic, construction, packaging, coatings, and other industries) Both PA types are produced on an annual worldwide multimillion ton scale, and the production is estimated to be continuously growing, which is associated with increasing waste management issues of these nonbiodegradable polymers.[3,10] they are often used as PA blends or in combination with other polymers like polypropylene or polyethylene as well as composite and multicomponent materials such as carpets, which further complicate PA recycling processes.[7,9]
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