Quantitative analysis of polyolefin blends from plastics recycled via dissolution

Recycling of plastics by dissolving offers more options and better product quality than recycling by melting processes. First of all the polymer is less strained in the solution than in the melt. The second reason is the high purity of products obtained via selective dissolution. The recycling of polyolefines by dissolving has been developed to stage where the recycled polymer can be utilized similar to new polymers for production. This aim was reached amongst others, by the separation of the three polyolefines LDPE, HDPE and PP. Furthermore this paper describes a method for quantitative analysis of polyolefine blends by means of the thermal method DSC.