Investigative analysis of the influence reprocessing has on the CIEL ~*a~*b~* tristimulus color values of special effect thermochromic polypropylene

摘要

The intent of this investigation is to determine the feasibility of achieving optimal color quality when reprocessing "special effect" thermochromic polypropylene. The investigation involves blending, extruding and molding samples of virgin and reprocessed "special effect" thermochromic polypropylene. All samples undergo visual, as well as CIEL ~*a~*b~* Tristimulus color value testing. Analysis of the visual and numeric data will determine whether the color values of the reprocessed material remain within the color space established by the standard. If the investigation proves that the color values are within the acceptable color range, then recycling of the material would be both economically and environmentally beneficial.