Originally Aired - Monday, May 6 • 2:00 PM - 2:30 PM
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Location: S10089 (Bottling Stage)
Title: An Inside Look at a Novel Purification Process for Recycling Polypropylene (PP)
Description:
Investigate the manufacturing and final properties of advanced recycled polypropylene (PP). The process of recycling polypropylene is neither chemical nor mechanical but rather a patented purification process that uses molecular washing. In the process, the PP molecules remain intact, and impurities like color, additives and odors are removed. The resultant recycled PP (rPP) has virgin-like properties comparable to homopolymer PP. Interestingly, rPP has a slightly better Izod impact resistance at room temperature than virgin homopolymer PP. Also, we will show you the feasibility of blending rPP with other virgin resins that have MFR = 2, 40 and 100. By adding special additives, e.g., impact modifiers, clarifiers, flow enhancements, etc., selected properties of rPP were modified to mimic those of PP impact copolymer or random copolymer. We will show that by adding a specific impact modifier, the Izod impact resistance at room temperature of rPP was doubled. Moreover, by using the right type of clarifiers, the clarity of rPP was improved to comparable levels to that of PP random copolymers. Furthermore, we were able to increase the MFR of rPP from 8 to 100 by using an appropriate visbreaking additive. We will show that tensile properties were not compromised during the visbreaking process, and this high MFR rPP is suitable for thin wall injection molding applications or for fiber spinning.
Level: Expo Pass, Expo Plus, Expo Premier
Type: Bottling Stage
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