Abstract
Two commercial polyesters, a virgin (VPET) and a recycled (RPET), were mechanically recycled in a closed loop with a pilot recycling line designed for bottle-to-bottle recycling. The stretchability after one, two and four loops were measured by uni-axial drawing experiments above the glass transition temperatures of the polymers. Thanks to the time-temperature equivalence principle, the materials were deformed in a physical state equivalent to the one encountered during the injection stretch-blow molding (ISBM) process. The mechanical recycling of the commercial VPET leads to a significant loss of drawability. The lower drawability of RPETs (commercial or produced by the pilot line) could explain the more numerous bottles explosions during ISBM. A microstructural interpretation is proposed through SEC chromatography and DSC analysis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
