Abstract
ABSTRACTIn this study, a series of reactive block copolymers of glycidyl methacrylate (G), styrene (S), and maleic anhydride (MA) (GS–SMA–GS), with well‐defined properties and high number average functionalities, is presented. They were synthesized through reversible addition–fragmentation chain transfer polymerization (RAFT) and evaluated as chain extenders in reactive extrusion recycling of poly(ethylene terephthalate) (rPET). Modification of the process using GS–SMA–GS results in increased melt flow and intrinsic viscosities higher than those of conventional rPET. Results show that increasing epoxide content makes chain organization in rPET difficult and promotes lower crystallization rates and lower degrees of crystallinity, both of which are characteristics suited to produce preforms with the desired clarity. Chain‐extended rPET exhibits improved rheological characteristics with increasing glycidyl methacrylate content. Chain‐extended rPET using GS–SMA–GS shows enhanced complex viscosity; elastic and viscous modules, which are indicative of high melt elasticity, improved mechanical properties, and processability. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46771.
Sign-in/Register to access full text options 
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.
