Feasibility of Solid-State Postpolymerization on Fossil- and Bio-Based Poly(butylene succinate) Including Polymer Upcycling Routes

Fossil-based and true bio-based poly­(butylene succinate) (PBS) prepolymers were synthesized and submitted to solid-state polymerization (SSP) in the proximity of the polyester melting point (T m), for reaction times up to 29 h under flowing nitrogen. SSP acted as a postcrystallization process, impa...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2016-05, Vol.55 (20), p.5832-5842
Main Authors: Papaspyrides, Constantine D, Vouyiouka, Stamatina, Georgousopoulou, Ioanna-Nektaria, Marinkovic, Sinisa, Estrine, Boris, Joly, Catherine, Dole, Patrice
Format: Article
Language:English
Subjects:
Food engineering
Life Sciences
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Summary:Fossil-based and true bio-based poly­(butylene succinate) (PBS) prepolymers were synthesized and submitted to solid-state polymerization (SSP) in the proximity of the polyester melting point (T m), for reaction times up to 29 h under flowing nitrogen. SSP acted as a postcrystallization process, imparting an increase of the PBS melting point up to 126 °C from a starting T m of 112–114 °C. Adding a precrystallization step prior SSP even resulted in a 2.5 times increase of the initial MW and a T m shift up to 128 °C. Furthermore, the effect of most critical process parameters on the SSP feasibility and effectiveness was assessed, so as to launch an appropriate operation profile. End-group imbalance turned out to be the most significant key parameter for PBS polymerizability, and various attempts were made toward correcting it. Finally, SSP was examined as a PBS recycling technique and efficiently “revived” hydrolyzed PBS structures.
ISSN:0888-5885
1520-5045
DOI:10.1021/acs.iecr.6b00588