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

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• 作者：Constantine D. Papaspyrides ; Stamatina Vouyiouka ; Ioanna-Nektaria Georgousopoulou ; Sinisa Marinkovic ; Boris Estrine ; Catherine Joly ; Patrice Dole
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2016
• 出版时间：May 25, 2016
• 年：2016
• 卷：55
• 期：20
• 页码：5832-5842
• 全文大小：434K
• 年卷期：0
• ISSN：1520-5045

文摘

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.