Stanley Johan, Molina-Millán Lidia, Wesdemiotis Chrys, Heeren Ron M A, Zamboulis Alexandra, Zemljič Lidija Fras, Lambropoulou Dimitra A, Bikiaris Dimitrios N
Laboratory of Chemistry and Technology of Polymers and Colors, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.
The Maastricht MultiModal Molecular Imaging Institute (M4i), Division of Imaging Mass Spectrometry, Maastricht University, Universiteitssingel 50, 6229 ER Maastricht, The Netherlands.
J Am Soc Mass Spectrom. 2025 Feb 5;36(2):286-298. doi: 10.1021/jasms.4c00397. Epub 2025 Jan 9.
Biobased poly(ethylene furanoate) (PEF)/poly(ε-caprolactone) (PCL) block copolymers have been synthesized using ring opening polymerization (ROP) of ε-caprolactone (ε-CL) in the presence of PEF in different mass ratios. An increase in intrinsic viscosity is observed for the block copolymers with higher ε-CL content due to the extension of their macromolecular chain. Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MS) was employed to understand the composition and structure of the produced block copolymers. The MS analysis helped to confirm the formation of PEF-PCL copolymers in all cases. Furthermore, tandem mass spectrometry experiments were performed to analyze the intrinsic fragmentation mechanism of neat PEF and PCL (both linear and cyclic) and confirm the block structure and end-groups. Finally, nuclear magnetic resonance results confirmed the composition and microstructure of the block copolymers. The synthesized PEF-PCL block copolymers can be used as a replacement for petroleum derived plastics, especially in the field of food packaging.
通过在不同质量比的聚呋喃二甲酸乙二酯（PEF）存在下，使ε-己内酯（ε-CL）进行开环聚合（ROP），合成了生物基聚（呋喃二甲酸乙二酯）（PEF）/聚（ε-己内酯）（PCL）嵌段共聚物。由于高分子链的伸展，具有较高ε-CL含量的嵌段共聚物的特性粘度有所增加。采用基质辅助激光解吸电离飞行时间质谱（MS）来了解所制备的嵌段共聚物的组成和结构。MS分析有助于在所有情况下确认PEF-PCL共聚物的形成。此外，进行了串联质谱实验，以分析纯PEF和PCL（线性和环状）的固有碎片化机制，并确认嵌段结构和端基。最后，核磁共振结果证实了嵌段共聚物的组成和微观结构。合成的PEF-PCL嵌段共聚物可作为石油衍生塑料的替代品，特别是在食品包装领域。
