Kainulainen Tuomo P, Sirviö Juho A, Sethi Jatin, Hukka Terttu I, Heiskanen Juha P
Research Unit of Sustainable Chemistry, University of Oulu, P.O. Box 3000, FI-90014 Oulu, Finland.
Fibre and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland.
Macromolecules. 2018 Mar 13;51(5):1822-1829. doi: 10.1021/acs.macromol.7b02457. Epub 2018 Feb 21.
A furan-based synthetic biopolymer composed of a bifuran monomer and ethylene glycol was synthesized through melt polycondensation, and the resulting polyester was found to have promising thermal and mechanical properties. The bifuran monomer, dimethyl 2,2'-bifuran-5,5'-dicarboxylate, was prepared using a palladium-catalyzed, phosphine ligand-free direct coupling protocol. A titanium-catalyzed polycondensation procedure was found effective at polymerizing the bifuran monomer with ethylene glycol. The prepared bifuran polyester exhibited several intriguing properties including high tensile modulus. In addition, the bifuran monomer furnished the polyester with a relatively high glass transition temperature. Films prepared from the new polyester also had excellent oxygen and water barrier properties, which were found to be superior to those of poly(ethylene terephthalate). Moreover, the novel polyester also has good ultraviolet radiation blocking properties.
通过熔融缩聚合成了一种由双呋喃单体和乙二醇组成的基于呋喃的合成生物聚合物，发现所得聚酯具有良好的热性能和机械性能。双呋喃单体2,2'-联呋喃-5,5'-二甲酸二甲酯采用钯催化、无膦配体的直接偶联方案制备。发现钛催化的缩聚方法可有效地使双呋喃单体与乙二醇聚合。制备的双呋喃聚酯表现出几种有趣的性能，包括高拉伸模量。此外，双呋喃单体赋予聚酯相对较高的玻璃化转变温度。由这种新型聚酯制成的薄膜还具有优异的氧气和水汽阻隔性能，发现其优于聚对苯二甲酸乙二酯。此外，这种新型聚酯还具有良好的紫外线阻隔性能。
