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One-pot enzyme-catalyzed synthesis of dual-functional polyester macromers towards surface-active hydrophobic films

机译：一锅酶催化双功能聚酯大分子单体对表面活性疏水膜的合成

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Selective enzyme catalysis is a valuable tool for the processing of monomers into value-added materials. In the present study natural resources were used to retrieve an ω-hydroxy fatty acid monomer containing an epoxide functionality. A procedure was developed for the synthesis of dual-functional oligomers by utilizing lipase catalysis in a one-pot synthesis route. The chemoselectivity of the enzyme allowed addition of thiol monomers to the retrieved epoxy monomers, without harming the epoxides, achieving a thiol–epoxy functional polyester resin. The synthesis reached full conversion (>99%) after 8 h. It was possible to selectively crosslink the resin through UV-initiated cationic polymerization of the epoxides into thiol–functional thermosets. The curing performance was followed in situ by real-time FTIR. The thiol groups on the surface of the film were accessible for post-modification.
机译：选择性酶催化是将单体加工成增值材料的有价值的工具。在本研究中，自然资源被用于检索含有环氧官能团的ω-羟基脂肪酸单体。开发了一种通过一锅合成路线利用脂肪酶催化合成双功能低聚物的方法。酶的化学选择性允许将硫醇单体添加到回收的环氧单体中，而不会损害环氧化物，从而获得了硫醇-环氧官能聚酯树脂。 8小时后，合成达到完全转化（> 99％）。通过紫外线引发的环氧化物的阳离子聚合成硫醇官能的热固性树脂，可以选择性地使树脂交联。实时FTIR实时监测固化性能。膜表面上的巯基可用于后修饰。

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