Montanari Ulisse, Cocchi Davide, Brugo Tommaso Maria, Pollicino Antonino, Taresco Vincenzo, Romero Fernandez Maria, Moore Jonathan C, Sagnelli Domenico, Paradisi Francesca, Zucchelli Andrea, Howdle Steven M, Gualandi Chiara
School of Chemistry, University Park University of Nottingham, Nottingham NG7 2RD, UK.
Department of Chemistry "Giacomo Ciamician" and INSTM UdR of Bologna, University of Bologna, Via Selmi, 2, 40126 Bologna, Italy.
Polymers (Basel). 2021 May 30;13(11):1804. doi: 10.3390/polym13111804.
New bio-based polymers capable of either outperforming fossil-based alternatives or possessing new properties and functionalities are of relevant interest in the framework of the circular economy. In this work, a novel bio-based polycarvone acrylate di-epoxide (PCADE) was used as an additive in a one-step straightforward electrospinning process to endow the fibres with functionalisable epoxy groups at their surface. To demonstrate the feasibility of the approach, poly(vinylidene fluoride) (PVDF) fibres loaded with different amounts of PCADE were prepared. A thorough characterisation by TGA, DSC, DMTA and XPS showed that the two polymers are immiscible and that PCADE preferentially segregates at the fibre surface, thus developing a very simple one-step approach to the preparation of ready-to-use surface functionalisable fibres. We demonstrated this by exploiting the epoxy groups at the PVDF fibre surface in two very different applications, namely in epoxy-based carbon fibre reinforced composites and membranes for ω-transaminase enzyme immobilisation for heterogeneous catalysis.
在循环经济框架下，能够超越化石基替代品或具备新特性和功能的新型生物基聚合物具有重要意义。在这项工作中，一种新型生物基聚香芹酮丙烯酸酯二环氧化物（PCADE）被用作添加剂，用于一步直接静电纺丝过程，使纤维表面带有可功能化的环氧基团。为证明该方法的可行性，制备了负载不同量PCADE的聚偏氟乙烯（PVDF）纤维。通过热重分析（TGA）、差示扫描量热法（DSC）、动态热机械分析（DMTA）和X射线光电子能谱（XPS）进行的全面表征表明，这两种聚合物不相容，且PCADE优先在纤维表面偏析，从而开发出一种非常简单的一步法来制备即用型表面可功能化纤维。我们通过在两种截然不同的应用中利用PVDF纤维表面的环氧基团证明了这一点，即用于环氧基碳纤维增强复合材料以及用于非均相催化的ω-转氨酶固定化的膜。
