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Antibacterial electrospun PVA/Enzymatic synthesized poly(catechol) nanofibrous ...

Coelho, Dora; Sampaio, Ana; Silva, Carla J. S. M.; Felgueiras, Helena Prado; Amorim, M. T. Pessoa de; Zille, Andrea

Two different nanofibrous antibacterial membranes containing enzymatically synthesized poly(catechol) (PC) or silver nitrate (AgNO3, positive control) blended with poly(vinyl alcohol) (PVA) and electrospun onto a poly(vinylidene fluoride) (PVDF) basal disc to generate thin-film composite mid-layers were produced for water ultrafiltration applications. The developed membranes were thoroughly characterized in ter...


Screening of lipophilic and phenolic extractives from different morphological p...

Vilela, Carla; Santos, Sonia A. O.; Coelho, Dora; Silva, Artur M. S.; Freire, Carmen S. R.; Neto, Carlos Pascoal; Silvestre, Armando J. D.

The chemical composition of the lipophilic and phenolic extractives of the leaves, stems and roots of the salt marsh plant Halimione portulacoides from the Aveiro Lagoon was thoroughly investigated by gas chromatography-mass spectrometry (GC-MS) and ultra-high-performance liquid chromatography-mass spectrometry (UHPLC-MS), respectively. The lipophilic fraction of leaves and stems is mainly composed of long chai...


Reversible click chemistry at the service of macromolecular materials. Part 4: ...

Gandini, Alessandro; Silvestre, Armando; Coelho, Dora

The polymerisation of furan monomers and the exploitation of some of the chemical peculiarities of the furan heterocycle have generated a wide diversity of macromolecular materials based on renewable resources. In particular, the application of the DA cycloaddition to the macromolecular chemistry opened new ways to synthesize materials with unique properties, such as self-mendability and network recyclability. ...


Reversible click chemistry at the service of macromolecular materials

Gandini, Alessandro; Silvestre, Armando J. D.; Coelho, Dora

The application of the reversible Diels-Alder (DA) reaction to the realm of furan polymers has recently bloomed, because of its potential for the preparation of a wide variety of novel macromolecular materials based on renewable resources, possessing, among other properties, thermoreversible, mendable and recycling features. In this study, the synthesis and characterisation of novel furan-maleimide monomers, vi...



Materials from renewable resources based on furan monomers and furan chemistry:...

Gandini, Alessandro; Coelho, Dora; Gomes, Mónica; Reis, Bruno; Silvestre, Armando

The polymerisation of furan monomers and the exploitation of some of the chemical peculiarities of the furan heterocycle have generated a wide diversity of macromolecular materials based on renewable resources. We present here recent contributions to this field, including ongoing studies on the synthesis and characterisation of novel furan polyesters and on the application of the Diels-Alder reaction to the pre...


Reversible click chemistry at the service of macromolecular materials. Part 1: ...

Gandini, Alessandro; Coelho, Dora; Silvestre, Armando J.D.

The model Diels-Alder reaction of furfuryl acetate with N-methylmaleimide and the linear polymerization of the corresponding difunctional monomers were followed by both UV and (1)H NMR spectroscopy. The results obtained from this study provided clear-cut indications about the most appropriate conditions to be applied in the preparation of novel macromolecular materials based in part oil renewable resources and ...


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