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https://hdl.handle.net/1822/44725
Título: | Jute hydrophobization via laccase-catalyzed grafting of fluorophenol and fluoroamine |
Autor(es): | Wu, Huimin Noro, Jennifer Wang, Qiang Fan, Xuerong Silva, Carla Cavaco-Paulo, Artur |
Data: | 2016 |
Editora: | Royal Society of Chemistry |
Revista: | RSC Advances |
Citação: | Wu, Huimin; Noro, Jennifer; Wang, Qiang; Fan, Xuerong; Silva, Carla; Cavaco-Paulo, Artur, Jute hydrophobization via laccase-catalyzed grafting of fluorophenol and fluoroamine. RSC Advances, 6(93), 90427-90434, 2016 |
Resumo(s): | Two fluorinated monomers, 4-[4-(trifluoromethyl)phenoxy]phenol (TFMPP) and 1H,1H-perfluorononylamine (PFNL), were efficiently grafted onto the exposed lignin of jute's surface by a laccase mediated reaction. Their grafting onto the lignin-exposed jute was demonstrated by Fourier transform infrared-attenuated total reflection spectroscopy (FTIR-ATR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The coupling of fluorophenol and fluoramine onto a complex lignin model compound (2-methoxy-4-propylphenol) (MP) was confirmed by nuclear magnetic resonance (1H NMR). Laccase-catalyzed grafting of both fluorinated monomers led to 41.94% and 46.35% increase in contact angle for TFMPP and PFNL, respectively. An oil static contact angle of 117.16[degree] and oil wetting time values higher than 30 min obtained for PFNL-grafted jute also demonstrated the oleophobic behavior of jute samples after laccase-mediated oxidation. The laccase-related oxidation and formation of homopolymers and copolymers was also confirmed by UV-visible spectra of treatment solutions supernatant in the UV-visible region (200-700 nm). |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/44725 |
DOI: | 10.1039/C6RA17687A |
ISSN: | 2046-2069 |
e-ISSN: | 2046-2069 |
Versão da editora: | http://pubs.rsc.org/en/journals/journalissues/ra |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_45174_1.pdf Acesso restrito! | 1,55 MB | Adobe PDF | Ver/Abrir |