Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/17302
Título: | Polyoxometalate/laccase-mediated oxidative polymerization of catechol for textile dyeing |
Autor(es): | Kim, Suyeon Silva, Carla Manuela Pereira Marinho da Evtuguin, D. V. Gamelas, José A. F. Paulo, Artur Cavaco |
Palavras-chave: | Polyoxometalate Laccase Catechol Mediator Polymerization 9Laccase |
Data: | 2011 |
Editora: | Springer |
Revista: | Applied Microbiology and Biotechnology |
Resumo(s): | The synergistic effect between polyoxometalates (POMs), namely K5[SiW11VVO40]·11H2O and H5[PMo10 VV2O40]·13H2O and laccase from ascomycete Myceliophthora thermophila has been employed for the first time in oxidative polymerization of catechol. Such a laccase-mediator system allowed the formation of a relatively high molecular weight polycatechol as confirmed by size exclusion chromatography and electrospray ionization mass spectrometry (ESI-MS) (3990 Da when using K5[SiW11VVO40]·11H2O and 3600 Da with H5[PMo10VV 2O40]·13H2O). The synthesized polymers were applied as dyes for the dyeing of flax fabrics. The color intensity of flax fabrics colored with polymer solutions was evaluated by diffuse reflectance spectrophotometry via k/s measurements (+10% of fixation ratio). A new synthetic process allowed a dyeing polymer, provided upon flax coloration, better color fixation and color resistance when compared to that obtained by conventional synthesis with laccase solely or with addition of organic mediator (1-hydroxybenzotriazole). |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/17302 |
DOI: | 10.1007/s00253-010-2932-5 |
ISSN: | 0175-7598 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | DET/2C2T - Artigos em revistas internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
2010 Polyoxometalate-laccase-mediated oxidative polymerization.pdf | Polyoxometalate/laccase-mediated oxidative polymerization of catechol for textile dyeing | 516,16 kB | Adobe PDF | Ver/Abrir |