Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/16432
Título: | Enzymatic surface hydrolysis of PET enhances bonding in PVC coating |
Autor(es): | Almansa, E. Heumann, S. Eberl, A. Fischer-Colbrie, Gudrun Martinkova, L. Marek, J. Paulo, Artur Cavaco Guebitz, G. M. |
Palavras-chave: | Beauveria brongniartii Polyesterase PVC PET |
Data: | 2008 |
Editora: | Informa Healthcare |
Revista: | Biocatalysis and Biotransformation |
Resumo(s): | The effect of polyesterase preparations from Thermomyces lanuginosus and Beauveria brongniartii on the hydrophilicity of PET materials was assessed. As a result of polyesterase treatment the hydrophilicity of PET fabrics was increased by up to 8 cm in terms of rising height with increases in surface tension from 6.2 mNm (heat-inactivated control samples) to above 8 mNm. Both enzymes were able to increase the amount of hydroxyl groups on PET from 90 to a maximum of 182 mmol kg-1, while only the B. brongniartii polyesterase released significant amounts of terephthalic acid from PET. Enzymatic surface hydrolysis of PET increased the bonding strength in PVC coating to 13.40 daN 5cm-1 using 0.5% adhesive compared to 11.5 daN 5cm-1 obtained without enzyme pretreatment and 6% of adhesive. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/16432 |
DOI: | 10.1080/10242420802357613 |
ISSN: | 1024-2422 |
Versão da editora: | http://dx.doi.org/10.1080/10242420802357613 |
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 | |
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2008 Enzymatic surface hydrolysis of PET enhances bonding in PVC coating.pdf | Enzymatic surface hydrolysis of PET enhances bonding in PVC coating | 88,51 kB | Adobe PDF | Ver/Abrir |