Hydrophobic surface functionalization of lignocellulosic jute fabrics by enzymatic grafting of octadecylamine
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/35362 |
Resumo: | Enzymatic grafting of synthetic molecules onto lignins provides a mild and eco-friendly alternative for the functionalization of lignocellulosic materials. In this study, laccase-mediated grafting of octadecylamine (OA) onto lignin-rich jute fabrics was investigated for enhancing the surface hydrophobicity. First, the lignins in jute fabrics were isolated and analyzed in the macromolecular level by MALDI-TOF MS, 1H-NMR, 13C-NMR, and HSQC-NMR. Then, the surface of jute fabrics was characterized by FT-IR, XPS, and SEM. Subsequently, the nitrogen content of jute fabrics was determined by the micro-Kjeldahl method, and the grafting percentage (Gp) and grafting efficiency (GE) of the enzymatic reaction were calculated. Finally, the surface hydrophobicity of the jute fabrics was estimated by contact angle and wetting time measurements. The results indicate that the OA monomers were successfully grafted onto the lignin moieties on the jute fiber surface by laccase with Gp and GE values of 0.712% and 10.571%, respectively. Moreover, the modified jute fabrics via OA-grafting showed an increased wetting time of 18.5 min and a contact angle of 116.72°, indicating that the surface hydrophobicity of the jute fabrics increased after the enzymatic grafting modification with hydrophobic OA molecules. |
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Hydrophobic surface functionalization of lignocellulosic jute fabrics by enzymatic grafting of octadecylaminejutelaccasegraftingEngenharia e Tecnologia::Biotecnologia IndustrialScience & TechnologyEnzymatic grafting of synthetic molecules onto lignins provides a mild and eco-friendly alternative for the functionalization of lignocellulosic materials. In this study, laccase-mediated grafting of octadecylamine (OA) onto lignin-rich jute fabrics was investigated for enhancing the surface hydrophobicity. First, the lignins in jute fabrics were isolated and analyzed in the macromolecular level by MALDI-TOF MS, 1H-NMR, 13C-NMR, and HSQC-NMR. Then, the surface of jute fabrics was characterized by FT-IR, XPS, and SEM. Subsequently, the nitrogen content of jute fabrics was determined by the micro-Kjeldahl method, and the grafting percentage (Gp) and grafting efficiency (GE) of the enzymatic reaction were calculated. Finally, the surface hydrophobicity of the jute fabrics was estimated by contact angle and wetting time measurements. The results indicate that the OA monomers were successfully grafted onto the lignin moieties on the jute fiber surface by laccase with Gp and GE values of 0.712% and 10.571%, respectively. Moreover, the modified jute fabrics via OA-grafting showed an increased wetting time of 18.5 min and a contact angle of 116.72°, indicating that the surface hydrophobicity of the jute fabrics increased after the enzymatic grafting modification with hydrophobic OA molecules.National Natural Science Foundation of China (51173071), Program for NewCentury Excellent Talents in University (NCET-12-0883), Program for Changjiang Scholars and Innovative Research Team in Uni-versity (IRT1135), Fundamental Research Funds for the Central Universities (JUSRP51312B), Graduate Student Innovation Plan of Jiangsu Province of China (CXZZ13 0752) and Doctor CandidateFoundation of Jiangnan University of China (JUDCF13023).Elsevier B.V.Universidade do MinhoDong, AixueFan, XuerongWang, QiangYu, YuanyuanPaulo, Artur Cavaco2015-082015-08-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/35362engAixue Dong; Xuerong Fan; Qiang Wang; Yuanyuan Yu; Paulo, Artur Cavaco, Hydrophobic surface functionalization of lignocellulosic jute fabrics by enzymatic grafting of octadecylamine. International Journal of Biological Macromolecules, 79, 353-362, 20150141-813010.1016/j.ijbiomac.2015.05.00725987460http://www.sciencedirect.com/science/article/pii/S0141813015003335info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:24:02Zoai:repositorium.sdum.uminho.pt:1822/35362Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:17:54.416672Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Hydrophobic surface functionalization of lignocellulosic jute fabrics by enzymatic grafting of octadecylamine |
title |
Hydrophobic surface functionalization of lignocellulosic jute fabrics by enzymatic grafting of octadecylamine |
spellingShingle |
Hydrophobic surface functionalization of lignocellulosic jute fabrics by enzymatic grafting of octadecylamine Dong, Aixue jute laccase grafting Engenharia e Tecnologia::Biotecnologia Industrial Science & Technology |
title_short |
Hydrophobic surface functionalization of lignocellulosic jute fabrics by enzymatic grafting of octadecylamine |
title_full |
Hydrophobic surface functionalization of lignocellulosic jute fabrics by enzymatic grafting of octadecylamine |
title_fullStr |
Hydrophobic surface functionalization of lignocellulosic jute fabrics by enzymatic grafting of octadecylamine |
title_full_unstemmed |
Hydrophobic surface functionalization of lignocellulosic jute fabrics by enzymatic grafting of octadecylamine |
title_sort |
Hydrophobic surface functionalization of lignocellulosic jute fabrics by enzymatic grafting of octadecylamine |
author |
Dong, Aixue |
author_facet |
Dong, Aixue Fan, Xuerong Wang, Qiang Yu, Yuanyuan Paulo, Artur Cavaco |
author_role |
author |
author2 |
Fan, Xuerong Wang, Qiang Yu, Yuanyuan Paulo, Artur Cavaco |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Dong, Aixue Fan, Xuerong Wang, Qiang Yu, Yuanyuan Paulo, Artur Cavaco |
dc.subject.por.fl_str_mv |
jute laccase grafting Engenharia e Tecnologia::Biotecnologia Industrial Science & Technology |
topic |
jute laccase grafting Engenharia e Tecnologia::Biotecnologia Industrial Science & Technology |
description |
Enzymatic grafting of synthetic molecules onto lignins provides a mild and eco-friendly alternative for the functionalization of lignocellulosic materials. In this study, laccase-mediated grafting of octadecylamine (OA) onto lignin-rich jute fabrics was investigated for enhancing the surface hydrophobicity. First, the lignins in jute fabrics were isolated and analyzed in the macromolecular level by MALDI-TOF MS, 1H-NMR, 13C-NMR, and HSQC-NMR. Then, the surface of jute fabrics was characterized by FT-IR, XPS, and SEM. Subsequently, the nitrogen content of jute fabrics was determined by the micro-Kjeldahl method, and the grafting percentage (Gp) and grafting efficiency (GE) of the enzymatic reaction were calculated. Finally, the surface hydrophobicity of the jute fabrics was estimated by contact angle and wetting time measurements. The results indicate that the OA monomers were successfully grafted onto the lignin moieties on the jute fiber surface by laccase with Gp and GE values of 0.712% and 10.571%, respectively. Moreover, the modified jute fabrics via OA-grafting showed an increased wetting time of 18.5 min and a contact angle of 116.72°, indicating that the surface hydrophobicity of the jute fabrics increased after the enzymatic grafting modification with hydrophobic OA molecules. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-08 2015-08-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1822/35362 |
url |
http://hdl.handle.net/1822/35362 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Aixue Dong; Xuerong Fan; Qiang Wang; Yuanyuan Yu; Paulo, Artur Cavaco, Hydrophobic surface functionalization of lignocellulosic jute fabrics by enzymatic grafting of octadecylamine. International Journal of Biological Macromolecules, 79, 353-362, 2015 0141-8130 10.1016/j.ijbiomac.2015.05.007 25987460 http://www.sciencedirect.com/science/article/pii/S0141813015003335 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799132633188270080 |