Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/34712

TitleHRP-mediated polyacrylamide graft modification of raw jute fabric
Author(s)Liu, Ruirui
Dong, Aixue
Fan, Xuerong
Wang, Qiang
Yu, Yuanyuan
Paulo, Artur Cavaco
KeywordsHorseradish peroxidase
Acrylamide
Hydrophilicity
Graft polymerization
Jute fabric
Issue dateJun-2015
PublisherElsevier B.V.
JournalJournal of Molecular Catalysis B: Enzymatic
Abstract(s)The horseradish peroxidase (HRP)/hydrogen peroxide system can catalyze the free-radical polymerization of aromatic compounds such as lignins. In this study, to improve the hydrophilicity of lignin-rich jute fabrics, acrylamide (AM) was grafted onto their surface by HRP-mediated oxidative polymerization. The resulting AM-lignin graft polymer in jute fibers, from which the lignin was removed by extracting with dioxane, was characterized by gel permeation chromatography, elemental analysis, matrix-assisted laser desorption/ionization mass spectromrtry, nuclear magnetic resonance, scanning electron microscopy, and Fourier transform infrared spectroscopy. The results show that AM was grafted to the jute fiber by HRP. Furthermore, the hydrophilicity of the fabrics was determined in terms of wetting time, balance moisture regain, and static contact angle. Compared to the control sample, the wetting time, balance moisture regain, and static contact angle of the grated fabrics varied from 11.62 min to 7.45 min, from 9.78% to 10.40%, and from 122.30° to 92.84°, respectively, indicating that the hydrophilicity of the raw jute fabric improved. The modification conditions of the HRP-catalyzed AM-grafting reaction were optimized in terms of the nitrogen content of the jute fabrics.
TypeArticle
URIhttp://hdl.handle.net/1822/34712
DOI10.1016/j.molcatb.2015.03.004
ISSN1381-1177
e-ISSN1381-1177
Publisher versionhttp://www.elsevier.com/locate/issn/13811177
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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