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TitleEnzymatic modification of jute fabrics for enhancing the reinforcement in jute/PP composites
Author(s)Dong, Aixue
Li, Fan
Fan, Xuerong
Wang, Qiang
Yu, Yuanyuan
Wang, Ping
Yuan, Jiugang
Cavaco-Paulo, Artur
Keywordsinterfacial compatibility
polymer composites
surface modification
Issue dateApr-2018
PublisherSAGE Publications
JournalJournal of Thermoplastic Composite Materials
CitationDong, Aixue; Li, Fan; Fan, Xuerong; Wang, Qiang; Yu, Yuanyuan; Wang, Ping; Yuan, Jiugang; Cavaco-Paulo, Artur, Enzymatic modification of jute fabrics for enhancing the reinforcement in jute/PP composites. Journal of Thermoplastic Composite Materials, 31(4), 483-499, 2018
Abstract(s)In this work, laccase was employed to improve the properties of lignocellulosic jute fabrics and then the modified jute was used as the fiber reinforcement of polypropylene (PP) matrix composites to improve its reinforcing effect on the polymer resins and obtain composite materials with better performance. The decrease in the COH component and the increase in the COC component on the surface of laccase-treated jute fabrics suggested that phenolic hydroxyl groups of lignins on the jute fiber surface were oxidized by laccase and the produced phenoxyl radicals were coupled to form ether structures. The laccase-treated jute fiber surface became smooth with lignins attached tightly. Moreover, the surface hydrophobicity and tensile properties of the jute fabrics were increased via the laccase-mediated reactions of lignins. PP composites reinforced by the laccase-treated jute fabrics showed higher breaking strength, storage modulus, and melting temperature than the control. The fracture surface of the laccase-treated jute fabric/PP composites was neat and jute fibers on the section surface were surrounded by PP resins closely, which indicated better interfacial adhesion between the modified jute reinforcement and PP matrix.
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Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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