Chemical modification of henequén fibers with an organosilane coupling agent

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• 作者：Valadez-Gonzalez ; A. ; Cervantes-Uc ; J.M. ; Olayo ; R. ; Herrera-Franco ; P.J.
• 关键词：A. Fibres ; Surface modification
• 刊名：Composites Part B: Engineering
• 出版年：1999
• 出版时间：April, 1999
• 年：1999
• 卷：30
• 期：3
• 页码：321-331
• 全文大小：635 K

文摘

Short henequén fibers were modified with a silane coupling agent in order to find out its deposition mechanism on the fiber surface and the influence of this chemical treatment on the mechanical properties of the composite. It was shown that the partial removal of lignin and other alkali soluble compounds from the fiber surface increases the adsorption of the silane coupling agent whereas the formation of polysiloxanes inhibits this process. The existence of a chemical bond between the coupling agent and the henequén fiber was confirmed by XPS and FTIR spectroscopy. It was further verified that the interaction between the fiber and the matrix is much stronger when the fiber surface topography is combined with the chemical modification of the fiber surface with a silane coupling agent.