Effect of grafting generations of poly(amidoamine) dendrimer from the sisal fiber surface on the mechanical properties of composites |
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| Authors: | Zhanying Sun Fengqiang Yi Xiongyan Zhao |
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| Affiliation: | 1. College of Material Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, China;2. Hebei Key Laboratory of Material Near-Net Forming Technology, Hebei University of Science and Technology, Shijiazhuang, China |
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| Abstract: | In order to improve the mechanical properties of sisal fiber-reinforced polypropylene composites, the sisal fibers were grafted with poly(amidoamine) dendrimer and the effects of grafting generations on the mechanical properties of composites were studied. The results reveal that the tensile, flexural, and impact strength of the composites are improved considerably with the poly(amidoamine) dendrimer grafting treatment. For the 2.0 generation treatment with the poly(amidoamine) dendrimer, the tensile, flexural, and impact strength of the composites at 30 wt% fiber loading increase by 29%, 13%, and 54%, respectively. However, the thermal and mechanical properties of the sisal fibers decrease after prolonged grafting treatment. |
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| Keywords: | Natural fiber composites poly(amidoamine) dendrimer sisal fiber mechanical properties polypropylene grafting |
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