Topic
SISAL
About: SISAL is a research topic. Over the lifetime, 1878 publications have been published within this topic receiving 55528 citations.
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TL;DR: In this paper, the influence of reinforcement on physical-chemical properties of the composites obtained by melt processing has been analyzed and the results showed that the incorporation of sisal or hemp strands caused an increase in the glass transition temperature (Tg) of the TPS as determined by DMTA.
170 citations
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TL;DR: In this article, the susceptibility of polycaprolactone/starch (PCL/S) and sisal fiber-reinforced PCL/S blends to different degrading environments was evaluated and the composites and the unfilled matrix showed hydrolytic stability at pH 7.2 at two different temperatures.
166 citations
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TL;DR: In this paper, a rubber seed oil-based polyurethane composite reinforced with unidirectional sisal fibers was prepared and characterized, and the properties of the composite gave good thermal and mechanical properties.
166 citations
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TL;DR: In this paper, the degradation process of sisal fiber composites was investigated and two matrices were used: one with 50% partial cement replacement by metakaolin (PC-MK) and a reference matrix having as binder only Portland cement (PC).
Abstract: The kinetics of vegetable (sisal) fiber degradation and the mechanisms responsible for deterioration of continuous sisal fiber cement composites are presented in this paper. Two matrices were used: one with 50% partial cement replacement by metakaolin (PC–MK) and a reference matrix having as binder only Portland cement (PC). The durability performance of the composite systems is examined and the mechanisms for the significant delay in the fiber degradation when the total amount of calcium hydroxide is reduced from the matrix discussed. The composites were subjected to 5, 10, 15, 20 and 25 cycles of wetting and drying and then tested under a four point bending load configuration in order to determine the flexural behavior and cracking mechanisms with progressive aging. Furthermore, composites stored under controlled lab conditions were tested under bending load at ages ranging from 28 days to 5 years. Fibers extracted from the aged composites were subjected to thermal analysis, Fourier transform infrared spectroscopy and microscopical observations in order to evaluate the changes in chemical composition and microstructure. Two fiber degradation mechanisms were observed in the PC composites: fiber mineralization due to the precipitation of calcium hydroxide in the fiber cell and surface and degradation of cellulose, hemicellulose and lignin due to the adsorption of calcium and hydroxyl ions. The degradation process occurs rapidly and after 10 cycles of wetting/drying a quite expressive modification in the flexural behavior is observed. The residual mechanical parameters after 25 cycles were the same as those observed in the unreinforced matrix. For the PC–MK composite fiber mineralization was not observed due to the low content of CH in the matrix.
165 citations
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TL;DR: In this article, the authors reported the first time manufacturing of hybrid fiber reinforced biodegradable composites using sisal and hemp fiber with polylactic acid employing melt processing and injection molding techniques.
163 citations