SISAL

About: SISAL is a research topic. Over the lifetime, 1878 publications have been published within this topic receiving 55528 citations.

Production of Energy—The Second Generation Ethanol and Prospects

Abstract: Bioethanol is mainly produced from food sources, leading to criticisms regarding competition between food and fuels. The study of alternatives raw materials is very important. The reactions of hydrolysis of sisal bagasse were carried out in stainless steel reactor of high pressure. Sugar contents were determined by HPLC. The pretreatment was realized in the highest temperature and lowest acid concentration to obtain the maximum xylose concentration of 24,000 mg/L and maximum glucose concentration of 6700 mg/L. After the prehydrolysis the percentage of cellulose in the sisal bagasse concentrated in 107 % in function of hemicellulose reduction (30 %) and leaching of ashes (40 %). In the hydrolysis, the higher formation of glucose occurred in the highest temperature and highest acid concentration to obtain values of 4000 mg/L. The sisal bagasse has a high quantity of pentose from the hemicellulose. The hydrolyzate liquor can be used for the production of ethanol.

A production method for a blended fabric made of cotton fibers and sisal fibers

Abstract: The invention provides a production method for a blended fabric made of cotton fibers and sisal fibers. The production method comprises the step of sisal fiber preparation, cotton sliver preparation, sisal fiber sliver preparation, and drawing, roving and spinning of the blended fabric. The fabric is made of composite fibers of sisal fibers and cotton fibers; compact spinning is used in spinning, so that the composite fibers are closely arranged, and the breaking strength and the tear resistance of blending are improved; the fabric is flat and smooth and good in hand feeling.

Sisal fiber reinforced polyethylene terephthalate composites; Fabrication, characterization and possible application

Abstract: The use of thermoplastics (TPs) for natural fiber composites is restricted to commodity ones like polypropylene and polyethylene However, using engineered TPs such as polyethylene terephthalate (PET) will benefit from its technical and economic advantages. The research aims to characterize injection molded PET composites reinforced with sisal fibers treated differently. Polyethylene terephthalate composites containing 40 wt.% of untreated, alkaline-treated, and alkali/acetylation treated sisal fibers were prepared using compounding and injection molding processes and then characterized. It has been found that production of sisal-PET composites by compounding and injection molding has been shown to be possible. Thermal damage to sisal fiber was noticed during composite production. Based on the thermogravimetric analysis analysis, a net weight loss (excluding water loss) of 11.1%–14.0% was observed at the operating temperatures of the two processes. The addition of 40 wt.% of sisal to the PET matrix improved the tensile modulus by 137%. Further improvement by 179% was observed when alkali-treated sisal fiber was used. The combined alkali/acetylation treatment of sisal yields more enhancement by 233%. This is a significant advancement because modulus is the most influential parameter during the design and service of an engineering product. Generally, compared to the raw sisal composite (RSC) the interfacial, mechanical, thermal, and water absorption properties of the alkali treated sisal composite (Al-SC) and alkali/acetylated sisal composite (Al-ASC) specimens recorded an improvement. Relative to the natural fiber reinforced thermoplastic composites that were commercialized in the automotive industry, the produced sisal–PET composites resulted in a considerable improvement of 66.6%–190% in flexural strength and by 110.5%–410.0% in flexural modulus, depending on sisal fiber treatment and the composite to be compared. Thus, the studied composites can be recommended for various parts of automobiles.