scispace - formally typeset
Search or ask a question
Topic

SISAL

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


Papers
More filters
Journal ArticleDOI
TL;DR: Inverse gas chromatography results showed that the sisal fibers and the tannin-phenolic thermoset have close values of the dispersive component and also have predominance of acid sites (acid character) at the surface as mentioned in this paper.
Abstract: A tannin–phenolic resin (40 wt% of tannin, characterized by 1 H nuclear magnetic resonance (NMR) and 13 C NMR, Fourier transform infrared, thermogravimetry, differential scanning calorimetry) was used to prepare composites reinforced with sisal fibers (30–70 wt%). Inverse gas chromatography results showed that the sisal fibers and the tannin–phenolic thermoset have close values of the dispersive component and also have predominance of acid sites (acid character) at the surface, confirming the favoring of interaction between the sisal fibers and the tannin–phenolic matrix at the interface. The Izod impact strength increased up to 50 wt% of sisal fibers. This composite also showed high storage modulus, and the lower loss modulus, confirming its good fiber/matrix interface, also observed by SEM images. A composite with good properties was prepared from high content of raw material obtained from renewable sources (40 wt% of tannin substituted the phenol in the preparation of the matrix and 50 wt% of matrix was replaced by sisal fibers).

67 citations

Journal ArticleDOI
TL;DR: In this article, the diameter-dependent tensile strength and Young's modulus in 40 sisal fibres samples were described from a statistical perspective, showing the significant sensitivity of the Weibull predictions versus the number of fibres used in the distributions.
Abstract: The paper describes from a statistical perspective the diameter-dependence tensile strength and Young’s modulus in 40 sisal fibres samples. The fibres tensile properties depend significantly upon their diameter, which has been determined using optical and SEM microscope techniques. Further characterisation of the sisal fibres has been carried out using FT-IR and DSC techniques. The fibres’ ultimate tensile strength and Young’s modulus have been evaluated using four different estimation methods from two and three-parameter Weibull distribution statistics. We show the significant sensitivity of the Weibull predictions versus the number of fibres samples used in the distributions, with the Weibull modulus m σ obtained from our results being 10% smaller compared to what is reported in open literature. The scatter of the mechanical properties of the sisal fibres shown in this work is also compared to analogous distributions present in other works.

66 citations

Journal ArticleDOI
25 Mar 2012-Silicon
TL;DR: In this paper, the authors compared the mechanical properties of raw jute and sisal fiber reinforced epoxy composites with sodium hydroxide treated JE and SF this paper.
Abstract: The aim of the present study is to investigate and compare the mechanical properties of raw jute and sisal fiber reinforced epoxy composites with sodium hydroxide treated jute and sisal fiber reinforced epoxy composites. This is followed by comparisons of the sodium hydroxide treated jute and sisal fiber reinforced composites. The jute and sisal fibers were treated with 20% sodium hydroxide for 2 h and then incorporated into the epoxy matrix by a molding technique to form the composites. Similar techniques have been adopted for the fabrication of raw jute and sisal fiber reinforced epoxy composites. The raw jute and sisal fiber reinforced epoxy composites and the sodium hydroxide treated jute and sisal fiber reinforced epoxy composites were characterized by FTIR. The mechanical properties (tensile and flexural strength), water absorption and morphological changes were investigated for the composite samples. It was found that the sodium hydroxide treated jute and sisal fiber reinforced epoxy composites exhibited better mechanical properties than the raw jute and raw sisal fiber reinforced composites. When comparing the sodium hydroxide treated jute and sisal fiber reinforced epoxy composites, the sodium hydroxide treated jute fiber reinforced composites exhibited better mechanical properties than the latter.

66 citations

Journal ArticleDOI
TL;DR: In this article, the effect of chemical treatment on the constituents and tensile properties of sisal fiber (Agave Sisalana) was investigated and the results showed that the chemical treatments enhance the removal of lignin and hemicelluloses which are detrimental to the bonding strength of composite produced from natural fibres except that of sample treated with alkaline peroxide.
Abstract: This work was carried out to investigate the effect of chemical treatment on the constituents and tensile properties of sisal fibre (Agave Sisalana). Sisal leaves were cut and buried underground close to the stream and were wetted with water regularly in order to ensure proper fermentation for about 15 days. The fermented leaves were washed and sun dried. The dried sisal fibre obtained was treated mechanically with chemicals after which the percentages of their constituents were characterized and, their tensile properties determined with Instron universal tensile testing machine. The results show that the chemical treatments enhance the removal of lignin and hemicelluloses which are detrimental to the bonding strength of composite produced from natural fibres except that of sample treated with alkaline peroxide. The results of the tensile test revealed that sample treated sequentially with KOH, acetic acid, NaCl and HCl has the best tensile properties followed by the sample treated with alkaline peroxide.

66 citations

Journal ArticleDOI
TL;DR: In this article, the effect of surface treatment on tensile, flexural and chemical resistance properties of sisal fiber reinforced composites was studied for natural ligno cellulosic sisal fibre reinforced composite.
Abstract: In this study, effect of fibre surface treatment on tensile, flexural and chemical resistance properties were studied for sisal fibre reinforced composites Natural ligno cellulosic sisal fibre reinforced composites were prepared by different surface treatments by hand lay-up method Fibre surface treatments were carried out to produce good interface between the fibre and the matrix to improve the mechanical properties Fibre surface treatments were done by boiled the sisal fibres in different % of NaOH and treated the fibres in different % of NaOH, treated in acetic acid and methanol Unsaturated polyester resin was used as the matrix for preparing the composites For comparison, these properties for untreated sisal fibre reinforced composites were also studied From the results it was observed that 18% aqueous NaOH boiled sisal fibre reinforced composites have higher tensile, flexural properties than other composites Untreated sisal fibre composites show lower properties than treated composites Chemical resistance properties indicate that all sisal fibre reinforced composites are resistance to all chemicals except carbon tetra chloride The tests are carried out as per the ASTM standards

66 citations


Network Information
Related Topics (5)
Nanocomposite
71.3K papers, 1.9M citations
76% related
Cellulose
59K papers, 1.4M citations
75% related
Ultimate tensile strength
129.2K papers, 2.1M citations
74% related
Polymer
131.4K papers, 2.6M citations
71% related
Scanning electron microscope
74.7K papers, 1.3M citations
71% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023130
2022268
2021157
2020127
2019145
2018141