Comparative study of Fourier transform infrared spectroscopy (FTIR) analysis of natural fibres treated with chemical, physical and biological methods

Jayamani, Elammaran; Loong, Ting Goa; Bakri, Muhammad Khusairy Bin

doi:10.1007/s00289-019-02824-w

Cited by 42 publications

(26 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Generally, for all tested treatments, the extractive compounds’ removal and dissolution of hemicellulose are reflected by changes in the second 2928 cm −1 and third 2358 cm −1 absorption bands. Mercerization treatments in Figure 3 b show no absorbance for values converging to 2358 cm −1 , thereby proving the effectiveness of the method for removing hemicelluloses, as noticed in Table 1 [ 23 , 27 , 35 , 37 , 38 ].…”

Section: Resultsmentioning

confidence: 72%

Surface Treatments of Coffee Husk Fiber Waste for Effective Incorporation into Polymer Biocomposites

et al. 2021

View full text Add to dashboard Cite

Natural lignocellulose fibers have been extensively investigated and applied as a reinforcement of polymer composites in industrial applications from food packing to automotive parts. Among the advantages of natural fibers stands their relatively low cost and sustainable characteristics. These are accentuated in the case of residual fibers such as those obtained from coffee husks, an agribusiness waste, usually burnt or disposed into the environment. As composite reinforcement, hydrophilic natural fibers display adhesion problems to the most hydrophobic polymer matrices. This adhesion might be improved with distinct types of fibers surface treatments. In the present work, the effectiveness of three surface treatments applied to coffee husk fiber wastes (CHFW) were investigated, aiming to improve the tensile performance of castor oil-based polyurethane (COPU) biocomposites. The effects of treatments associated with (i) chemical with sodium hydroxide, (ii) physical by temperature and pressure and hydrothermic treatment, and (iii) biological by fermentation with Phanerochaete Chrysosporium fungus were evaluated by means of Fourier transformed infrared spectroscopy, X-ray diffraction, thermal analyses and morphology by scanning electron microscopy for different concentration of NaOH, different hydrothermic times at 121 °C/98 kPa and exposition to P. chrysosporium. The most effective treatment was the hydrothermal one at 121 °C and 98.06 kPa for 30 min. Preliminary tensile tests were performed in COPU biocomposites reinforced with 20% CHFWs subjected to the optimized conditions for each distinct type of treatment. The results indicated that the hydrothermal treatment promoted significant enhancement in the fiber/matrix interfacial bond, increasing the tensile strength up to 60% compared to COPU reinforced with in natura CHFWs fibers. It is important to mention that these composites can be applied as plastic wood for household items’ internal parts and in the automobile industry.

show abstract

Section: Resultsmentioning

confidence: 72%

Surface Treatments of Coffee Husk Fiber Waste for Effective Incorporation into Polymer Biocomposites

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Additionally, biological treatments aim at providing a clean surface and reducing the hydrophilic properties inherent in plant fibers to improve the compatibility between lignocellulosic fibers and hydrophobic composite matrixes. In this aspect, a comparative study on plant fiber treated with chemical, physical and biological methods was performed by Jayamani et al [ 152 ], wherein the fungal treatment was the most effective method to improve the fibers’ characteristics in comparison to heat treatment. Another comparative study on the influence of thermal and chemical pre-treatments on plant fibers was performed by Ferreira et al [ 97 ].…”

Section: Pre-treatments Of Natural Fibers Used As Reinforcement Inmentioning

confidence: 99%

A Review on Natural Fiber-Reinforced Geopolymer and Cement-Based Composites

et al. 2020

View full text Add to dashboard Cite

The use of ecological materials for building and industrial applications contributes to minimizing the environmental impact of new technologies. In this context, the cement and geopolymer sectors are considering natural fibers as sustainable reinforcement for developing composites. Natural fibers are renewable, biodegradable, and non-toxic, and they exhibit attractive mechanical properties in comparison with their synthetic fiber counterparts. However, their hydrophilic character makes them vulnerable to high volumes of moisture absorption, thus conferring poor wetting with the matrix and weakening the fiber–matrix interface. Therefore, modification and functionalization strategies for natural fibers to tailor interface properties and to improve the durability and mechanical behavior of cement and geopolymer-based composites become highly important. This paper presents a review of the physical, chemical and biological pre-treatments that have been performed on natural fibers, their results and effects on the fiber–matrix interface of cement and geopolymer composites. In addition, the degradation mechanisms of natural fibers used in such composites are discussed. This review finalizes with concluding remarks and recommendations to be addressed through further in-depth studies in the field.

show abstract

“…Por ejemplo, en la banda entre 3000 y 3500 cm-1 (OH) y entre 900 y 1100 cm-1 (C-O-C) se puede ver una disminución de la intensidad de las bandas a medida que aumentó la temperatura. Resultados similares han sido reportados por otros investigadores (Jayamani, Loong, & Bakri, 2020). espumado obtenido a partir de almidón de yuca En la Figura 7-4 se muestra el análisis IR del BST y BH, tratamiento 70°C, 7h, 10% (menor tamaño de partícula), en la que se identificaron bandas características atribuidas a los componentes principales de la celulosa, hemicelulosa y lignina, macromoléculas presentes en el bagazo de fique.…”

Section: Espectroscopia Ftirunclassified

Influence of contents of chemical compositions on the mechanical property of sisal fibers and sisal fibers reinforced PLA composites

Zhu

Hao

Zhang

2018

Journal of Natural Fibers

View full text Add to dashboard Cite

The indiscriminate accumulation of waste materials of petrochemical origin has prompted research that leads to obtaining environmentally friendly materials using renewable raw materials. The objective of this thesis was to establish the process conditions for the extraction of microparticles of fique bagasse and the evaluation of the effect of their incorporation in a foamed material obtained from cassava starch.The extraction of the microparticles was carried out by means of a hydrolysis process with sulfuric acid using previously conditioned fique bagasse. To determine the process conditions, a 33 factorial design was run in which the acid concentration (5, 10 and 15%), temperature (70, 80 and 90 ° C) and time (3, 5 and 7h) of hydrolysis, obtaining a significant effect on the morphological, chemical and thermal properties, highlighting functional groups, morphology, color and degradation and melting temperatures characteristic of cellulose, with 10%, 70 ° C and 7h being the conditions that allowed obtaining the smallest size of particle.To determine the effect of the incorporation of the microparticles on the properties of the foams, a unifactorial design was evaluated with five levels of concentration of microparticles (0.0, 0.5, 0.75, 1.0 and 1.25%) in the mixture for obtaining foam, finding a significant effect on the properties of expansion index, density, compressibility and water absorption, being the 0.75% treatment the one that presented outstanding properties with respect to the other treatments. This indicates that fique bagasse in adequate concentrations has potential for use in the production and improvement of the properties of starch-based foams.

show abstract

Comparative study of Fourier transform infrared spectroscopy (FTIR) analysis of natural fibres treated with chemical, physical and biological methods

Cited by 42 publications

References 53 publications

Surface Treatments of Coffee Husk Fiber Waste for Effective Incorporation into Polymer Biocomposites

Surface Treatments of Coffee Husk Fiber Waste for Effective Incorporation into Polymer Biocomposites

A Review on Natural Fiber-Reinforced Geopolymer and Cement-Based Composites

Influence of contents of chemical compositions on the mechanical property of sisal fibers and sisal fibers reinforced PLA composites

Contact Info

Product

Resources

About