“…Meanwhile, this peak absorbance was zero in AT fiber because of the elimination of hemicellulose and some amount of lignin (Ding et al, 2022;Liu et al, 2019;Shaker et al, 2020;Vijay et al, 2020). The peak absorbance noticed at 1653cm -1 and 1656.85cm -1 in the UT fiber and AT fiber respectively signifies the vibration of carbonyl and acetyl functional groups (C=O), from this presence of some percentage of hemicellulose and lignin, can be confirmed (Babu et al, 2022;Moshi et al, 2020;Ravindran et al, 2020;). Stretching of alkene functional group (C=C) occurs at the wavelength of 1529.55cm -1 and 1517.97cm -1 in the AT and UT fiber respectively, which indicates the presence of aromatic lignin (Ding et al, 2022;Vijay et al, 2020).…”
“…FTIR was analyzed for both UT and AT fiber which was given in Figure 6 and various absorbance peaks with respective functional groups was tabulated in Table 6. The wave absorbance between 3800cm -1 and 3000cm -1 shows the existence of (-OH) hydroxyl functional group, which indicates that moisture content was available in both AT and UT fiber (Madhu et al, 2019;Madhu et al, 2020;Manimaran et al, 2018;Narayanasamy et al, 2020;Ravindran et al, 2020). Two peak absorbances say 2924.08cm -1 and 2860.43cm -1 were noticed between the wave band 3000cm -1 and 2500cm -1 .…”
<p>The article involves in the process of study on novel plant fiber from agave plant species known as agave decipiens. The fiber was mechanically extracted from their leaves and fiber was chemically treated using sodium hydroxide by 5% (w/v). Using various analyses, the fiber was characterized and its properties were obtained. From chemical constituent analysis it was confirmed that hemicellulose, amorphous lignin, and other impurities were removed to some extent, and using x-ray diffraction (XRD), an improvement in crystallinity index was observed (i.e. from 47.99% to 52.29%). Increased crystallinity provides better tensile stress from 479.302 MPa to 494.172 MPa, which was confirmed by single fiber tensile test. A change in physical diameter was observed using a digital microscope, the outer diameter was reduced to 117.66µm from 121.84µm. Change in chemical components was identified by Fourier Transform Infrared Spectroscopy (FTIR). Alkaline-treated (AT) fiber sustains a temperature of about 240oC during thermogravimetric analysis (TGA). Study on surface morphology was conducted with help of scanning electron microscope (SEM). Concluding that alkaline treatment made some impact on fiber characteristics and made it suitable for reinforcement.</p>
“…Meanwhile, this peak absorbance was zero in AT fiber because of the elimination of hemicellulose and some amount of lignin (Ding et al, 2022;Liu et al, 2019;Shaker et al, 2020;Vijay et al, 2020). The peak absorbance noticed at 1653cm -1 and 1656.85cm -1 in the UT fiber and AT fiber respectively signifies the vibration of carbonyl and acetyl functional groups (C=O), from this presence of some percentage of hemicellulose and lignin, can be confirmed (Babu et al, 2022;Moshi et al, 2020;Ravindran et al, 2020;). Stretching of alkene functional group (C=C) occurs at the wavelength of 1529.55cm -1 and 1517.97cm -1 in the AT and UT fiber respectively, which indicates the presence of aromatic lignin (Ding et al, 2022;Vijay et al, 2020).…”
“…FTIR was analyzed for both UT and AT fiber which was given in Figure 6 and various absorbance peaks with respective functional groups was tabulated in Table 6. The wave absorbance between 3800cm -1 and 3000cm -1 shows the existence of (-OH) hydroxyl functional group, which indicates that moisture content was available in both AT and UT fiber (Madhu et al, 2019;Madhu et al, 2020;Manimaran et al, 2018;Narayanasamy et al, 2020;Ravindran et al, 2020). Two peak absorbances say 2924.08cm -1 and 2860.43cm -1 were noticed between the wave band 3000cm -1 and 2500cm -1 .…”
<p>The article involves in the process of study on novel plant fiber from agave plant species known as agave decipiens. The fiber was mechanically extracted from their leaves and fiber was chemically treated using sodium hydroxide by 5% (w/v). Using various analyses, the fiber was characterized and its properties were obtained. From chemical constituent analysis it was confirmed that hemicellulose, amorphous lignin, and other impurities were removed to some extent, and using x-ray diffraction (XRD), an improvement in crystallinity index was observed (i.e. from 47.99% to 52.29%). Increased crystallinity provides better tensile stress from 479.302 MPa to 494.172 MPa, which was confirmed by single fiber tensile test. A change in physical diameter was observed using a digital microscope, the outer diameter was reduced to 117.66µm from 121.84µm. Change in chemical components was identified by Fourier Transform Infrared Spectroscopy (FTIR). Alkaline-treated (AT) fiber sustains a temperature of about 240oC during thermogravimetric analysis (TGA). Study on surface morphology was conducted with help of scanning electron microscope (SEM). Concluding that alkaline treatment made some impact on fiber characteristics and made it suitable for reinforcement.</p>
“…can cause deterioration of their physical or mechanical properties (Sethi et al, 2015;Liu et al, 2020;Dayo et al, 2020;Kepir et al, 2021;Sari et al, 2021;Dutt et al, 2020;Ye et al, 2020;Huang et al, 2020;Perović et al, 2020). Natural cellulosic fibers (Geremew et al, 2021;Ravindran et al, 2020) have increasingly been applied in the development of composites for engineering applications. The ability to tailor and enhance the properties of composite materials to meet expected performances have increasingly made them find applications in manufacturing and engineering (Karthi et al, 2020;Nagaraj et al, 2020;Saroia et al, 2020;Feng et al, 2020;Eslahi et al, 2020;Zheng et al, 2020;Saman et al, 2021).…”
The manufacturing process of a material is a strong determinant of its performance in service. Different applications like ships, wind turbine blades, oil rigs, etc demand materials with low water absorption due to their operational environment. Previous studies have reported the water absorption behavior of cellulosic fiber-reinforced composites but the optimization of the water absorption properties of pineapple leaf/glass fiber hybrid reinforced epoxy composites by optimizing its manufacturing parameters have not been studied even with its possible wide range of application. This paper presents the optimization of the water absorption properties of a material PxGyEz (with x, y, and z representing the volume fraction of pineapple leaf fiber (PALF) (P), the volume fraction of glass fiber (G), and fiber length respectively in an epoxy matrix) using the Taguchi robust optimization technique and statistical analysis. The material at x=15%, y=15%, and z=20mm which is, P15G15E20 was the optimum having the lowest water absorption of 0.2667%. A notable observation was that fiber length had a significant contribution to the water absorption properties of the material. The interaction effect of fiber length with the cellulosic fiber and the glass fiber at mean values was found to be 49.37% and 14.24% respectively. SEM and FTIR analysis showed microstructural and chemical formations that explained the water absorption behavior of the optimized hybrid composite. The water absorption property of the material was modeled and the equations proved to be 95.6% accurate in predicting the water absorption of the material at different combinations.
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