Lignocellulosic composite

El-Meligy, Magda G.; El‐Zawawy, Waleed K.; Ibrahim, Maha M.

doi:10.1002/pat.536

Cited by 23 publications

(22 citation statements)

References 31 publications

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“…The CO absorption band of the carbonyl group at 1733 per cm disappears El Meligy et al, 2004; on alkali treatment of natural fibers which is evidence that this band is due to hemicellulose component of natural fiber (El Meligy et al, 2004). A small sharp band at 903 per cm arises from α-glucosidic linkages between the sugar units in hemicelluloses and celluloses (El Meligy et al, 2004;Valadez-Gonzalez et al, 1999).…”

Section: Fig 1 Ftir Spectra Of B Vulgaris Internodesmentioning

confidence: 90%

“…The lignocellulosic fibers can experience significant weight loss due to partial dissolution of hemicelluloses, lignin and when treated with alkali pectin (Ganan et al, 2008;Mwaikambo and Ansell, 2002). The CO absorption band of the carbonyl group at 1733 per cm disappears El Meligy et al, 2004; on alkali treatment of natural fibers which is evidence that this band is due to hemicellulose component of natural fiber (El Meligy et al, 2004). A small sharp band at 903 per cm arises from α-glucosidic linkages between the sugar units in hemicelluloses and celluloses (El Meligy et al, 2004;Valadez-Gonzalez et al, 1999).…”

Section: Fig 1 Ftir Spectra Of B Vulgaris Internodesmentioning

confidence: 98%

“…The bands in the 1604 and 1640 per cm region may attribute to CO stretching vibration of the alpha keto carbonyl in the cellulose component of bamboo (Silverstein et al, 2005). The bands in the region between 1049 to 1248 per cm attributed to CO stretching vibrations of aliphatic primary and secondary alcohols in cellulose, hemicellulose, and lignin (Wang et al, 2009;El-Meligy et al, 2004;Sun et al, 2002). The second most prominent and strong band at 1046 per cm attributed to CO stretching in cellulose, hemicelluloses, and lignin or COC stretching in cellulose and hemicelluloses (Liu et al, 2008;Sun et al, 2002).…”

Section: Journal Of Agricultural Studiesmentioning

confidence: 99%

“…The second most prominent and strong band at 1046 per cm attributed to CO stretching in cellulose, hemicelluloses, and lignin or COC stretching in cellulose and hemicelluloses (Liu et al, 2008;Sun et al, 2002). The peak at 833 per cm was due to b-glucosidic linkage while the peaks at 664 and 607 per cm are due to out-of-plane bending vibration of inter-molecular H-bonded OH group and out-of-plane OH bending (Wahab et al, 2014;El-Meligy et al, 2004). 800°C.…”

Section: Journal Of Agricultural Studiesmentioning

confidence: 99%

“…ISSN 2166-0379 2017 The sharp band observed at 1733 per cm is due to the absorption of the carbonyl stretching of ester and carboxyl groups, which are the most abundant in bamboo hemicelluloses (Mui et al, 2008). The band in the region of 1059-1248 per cm involves the CO stretching vibrations of the aliphatic primary and secondary alcohols in the cellulose, hemicellulose, and lignin (El Meligy et al, 2004;Valadez Gonzalez et al, 1999). The lignocellulosic fibers can experience significant weight loss due to partial dissolution of hemicelluloses, lignin and when treated with alkali pectin (Ganan et al, 2008;Mwaikambo and Ansell, 2002).…”

Section: Fig 1 Ftir Spectra Of B Vulgaris Internodesmentioning

confidence: 99%

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Thermal Degradation Analysis on 4-year-old Culms of Cultivated Tropical Bamboo Bambusa Vulgaris

Wahab

Mustafa

Fauzi³

et al. 2017

JAS

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The thermal degradation of matured 4-year-old culms of cultivated tropical bamboo Bambusa vulgaris was studied and analyzed. The analysis using the Fourier Transform Infrared Spectroscopy and Thermal Gravimetric Analysis revealed the presence of basic functional groups in the bamboo which consists mainly of ester, carbonyl, and hydroxyl groups. The chemicals present in the bamboo vary depending on the location of the samples taken from the bamboo culms. The moisture content and extractive were omitted in the kinetic study since they constituted less than 10% of the overall chemicals in bamboo and observed below 100℃. Low reactivity of lignin components and hemicellulose in bamboo occurred due to the peculiarities of the chemical structure and composition. The mechanism of the decomposition ISSN 2166-0379 2017 http://jas.macrothink.org 51 reactions taken as a three-step reaction which involved the activation energies and dynamics related to volatile fractions of hemicellulose, cellulose, and lignin. Activation energies of 46, 100, 105, 127, and 236 kJ/mol applied for all of the bamboos. The activation energy carried could provide better insight into the thermal decomposition process. It provides more information on critical energy needed to start a reaction. The decomposition activation energy range obtained could assist in understanding the thermal decomposition stability of the bamboo fibers and application in natural fiber reinforced polymer composite industry. Journal of Agricultural Studies

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Section: Fig 1 Ftir Spectra Of B Vulgaris Internodesmentioning

confidence: 90%

Section: Fig 1 Ftir Spectra Of B Vulgaris Internodesmentioning

confidence: 98%

Section: Journal Of Agricultural Studiesmentioning

confidence: 99%

Section: Journal Of Agricultural Studiesmentioning

confidence: 99%

Section: Fig 1 Ftir Spectra Of B Vulgaris Internodesmentioning

confidence: 99%

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Thermal Degradation Analysis on 4-year-old Culms of Cultivated Tropical Bamboo Bambusa Vulgaris

Wahab

Mustafa

Fauzi³

et al. 2017

JAS

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Mechanical behavior of palm oil–based composite foam and its sandwich structure with a flax–epoxy composite

Teo

Lan

Teh

et al. 2016

J of Applied Polymer Sci

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Empty fruit bunch fiber (EFB), an abundant biomass waste from the palm oil industry, is used to reinforce palm oil–based polyurethane foam (POPU), and the mechanical properties of the composite foams are also assessed. The fiber–foam interfacial adhesion is also investigated by SEM images and Fourier transform infrared spectrometry. The results show that the composite foam reinforced by 15–30% EFB volume fractions could be enhanced by up to 10 times in flexural strength and twice in compressive strength compared to neat POPU. The composite foams with 20% and 30% volume fraction of EFB are exploited as a core in a sandwich construction with unidirectional flax fiber–reinforced epoxy composites (as face sheets). Sandwiches using EFB/POPU composite foam cores exhibited better toughness and achieved higher flexural energy at break compared to that using a commercial poly(ethylene terephthalate (PET) foam core. Furthermore, the failure mechanisms occurred under a combination of flexural and shear deformation. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43977.

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New PP/PLA/cellulose composites: effect of cellulose functionalization on accelerated weathering behavior (accelerated weathering behavior of new PP/PLA/cellulose composites)

Darie¹,

Vlad²,

Anghel³

et al. 2015

Polym. Adv. Technol.

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a Polylactic acid (PLA) was used as partial replacement for conventional thermoplastic matrix, new composites comprising cellulose, polypropylene (PP), and PLA being realized. In order to obtain a compatible interface between cellulosic pulp and polymeric matrix, two chemical modifications of cellulose with stearoyl chloride and toluene di-isocyanate (TDI) were performed, structural changes being evidenced by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The composite materials were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, dynamic scanning calorimetry, impact, tensile and melt rheological tests, surface tension, and dynamic vapor sorption. Because promising results for impact strength and Young modulus were recorded when replacing 15% of PP with PLA in blends of PP with the same cellulosic pulp load, the aim of our study was to assess the behavior to accelerate weathering of composites comprising PP, cellulosic pulp, and PLA. Although the slight decrease in the mechanical properties was recorded after accelerated weathering, the use of functionalized cellulose successfully prevented the deterioration of surface materials, especially for composite comprising stearoyl chloride treated cellulose pulp.

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Lignocellulosic composite

Cited by 23 publications

References 31 publications

Thermal Degradation Analysis on 4-year-old Culms of Cultivated Tropical Bamboo Bambusa Vulgaris

Thermal Degradation Analysis on 4-year-old Culms of Cultivated Tropical Bamboo Bambusa Vulgaris

Mechanical behavior of palm oil–based composite foam and its sandwich structure with a flax–epoxy composite

New PP/PLA/cellulose composites: effect of cellulose functionalization on accelerated weathering behavior (accelerated weathering behavior of new PP/PLA/cellulose composites)

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