Characterization data of cellulose modified by gamma irradiation to be used as template in the synthesis of a photoactive composite for environmental applications

Rodríguez-Quesada, Laria; Ledezma-Espinoza, Aura; Avendaño-Soto, Esteban; Starbird, Ricardo

doi:10.1016/j.dib.2022.108277

Cited by 3 publications

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…10,27,28 The formation of carbonyl groups, possibly aldehydic or carboxylic form, was a consequence of the glycosidic bond cleavage and cellulose depolymerization. [28][29][30][31] To determine whether this change was statistically significant, the FT-IR spectra were further evaluated through a chemometric method called Principal Component Analysis (PCA). This technique aims to find a small set of principal components (PC) that can describe the most variability in the spectra.…”

Section: Discussionmentioning

confidence: 99%

Radiation processing of bacterial cellulose-monolaurin wound dressing: Physicochemical effects, functional analysis, and sterilization

Tranquilan-Aranilla,

Flores,

Gallardo

et al. 2023

J Biomater Appl

View full text Add to dashboard Cite

A commercial bacterial cellulose-monolaurin wound dressing was investigated for changes in the chemical structure, mechanical strength, thermal degradation, morphology, and functional swelling properties after exposure to gamma and electron beam radiations at doses 15-50 kGy. Radiation-induced oxidation occurred as seen in the FT-IR peaks at 1720-1750 cm−1. Degradation of the cellulosic network was observed in tensile strength reduction and shift in degradation temperature to lower values. The SEM cross-section images of the irradiated dressings revealed a less dense nanostructure network compared to the non-irradiated samples while the XRD diffractograms indicated a change in lattice direction/plane. Despite these changes, irradiation caused no significant effect on the functional properties especially at 15-25 kGy doses where most biomedical devices are sterilized. All irradiated wound dressings exhibited physical integrity, increased exudate absorption, and water vapor transmission rate - properties beneficial to wound-healing functionality. The pre-selected sterilization dose of 15 kGy for each ionizing radiation was successfully verified and substantiated following ISO 11137-2:2016, hence ionizing radiation is a suitable sterilization modality for the product.

show abstract

Section: Discussionmentioning

confidence: 99%

Radiation processing of bacterial cellulose-monolaurin wound dressing: Physicochemical effects, functional analysis, and sterilization

Tranquilan-Aranilla,

Flores,

Gallardo

et al. 2023

J Biomater Appl

View full text Add to dashboard Cite

show abstract

Green synthesis of sulfonated cellulose/polyether block amide/polyethylene glycol diacrylate (SC/PEBAX/PEGDA) composite membrane by gamma radiation and sulfonation techniques for battery application

Kanbua

Rattanawongwiboon²,

Khamlue³

et al. 2023

International Journal of Biological Macromolecules

View full text Add to dashboard Cite

Comparative Analysis of Morphological and Structural Changes in Gamma and Electron Beam Irradiated Sugarcane Bagasse

Kapoor¹,

Tyagi²,

Das³

et al. 2023

Cellulose Chem. Technol.

View full text Add to dashboard Cite

"Sugarcane bagasse is an abundant source of cellulose and hemicelluloses that could be hydrolyzed to yield fermentable sugars, which can be utilized for the production of biofuel and other high-value bio-chemicals. To do so, it has to be made accessible for hydrolyzing chemicals and enzymes, and radiation exposure is one of the most effective and green techniques, among other physico-chemical processes. The present study investigated the effects of gamma and electron beam (e-beam) irradiation on sugarcane bagasse, with respect to changes in its physical, chemical, thermal and morphological characteristics. Sugarcane bagasse was irradiated with gamma radiation, using Co60 at a dose rate of 2.5 kGy/h, and electron beam at a dose rate of 2.5 kGy/pass. The maximum dose was varied up to 1000 kGy and changes in the physico-chemical characteristics of bagasse were observed at 500 kGy dose exposure. The physical appearance of bagasse (after gamma and e-beam treatments) changed from off-white to yellow in colour, while beyond 500 kGy, the samples became fluffy. With an increase in the radiation dose, the cellulose content reduced from 48% to 36%, following Co60 gamma exposure, and to 16% after e-beam exposure at 1000 kGy. The hemicellulose content was found to reduce from 31% to 16% after 1000 kGy of Co60 gamma exposure, but after e-beam radiation, it increased to 39%. The lignin fraction did not change much after any of the treatments, and was found to be in the range of 19-20% and 17-23%, after gamma and e-beam radiation exposure, respectively. In most of the irradiated samples, X-ray diffraction (XRD) confirmed a significant increase in crystallinity index with the increase in the radiation dose up to 1000 kGy. However, a decrease in the crystallinity index of bagasse was observed after e-beam irradiation. Scanning electron microscopy (SEM) analysis showed remarkable disruption of the structure, caused by high energy irradiations (gamma and e-beam). The particle size analysis indicated fragmented particles on increasing irradiation doses, but the distribution is more prominent in the case of the e-beam treatment. A lowering of the derivative thermogravimetric (DTG) peak from 339 °C in raw bagasse to 295 °C and 303 °C, for the samples subjected to gamma and e-beam radiation, respectively, was observed, in the thermal study of the biomass. The physico-chemical changes observed during the study clearly indicated that ionizing radiation exposure of lignocellulosic biomass led to the disintegration of its matrix, which may give easy access to hydrolytic chemicals or enzymes. Thus, it can be concluded that, although both ionizing radiations investigated here can fulfill the objective of disintegrating the biomass structure, gamma is more effective than e-beam radiation."

show abstract

Characterization data of cellulose modified by gamma irradiation to be used as template in the synthesis of a photoactive composite for environmental applications

Cited by 3 publications

References 16 publications

Radiation processing of bacterial cellulose-monolaurin wound dressing: Physicochemical effects, functional analysis, and sterilization

Radiation processing of bacterial cellulose-monolaurin wound dressing: Physicochemical effects, functional analysis, and sterilization

Green synthesis of sulfonated cellulose/polyether block amide/polyethylene glycol diacrylate (SC/PEBAX/PEGDA) composite membrane by gamma radiation and sulfonation techniques for battery application

Comparative Analysis of Morphological and Structural Changes in Gamma and Electron Beam Irradiated Sugarcane Bagasse

Contact Info

Product

Resources

About