Dataset on cellulose nanoparticles from blue agave bagasse and blue agave leaves

These data and analyses support the research article “Production of cellulose nanoparticles from blue agave waste treated with environmentally friendly processes” Robles et al. [1]. The data and analyses presented here include fitted curves for selected carbons of the 13C CP-MAS NMR analysis; SEM images of the raw and bleached fibers, graphics with chemical composition and visual images of the fibers throughout the process.


a b s t r a c t
These data and analyses support the research article "Production of cellulose nanoparticles from blue agave waste treated with environmentally friendly processes" Robles et al. [1]. The data and analyses presented here include fitted curves for selected carbons of the 13 C CP-MAS NMR analysis; SEM images of the raw and bleached fibers, graphics with chemical composition and visual images of the fibers throughout the process.
& Data is accessible in the present document.

Related research article
Production of cellulose nanoparticles from blue agave waste treated with environmentally friendly processes.

Value of the Data
These data provide the micrographics, chemical composition and crystallinity data of CNC and CNF from blue agave waste.
These data provide further information about NMR analyses of the different cellulose nanoentities. These data allow researchers to extend the comprehension of the related article.

Data
The data in this article contains information on the chemical composition (Fig. 2), visual aspect of the fibers through pulping and bleaching (Fig. 3), SEM ( Fig. 1 and Fig. 4) and AFM (Fig. 5) micrographics as well as NMR (Fig. 6) analysis of different cellulose nanoentities obtained from blue agave (Agave tequilana Weber var. azul) waste. For more information, please refer to Robles et al. [1].

Materials and methods
SEM images were obtained with a Scanning electron microscope Hitachi S-3400N with field emission cathode, with a lateral resolution of 10-11 Å at 20 kV.
Chemical characterization was done according to standard methods [2][3][4][5][6]. 13C NMR spectrometry was performed at a frequency of 250 MHz with an acquisition time of 0.011 s, at room temperature. The spectrum was recorded over 32 scans and water was used as solvent for all the nanocelluloses.
CrystallinityCrystallinity indexes were calculated as follows:   In which I 200 corresponds to the main crystalline domain at around 23°, and I AM is the scatter of the amorphous cellulose, which has its highest intensity around 2θ ¼ 18°.   Table 1 Solid-state properties of the different nanoparticles as obtained from XRD and NMR. Cr.I X corresponds to the crystallinity index calculated with: SI-Segal Index, PF-Peak fitting, C 4 -NMR C 6 NMR region; δ hkl is the crystallite size approximated with the Scherrer equation.
In which the sum of the areas correspondent to the diffraction of crystalline planes is assumed to be the area of the crystalline region, being 2θ 1 and 2θ 2 the limits of the fitted signal for the corresponding crystalline domains (S 1-10, S 110, S 200, S 004 ); while S tot corresponds to the total area [8][9][10]. Least square iterations were done until coefficient of determination R 2 Z 0.997 was achieved, which corresponds to a 99.7% accurate fitting. C4-NMR: In which Scrys corresponds to the crystalline region of the C4 spectra (from 87 to 93 ppm) while Stot corresponds to the total area of the C4 region which includes crystalline and amorphous contribution.
Crystallite domain sizes (δ hkl ) were estimated with the Scherrer equation [11,12]. using the peaks corresponding to the crystalline regions: The different crystallinities, as well as the contributions of each crystallite domain size, is present in Table 1