Preparation and Characterization of Aldehyde-Functionalized Cellulosic Fibers through Periodate Oxidization of Bamboo Pulp

Abstract

a Cellulosic fibers were efficiently disintegrated from bamboo pulp as raw material and then oxidized using sodium periodate to introduce dialdehyde groups on their surfaces. The resultant fibers were characterized using Fourier transform infrared spectroscopy (FT-IR), Xray diffraction (XRD), and thermogravimetric analysis (TGA). FT-IR spectra demonstrated that the characteristic absorption band of aldehyde groups was present at 1735 cm -1 , confirming that aldehyde groups were successfully introduced. XRD showed that the nature of bamboo pulp fibers changed slightly after oxidation, except in the reduction of crystallinity. The aldehyde content increased with the sodium periodate content and reached a maximum of 1.41 mmol/g. The yield loss maximum was 32.4 wt%. TGA results showed that the temperature at the initial and final decomposition of the oxidized fibers was subject to the periodate dosage and that the thermal stability decreased to some extent.

Cellulosic/Polyvinyl Alcohol Composite Hydrogel: Synthesis, Characterization and Applications in Tissue Engineering

“…In Figure 4 , the XRD profiles of the cellulosic materials demonstrated a diffuse peak from 15° to 16° and 3 additional peaks at 20 °C, 22.5° and 40° respectively attributed to the , , , and crystallographic planes. This type of profile was identical to what is commonly observed for type I microcrystalline cellulose [ 39 , 40 , 41 ]. Moreover, these profiles differed greatly from the PVA pattern.…”

Simultaneous laser-based graphitization and microstructuring of bamboo for supercapacitors derived from renewable resources

“…S3 † ), since the diffraction peak observed around 25° can originate from both graphitic carbon as well as cellulose of native bamboo. 12 On the other hand, the spectrum obtained from the Raman analysis performed at the center of the patterned structure shows three prominent peaks at 1350, 1600, and 2700 cm −1 ( Fig. 1c ).…”

Efficient separation of cellulose from bamboo by organic alkali

“…The peak at 1370 cm − 1 represents the phenolic hydroxyl groups. After organic alkali treatment, it was obviously seen that the characteristic peaks of hemicellulose and lignin disappeared, leaving the absorption peaks of cellulose, whose characteristic peak was at 1314, 1160, 896 cm − 1 (Wei et al 2016). Especially, the absorption peak at 1240 cm − 1 , which belongs to the C-O-C stretching vibration of the aromatic ether, disappeared.…”