Structural properties and thermal stability of nano crystalline cellulose produced from waste paper

Document Type : Research Paper

Authors

1 University of Mohaghegh Ardabili

2 phD. graduated at University of Tehran

3 BSc student of of Wood Science and Technology, Department of Natural Resources, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili. Ardabil, Iran.

Abstract

In this study, the structural properties and thermal stability of cellulose nanocrystals produced from waste paper were investigated. Acid hydrolysis method was used to produce cellulose nanocrystals. Dimensions of nanoparticles were measured by FE-SEM microscope. To study the chemical structure and degree of crystallinity of nanoparticles, Fourier infrared spectrometry (FT-IR) and X-ray diffraction (XRD) were utilized, respectively. Thermogravimetric analysis (TGA) was performed to evaluate the thermal stability of nanoparticles. The diameter of nanoparticles obtained from virgin wood fibers, recycled fibers from MDF waste and waste paper were 18.94, 25.22 and 24.11 nm, respectively. The results showed a similar structure between nanocelluloses produced from different fibers, but a slight decrease in the thermal stability of nanocelluloses from waste paper was observed. Due to the similarity of the structure and properties of nanocellulose obtained from waste paper as compared to nanocelluloses obtained from other fibers, waste paper can be used as an available and valuable raw material for the production of cellulose nanocrystals.

Keywords


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