Document Type : Research Paper

Authors

• alireza shakeri ¹
• monireh imani ²
• farshad miraki ³

¹ Associate Prof., Dept. of Chemistry, University of Tehran, Tehran, Iran.

² Ph.D. Student of Pulp and Paper Industries, GUASNR, Gorgan University of Agricultural Sciences and Natural Resources,

³ M.Sc., graduated, Department of Chemistry, Golestan University, Gorgan

Abstract

Cellulose is one of the most abundant natural biopolymer on earth is renewable, biodegradable and non-toxic. Micro and Nano-scale cellulose fibers and their applications in composite materials due to their high strength and stiffness combined with low weight, biodegradability and renewability has attracted considerable attention. In this study, Micro-crystalline cellulose (MCC) of the skin of the cotton plant by acid hydrolysis in 2N hydrochloric acid to acid ratio of dough the Nano-crystalline (NCC) were prepared by chemical methods. Effect of hydrolysis conditions on properties such as the crystallinity and crystal size Micro and Nanocrystals cellulose with measurement range into the infra-red February (FT-IR), X-ray diffraction (XRD) were reviewed and The shape and size of the samples by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were studied. Fiber analysis using x-ray showed that increasing the amount of acid in the crystallinity of cotton cellulose Micro- crystalline increase the crystal size does not change Lower moisture uptake. Cotton cellulose Nanocrystals and crystal size greater than Micro- crystalline size were reported.

Keywords

• Micro-crystalline cellulose (MCC)
• Nano crystalline cellulose (NCC)
• the crystallinity
• crystal size
• cotton stem
• Acid hydrolysis

Main Subjects

• Pulp and paper