Welcome to Chemistry and Industry of Forest Products,

Chemistry and Industry of Forest Products ›› 2015, Vol. 35 ›› Issue (6): 1-7.doi: 10.3969/j.issn.0253-2417.2015.06.001

    Next Articles

Preparation of Porous Cellulosic Absorbing Materials

WANG Ai-ting1, LIU He2, LIU Shi-wei1, SHANG Shi-bin2, YU Shi-tao1   

  1. 1. College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;
    2. Institute of Chemical Industry of Forest Products, CAF, Nanjing 210042, China
  • Received:2014-10-28 Online:2015-12-25 Published:2015-12-28

Abstract: Cellulose was dissolved in NaOH/urea/H2O solution system and crosslinked with neopentyl glycol diglycidyl ether(NGDE).Then, the crosslinked products were purified by deionized water and freeze-drying to prepare porous cellulosic absorbing materials.The chemical composition, crystal structure, thermostability and morphological feature of the materials were analyzed by using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM), respectively.The effects including the amount of NGDE and the mass fraction of hydrogel on the density and the water absorption ability of porous cellulosic materials were investigated.The results showed that 4 g cellulose was dissolved in 100g NaOH/urea/H2O solution and the amount of NGDE was 18 mL and the mass fraction of the hydrogel was 1.5%, the density of the prepared materials reached 15.7 mg/cm3 and water absorption ration was 37 times.The structure of materials prepared in this condition was characterized. The results showed that the cellulosic absorbing materials exhibited continuous network pore structure and the crystal structure was transformed from the celluloseⅠcrystalline structure to amorphous structure.The porous cellulosic absorbing materials started to degrade above 250℃.This showed high thermal stability.

Key words: NaOH/urea/H2O, neopentyl glycol diglycidyl ether, porous cellulosic absorbing materials

CLC Number: