Wuhan University Journal of Natural Sciences

, Volume 3, Issue 3, pp 359–365 | Cite as

Studies on graft copolymerization of acrylic acid onto ramie fibers with chromic acid initiation system

  • Xiao Chaobo
  • Wu Lili
  • Ren Shaozhi


The graft copolymerization of acrylic acid (AA) with unswollen and swollen ramie fibers using chromic acid (H2CrO4) as the initiator has been studied in the presence of air. The effects of initiator concentration, monomer concentration, perchloric acid (HClO4) concentration, time of polymerization, reaction temperature, and amount of ramie fibers on the graft percentage have been found out. The graft copolymer was characterized by IR spectra, scanning electron microscopy (SEM), differential thermal analysis (DTA), and thermogravimertric analysis (TGA).

Key words

graft copolymerization acrylic acid ramic fiber chromic acid 


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  1. 1.
    Eromosele I C, Ahmed R B. Graft copolymerization of methacrylonitrile on kenaf fibers by cerric ion-toluenc redox pair.J Appl Polym Sci, 1996,59:1987–1993CrossRefGoogle Scholar
  2. 2.
    Vitta S B, Stahel E P, Stannett V T. The preparation and properties of acrylic and methacrylic acid grafted cellulose prepared by ceric ion initiationI: water retention properties.J Appl Polym Sci, 1986,32:5799–5810CrossRefGoogle Scholar
  3. 3.
    Yoshinobu M, Morita M, Higuchi M,et al, Morphological study of hydrogels of cellulosic water absorbents by CRY-SEM observation.J Appl Polym Sci, 1994,53: 1203–1209CrossRefGoogle Scholar
  4. 4.
    Ibrahim N A, Shosha M H Abo. Polymerizations of ethylene and propylene initiated by milled metallic oxidesI characterizations of the mechanochemically produced polymers.J Appl Polym Sci, 1993,49, 291–298CrossRefGoogle Scholar
  5. 5.
    Vitta S B, Stahel E P, Stannett V T. The preparation and properties of acrylic and methacrylic acid grafted cellulose prepared by ceric ion initiation. part 1. preparation of the grafted cellulose.J Macromol Sci Chem, 1985, A22:579–590CrossRefGoogle Scholar
  6. 6.
    Lepoutre P, Hui S H, Robertson A A. The water absorbency of hydrolyzed polyacrylonitrile-grafted cellulose fibers.J Appl Polym Sci, 1973,17: 3143–3156CrossRefGoogle Scholar
  7. 7.
    Rahman M, Rocek J. Chromium (IV)oxidation of primary and secondary alcohols.J Amer Chem Soc, 1971,93:5455–5462CrossRefGoogle Scholar
  8. 8.
    Rahman M, Rocek J. Mechanism of chromic acid oxidation of isopropyl alcohol evidence for oxidation by chromium (IV).J Amer Chem Soc, 1971,93:5462–5468CrossRefGoogle Scholar
  9. 9.
    Wiberg K B, Mukherjee S K. Chromic acid oxidation of isopropyl alcohol oxidation by chromium (IV).J Amer Chem Soc, 1974,96:1884–1889CrossRefGoogle Scholar
  10. 10.
    Viswanathan S Santappa M. Vinyl polymerization initiated by chromic acid reducing agent systems.J Polym Sci, A-1, 1971,9:1685–1699CrossRefGoogle Scholar
  11. 11.
    Samal R K, Nayak P L. Polymerization of acrylonitrile initiated by thiourea-chromium (IV) redox system.J Polym Sci, Polym Chem Ed, 1977,15: 2603–2611CrossRefGoogle Scholar
  12. 12.
    Samal R K, Satrusallya S C, Sahoo P K. Hexavalent-chromium-initiated graft copolymerization of metyl methacrylate onto cellulose.J Appl Polym Sci, 1984,29: 319–327CrossRefGoogle Scholar
  13. 13.
    Hebeish A, Mehta P C. Cerium-initiated grafting of acrylonitrile onto cellulosic materials.J Appl Polym Sci, 1968,12: 1625–1647CrossRefGoogle Scholar
  14. 14.
    Pati N C, Pradhan A K, Nayak P L. Grafting vinyl monomers onto cellulose VI graft copolymerization of methyl methacrylate onto cellulose using potassium permanganate as the initiator.J Macromol Sci Chem, 1982, A-17:501–512CrossRefGoogle Scholar
  15. 15.
    Khalil H I, El-Rafi M H, Hebeish A. Pentavalent vanadium ion grafting of metyl methacrylate onto cotton cellulose.J Appl Polym Sci, 1981,26:149–157CrossRefGoogle Scholar
  16. 16.
    Abdel-Hafiz S A. Potssium permanganate/thioureadioxide redox system-induced grafting of methacrylic acid onto loomstate cotton fabric.J Appl Polym Sci, 1995,58: 2005–2011CrossRefGoogle Scholar

Copyright information

© Springer 1998

Authors and Affiliations

  • Xiao Chaobo
    • 1
  • Wu Lili
    • 1
  • Ren Shaozhi
    • 1
  1. 1.College of ChemistryWuhan UniversityWuhanChina

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