Summary
A series of methylcellulose (MC) samples were successfully synthesized using dimethyl sulphate (DMS) as a methylation reagent in 7 wt% NaOH/12 wt% urea aqueous solution through controlling the reaction conditions. The MC samples were characterized with 1H and 13C NMR, gas chromatography (GC), ultraviolet spectroscopy, viscometry and solubility measurement. Analysis of GC showed that there were no unsubstituted anhydroglucose units (AGU) and few completely substituted AGU along the molecular chains of the MC samples, and there was a uniform distribution of methyl substitution along the MC molecular chains. The stability of 7 wt% NaOH/12 wt% urea solution for the methylation of cellulose was investigated for the first time. The results showed 2 wt% cellulose solution in the 7 wt% NaOH/12 wt% urea solvent was almost stable at room temperature, and little decomposition of the cellulose molecular chains occurred during the methylation reaction.
Similar content being viewed by others
References
Dönges R (1990) Br Polym J 23: 315
Desbrières J, Hirrien M, Ross-Murphy SB (2000) Polymer 41: 2451
Liu H, Zhang L, Takaragi A, Miyamoto T (1998) Polym Bull 40: 741
Nishimura H, Donkai N, Miyamoto T (1997) Macromol Symp 120: 303
Takahashi S, Fujimoto T, Miyamoto T, and Inagaki H (1987) J Polym Sci Part A Polym Chem 25: 987
Takahashi M, Shimazaki M, Yamato J (2001) J Polym Sci Part B Polym Phys 39: 91
Heinze T, Liebert T (2001) Prog Polym Sci 26: 1689
Fink HP, Weigel P, Purz HJ, Ganster J (2001) Prog Polym Sci 26: 1473
McCormick CL, Callais PA (1987) Polymer 28: 2317
Chaudhari SNK, Gouden KC, Srinivasan G, Ekkundi VS (1987) J Polym Sci Part A Polym Chem 25: 337
Heinze T, Liebert T, Klüfers P, Meister F (1999) Cellulose 6: 153
Zhou J, Zhang L (2000) Polym J 2: 86
Cai J, Zhang L, Zhou J, Li H, Chen H, Jin H (2004) Macromol Rapid Commun 25: 1558
Zhang L, Cai J, Zhou J (2005) CN ZL 03128386.1
Zhou J, Zhang L, Deng Q, Wu X (2004) J Polym Sci Part A Polym Chem 42: 5911
Zhou Q, Zhang L, Li M, Wu X, Cheng G (2005) Polym Bull 53: 243
Brown W, Wiskstön R (1965) Eur Polym J 1: 1
Uda K, Meyerhoff G (1961) Macromol Chem 47: 168
Tezuka Y, Imai K, Oshima M, Chiba T (1987) Macromolecules 20: 2413
Sekiguchi Y, Sawatari C, Kondo T (2002) Polym Bull 47: 547
Arisz PW, Kauw JJ, Boon JJ (1995) Carbohydr Res 271: 1
Kondo T (1997) J Polym Sci Part B Polym Phys 40: 717
Takahashi S, Fujimoto T, Barua BM, Miyamoto T, Inagaki H (1986) J Polym Sci Part A Polym Chem 24: 2981
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Ke, H., Zhou, J. & Zhang, L. Structure and physical properties of methylcellulose synthesized in NaOH/urea solution. Polym. Bull. 56, 349–357 (2006). https://doi.org/10.1007/s00289-006-0507-5
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00289-006-0507-5