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Journal of Wood Science

, Volume 47, Issue 5, pp 394–399 | Cite as

Development of high-retention water absorbent from cellulosic materials: water absorbent from bleached kraft pulp

Note

Abstract

This paper describes the synthesis of highretention water absorbents from kraft pulp and examination of their properties. A bleached kraft pulp from mixed hardwoods (LBKP) was carboxymethylated, then crosslinked with polyethylene glycol diglycidyl ethers (PEGDGE) with different degrees of polymerization under different conditions. A crosslinking agent with longer chain length might be advantageous for preparing a water absorbent with high water retention, and water retention could be improved at lower molar ratio of the crosslinking agent to the glucose unit. Isolation of carboxymethylated LBKP before crosslinking was advantageous for higher water absorbence. A water absorbent with a water retention value of as high as 500 times its weight was obtained.

Key words

Cellulose Carboxymethyl cellulose Super water absorbent Crosslinking Water retention value 

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Copyright information

© The Japan Wood Research Society 2001

Authors and Affiliations

  1. 1.Laboratory of Wood Chemistry, Department of Biomaterial Sciences, Graduate School of Agricultural and Life SciencesThe University of TokyoTokyoJapan

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