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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Ready chemical conversion of acid hydrolysis lignin into water-soluble lignosulfonate III: Successive treatment of acid hydrolysis lignin and a lignin model compound by phenolation and arylsulfonation*

Journal of Wood Science volume 45, pages 245–249 (1999)Cite this article

Abstract

The chemical conversion of red pine sulfuric acid lignin (Klason lignin) (SAL) as an acid hydrolysis lignin sample to water-soluble arylsulfonates of lignin derivation (i.e., phenolized SAL) was investigated. Treatment of phenolized SAL with chlorosulfonic acid followed by alkali hydrolysis gave water-soluble sulfonated products with a sulfonic acid group on their aromatic nuclei quantitatively. The products possess 2.0 SO3Na/C9 C6. In contrast, the content of sulfuric acid group in sulfonated SAL was only 0.33C9. Chlorosulfonation of 1-guaiacyl-l-p-hydroxyphenylethane as a phenolized guaiacyl lignin model compound revealed that the sulfonyl chloride group was introduced at thepara position of an aromatic methoxyl group, theortho position of a phenolic hydroxyl group, or both.

References

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  1. Eri Hamaguchi

    Present address: Kougakukan High School, Ise 519-3200, Japan

Authors and Affiliations

  1. Laboratory of Forest Chemistry, School of Agricultural Sciences, Nagoya University, 464-8601, Nagoya, Japan

    Seiichi Yasuda, Eri Hamaguchi & Kyoko Asano

Authors
  1. Seiichi Yasuda
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  2. Eri Hamaguchi
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  3. Kyoko Asano
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Yasuda, S., Hamaguchi, E. & Asano, K. Ready chemical conversion of acid hydrolysis lignin into water-soluble lignosulfonate III: Successive treatment of acid hydrolysis lignin and a lignin model compound by phenolation and arylsulfonation*. J Wood Sci 45, 245–249 (1999). https://doi.org/10.1007/BF01177733

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  • DOI: https://doi.org/10.1007/BF01177733

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