Sulphite-promoted delignification of wood: identification of paucidisperse lignosulphonates

AM Bialski, CE Luthe, JL Fong…

Index: Bialski, Alec M.; Luthe, Corinne E.; Fong, Jenny L.; Lewis, Norman G. Canadian Journal of Chemistry, 1986 , vol. 64, p. 1336 - 1344

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Abstract

Paucidisperse lignosulphonates, previously described as a distinct group of compounds called" hemilignins" were conclusively shown to be a complex mixture of monomeric (C9) sulphonic acids. Since these compounds are rapidly solubilized only during the early stages of delignification from softwoods (≤ 30% lignin removal), it can be concluded that they are selectively removed from the secondary wall and not from the middle lamella. This result ...