Characterization of non-wood lignin and its hydoxymethylated derivatives by spectroscopy and self-assembling investigations

0345573 - FZÚ 2011 RIV RO eng J - Journal Article
Todorcius, T. - Capraru, A-M. - Kratochvílová, Irena - Popa, V.I.
Characterization of non-wood lignin and its hydoxymethylated derivatives by spectroscopy and self-assembling investigations.
Cellulose Chemistry and Technology. Roč. 43, 9-10 (2009), 399-408. ISSN 0576-9787. E-ISSN 0576-9787
Institutional research plan: CEZ:AV0Z10100520
Keywords : lignin * hydroxymethylation * FTIR * UV-VIS * fluorescence * AFM
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 0.320, year: 2009

Two types of non-wood lignins, namely wheat straw lignin (L1) and Sarkanda grass lignin (L2) (offered by Granit Recherche Devloppement S.A., Lausanne) were characterized, together with their hydroxymethylated derivatievs. To this end, the afore-mentioned lignins have been subjected to hydroxymethylation, under optimal conditions of temperature, time and pH. The unmodified and the hydroxymethylated lignins were analyzed by spectroscopics methods (FTIR, UV-VIS and fluorescence spectroscopy), and atomic force microscopy (ATM). The results point out that the reactivity level of lignin depends on its origin and structure of lignin, while the characteristics of the synthesized products result from the modifications induced by the new functional groups.
Permanent Link: http://hdl.handle.net/11104/0186814