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Anna-Stiina Jääskeläinen

Researcher at VTT Technical Research Centre of Finland

Publications -  60
Citations -  1528

Anna-Stiina Jääskeläinen is an academic researcher from VTT Technical Research Centre of Finland. The author has contributed to research in topics: Raman spectroscopy & Kraft process. The author has an hindex of 21, co-authored 60 publications receiving 1355 citations. Previous affiliations of Anna-Stiina Jääskeläinen include Helsinki University of Technology & Stora Enso.

Papers
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Journal ArticleDOI

Aqueous organic solvent fractionation as means to improve lignin homogeneity and purity

Anna-Stiina Jääskeläinen, +3 more
- 01 Sep 2017 - 
TL;DR: In this paper, a protocol for kraft lignin precipitation fractionation from aqueous ethanol, acetone and propyleneglycol monomethyl ether solution by adding water as nonsolvent was described.
Journal ArticleDOI

Aqueous acetone fractionation of kraft, organosolv and soda lignins.

Juan Domínguez-Robles, +5 more
- 01 Jan 2018 - 
TL;DR: The results illustrate that the proposed aqueous acetone fractionation protocol could indeed produce pure and uniform lignin fraction and it was applicable for lignins from different sources.
Journal ArticleDOI

The effect of isolation method on the chemical structure of residual lignin

Anna-Stiina Jääskeläinen, +4 more
- 06 Sep 2003 - 
TL;DR: In this article, the structures of residual lignins isolated by these three methods are compared, and the new two-step isolation procedure gave properties between the preparations of enzymatic and acidolytic hydrolyses.
Journal ArticleDOI

Ultra Violet Resonance Raman Spectroscopy in Lignin Analysis: Determination of Characteristic Vibrations of p-Hydroxyphenyl, Guaiacyl, and Syringyl Lignin Structures

Anna-Maija Saariaho, +3 more
- 01 Jan 2003 - 
TL;DR: The characteristic bands of the three structural units were also found from the compression wood, softwood, and hardwood samples, indicating that UVRR spectroscopy can be applied for the determination of chemical structures of lignin.
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Natural and artificial ageing of spruce wood as observed by FTIR-ATR and UVRR spectroscopy

Christelle Ganne-Chédeville, +4 more
- 01 Feb 2012 - 
TL;DR: In this article, Fourier transform infrared spec- troscopy (FTIR-ATR) and ultraviolet resonance Raman (UVRR) spectroscopy were used to analyze spruce samples.