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Structural and thermal characterization of novel organosolv lignins from wood and herbaceous sources

Sammendrag

This study demonstrates the effects of structural variations of lignins isolated via an organosolv process from different woody and herbaceous feedstocks on their thermal stability profiles. The organosolv lignins were first analysed for impurities, and structural features were determined using the default set of gel permeation chromatography, FT-IR spectroscopy, quantitative 31 P NMR spectroscopy and semi-quantitative 1 H- 13 C HSQC analysis. Pyrolysis-, O 2 - and CO 2 -reactivity of the organosolv lignins were investigated by thermogravimetric analysis (TGA), and volatile formation in various heating cycles was mapped by head-space GC-MS analysis. Revealed reactivities were correlated to the presence of identified impurities and structural features typical for the organosolv lignins. Data suggest that thermogravimetric analysis can eventually be used to delineate a lignin character when basic information regarding its isolation method is available.

Kategori

Vitenskapelig artikkel

Språk

Engelsk

Forfatter(e)

Institusjon(er)

  • Ollscoil Luimnigh
  • Università degli Studi 'Federico II' di Napoli
  • SINTEF Industri / Metallproduksjon og prosessering
  • SINTEF Industri / Bioteknologi og nanomedisin
  • Università Ca' Foscari di Venezia
  • Luleå tekniska universitet

Dato

17.07.2020

År

2020

Publisert i

Processes

ISSN

2227-9717

Forlag

MDPI

Årgang

8

Hefte nr.

7

Side(r)

1 - 21

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