Effect of Moisture on Polymer Deconstruction in HCl Gas Hydrolysis of Wood

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

28 Lataukset (Pure)

Abstrakti

The HCl gas system previously used to produce cellulose nanocrystals was applied on Scots pine wood, aiming at a controlled deconstruction of its macrostructure while understanding the effect on its microstructure. The HCl gas treatments resulted in a well-preserved cellular structure of the wood. Differences in wood initial moisture content (iMC) prior to HCl gas treatment played a key role in hydrolysis rather than the studied range of exposure time to the acidic gas. Higher iMCs were correlated with a higher degradation of hemicellulose, while crystalline cellulose microfibrils were not largely affected by the treatments. Remarkably, the hydrogen-deuterium exchange technique showed an increase in accessible OH group concentration at higher iMCs, despite the additional loss in hemicelluloses. Unrelated to changes in the accessible OH group concentration, the HCl gas treatment reduced the concentration of absorbed D2O molecules.

AlkuperäiskieliEnglanti
Sivut7074–7083
JulkaisuACS Omega
Vuosikerta7
Numero8
Varhainen verkossa julkaisun päivämäärä16 helmik. 2022
DOI - pysyväislinkit
TilaJulkaistu - 1 maalisk. 2022
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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