4.6 Article

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

Journal

ACS OMEGA
Volume 7, Issue 8, Pages 7074-7083

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsomega.1c06773

Keywords

-

Funding

  1. Academy of Finland [315768]
  2. Business Finland [42472/31/2020]

Ask authors/readers for more resources

The HCl gas treatment on Scots pine wood resulted in a well-preserved cellular structure, with higher initial moisture content leading to more degradation of hemicellulose. Interestingly, the hydrogen-deuterium exchange technique showed an increase in accessible OH group concentration despite the loss in hemicellulose. The HCl gas treatment also reduced the concentration of absorbed D2O molecules.
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.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available