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Cellulose
Published in: Cellulose 6/2012

01-12-2012 | Original Paper

Improved surface properties of CTMP fibers with enzymatic pretreatment of wood chips prior to refining

Authors: Xiaochun Lei, Yu Zhao, Kecheng Li, Andre Pelletier

Published in: Cellulose | Issue 6/2012

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Abstract

Surface properties of chemithermomechanical pulp (CTMP) fibers produced from enzymatically pretreated eucalyptus wood chips prior to refining were investigated by Field Emission Scanning Electron Microscope (FE-SEM), Transmission Electron Microscope (TEM) and X-ray Photoelectron Spectroscopy (XPS). The results showed that in a traditional CTMP refining process most fiber disruptions occur in the middle lamella (ML) leaving behind a significant amount of hydrophobic materials on the resulting fiber surface. However, in a Bio-CTMP refining process, fiber fractures preferentially take place in the primary (P) and secondary 1 (S1) layers or the S1 and secondary 2 (S2) layers, which results in more fibrillation being generated in the subsequent refining thus improving inter-fiber bonding strength and paper strength. XPS chemical composition analysis together with pulp physical strength property showed that the surfaces of Bio-CTMP fibers become enriched with a greater proportion of carbohydrates in comparison with CTMP fiber surface, which supports FE-SEM and TEM observations.
previous article Effect of urea on cellulose degradation under conditions of alkaline pulping
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Metadata
Title
Improved surface properties of CTMP fibers with enzymatic pretreatment of wood chips prior to refining
Authors
Xiaochun Lei
Yu Zhao
Kecheng Li
Andre Pelletier
Publication date
01-12-2012
Publisher
Springer Netherlands
Published in
Cellulose / Issue 6/2012
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-012-9792-3

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