Abstract
| Original language | English |
|---|---|
| Title of host publication | Characterization of Lignocellulosic Materials |
| Publisher | Wiley-Blackwell |
| Chapter | 3 |
| Pages | 36-59 |
| ISBN (Electronic) | 978-1-4443-0542-5 |
| ISBN (Print) | 978-1-4051-5880-0 |
| DOIs | |
| Publication status | Published - 2008 |
| MoE publication type | A3 Part of a book or another research book |
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Surface Characterization of Mechanical Pulp Fibers by Contact Angle Measurement, Polyelectrolyte Adsorption, XPS and AFM. / Stenius, Per; Koljonen, Krista.
Characterization of Lignocellulosic Materials. Wiley-Blackwell, 2008. p. 36-59.Research output: Chapter in Book/Report/Conference proceeding › Chapter or book article › Scientific › peer-review
TY - CHAP
T1 - Surface Characterization of Mechanical Pulp Fibers by Contact Angle Measurement, Polyelectrolyte Adsorption, XPS and AFM
AU - Stenius, Per
AU - Koljonen, Krista
PY - 2008
Y1 - 2008
N2 - The surfaces of pressure groundwood (PGW), thermomechanical pulp (TMP), and chemithermomechanical pulp (CTMP) were studied by atomic force microscopy (AFM), x-ray photoelectron spectroscopy (XPS), contact angle measurement, and polyelectrolyte adsorption. The combination of these methods yielded a comprehensive picture of the chemistry, adhesive properties and morphology of the fiber surfaces and how they were affected by washing, peroxide bleaching, dithionite bleaching, and ozone treatment. Overall, the fiber surfaces were found to be very heterogeneous. Sulfite treatment in the production of CTMP pulp, peroxide bleaching under alkaline conditions, and ozone treatment modified especially the lignin and/or the pectins so that more acidic groups were introduced into the pulps. The adhesion between water and fibers increased when hydrophobic extractives (pitch) were removed by extraction with dichloromethane.
AB - The surfaces of pressure groundwood (PGW), thermomechanical pulp (TMP), and chemithermomechanical pulp (CTMP) were studied by atomic force microscopy (AFM), x-ray photoelectron spectroscopy (XPS), contact angle measurement, and polyelectrolyte adsorption. The combination of these methods yielded a comprehensive picture of the chemistry, adhesive properties and morphology of the fiber surfaces and how they were affected by washing, peroxide bleaching, dithionite bleaching, and ozone treatment. Overall, the fiber surfaces were found to be very heterogeneous. Sulfite treatment in the production of CTMP pulp, peroxide bleaching under alkaline conditions, and ozone treatment modified especially the lignin and/or the pectins so that more acidic groups were introduced into the pulps. The adhesion between water and fibers increased when hydrophobic extractives (pitch) were removed by extraction with dichloromethane.
U2 - 10.1002/9781444305425.ch3
DO - 10.1002/9781444305425.ch3
M3 - Chapter or book article
SN - 978-1-4051-5880-0
SP - 36
EP - 59
BT - Characterization of Lignocellulosic Materials
PB - Wiley-Blackwell
ER -