Characterization of fiber wall surface structure of chemically modified TMP fibers from Norway spruce

Sabine Heinemann, Shaoxia Wang, Jouko Peltonen, Marjatta Kleen

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

Effects of chemical treatments on micro and nano scale surface structure of 1st stage TMP latewood fibers from Norway spruce were investigated. The chemicals applied were buffered sodium oxalate and hydrochloric acid. The outer as well as the inner fiber wall layers of the untreated and chemically treated fibers were separately analyzed by light microscopy, Atomic Force Microscopy (AFM) and Field-Emission Scanning Electron Microscopy (FE-SEM). The applied characterization methods allow to demonstrate the effect of different treatments on the fiber surface structure, both visually and quantitatively. The outer fiber wall areas (ML/P) appeared as intact bands surrounding the fiber and they were clearly rougher than areas of exposed inner fiber wall (S2). The roughness of the outer fiber wall areas increased most in the sodium oxalate treatment. The results indicated formation of more surface pores on the exposed S2 fiber wall areas than on the corresponding outer fiber wall areas as a result of the chemical treatments. The hydrochloric acid treatment seemed to increase most the surface porosity of the S2 wall areas.
Original languageEnglish
Pages (from-to)21-30
JournalNordic Pulp and Paper Research Journal
Volume26
Issue number1
DOIs
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed

Fingerprint

Thymidine Monophosphate
Surface structure
Picea abies
Fibers
hydrochloric acid
chemical treatment
oxalates
sodium
latewood
atomic force microscopy
roughness
Oxalic Acid
acid treatment
Hydrochloric Acid
porosity
light microscopy
Hydrochloric acid
oxalate
scanning electron microscopy
Sodium

Keywords

  • Atomic force microscopy (AFM)
  • chemical treatment
  • field emission scanning electron microscopy (FE-SEM)
  • latewood fiber
  • light microscopy
  • mechanical pulp
  • spruce (Picea abies)
  • surface structure
  • thermomechanical pulp (TMP)

Cite this

Heinemann, Sabine ; Wang, Shaoxia ; Peltonen, Jouko ; Kleen, Marjatta. / Characterization of fiber wall surface structure of chemically modified TMP fibers from Norway spruce. In: Nordic Pulp and Paper Research Journal. 2011 ; Vol. 26, No. 1. pp. 21-30.
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title = "Characterization of fiber wall surface structure of chemically modified TMP fibers from Norway spruce",
abstract = "Effects of chemical treatments on micro and nano scale surface structure of 1st stage TMP latewood fibers from Norway spruce were investigated. The chemicals applied were buffered sodium oxalate and hydrochloric acid. The outer as well as the inner fiber wall layers of the untreated and chemically treated fibers were separately analyzed by light microscopy, Atomic Force Microscopy (AFM) and Field-Emission Scanning Electron Microscopy (FE-SEM). The applied characterization methods allow to demonstrate the effect of different treatments on the fiber surface structure, both visually and quantitatively. The outer fiber wall areas (ML/P) appeared as intact bands surrounding the fiber and they were clearly rougher than areas of exposed inner fiber wall (S2). The roughness of the outer fiber wall areas increased most in the sodium oxalate treatment. The results indicated formation of more surface pores on the exposed S2 fiber wall areas than on the corresponding outer fiber wall areas as a result of the chemical treatments. The hydrochloric acid treatment seemed to increase most the surface porosity of the S2 wall areas.",
keywords = "Atomic force microscopy (AFM), chemical treatment, field emission scanning electron microscopy (FE-SEM), latewood fiber, light microscopy, mechanical pulp, spruce (Picea abies), surface structure, thermomechanical pulp (TMP)",
author = "Sabine Heinemann and Shaoxia Wang and Jouko Peltonen and Marjatta Kleen",
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Characterization of fiber wall surface structure of chemically modified TMP fibers from Norway spruce. / Heinemann, Sabine; Wang, Shaoxia; Peltonen, Jouko; Kleen, Marjatta.

In: Nordic Pulp and Paper Research Journal, Vol. 26, No. 1, 2011, p. 21-30.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Characterization of fiber wall surface structure of chemically modified TMP fibers from Norway spruce

AU - Heinemann, Sabine

AU - Wang, Shaoxia

AU - Peltonen, Jouko

AU - Kleen, Marjatta

PY - 2011

Y1 - 2011

N2 - Effects of chemical treatments on micro and nano scale surface structure of 1st stage TMP latewood fibers from Norway spruce were investigated. The chemicals applied were buffered sodium oxalate and hydrochloric acid. The outer as well as the inner fiber wall layers of the untreated and chemically treated fibers were separately analyzed by light microscopy, Atomic Force Microscopy (AFM) and Field-Emission Scanning Electron Microscopy (FE-SEM). The applied characterization methods allow to demonstrate the effect of different treatments on the fiber surface structure, both visually and quantitatively. The outer fiber wall areas (ML/P) appeared as intact bands surrounding the fiber and they were clearly rougher than areas of exposed inner fiber wall (S2). The roughness of the outer fiber wall areas increased most in the sodium oxalate treatment. The results indicated formation of more surface pores on the exposed S2 fiber wall areas than on the corresponding outer fiber wall areas as a result of the chemical treatments. The hydrochloric acid treatment seemed to increase most the surface porosity of the S2 wall areas.

AB - Effects of chemical treatments on micro and nano scale surface structure of 1st stage TMP latewood fibers from Norway spruce were investigated. The chemicals applied were buffered sodium oxalate and hydrochloric acid. The outer as well as the inner fiber wall layers of the untreated and chemically treated fibers were separately analyzed by light microscopy, Atomic Force Microscopy (AFM) and Field-Emission Scanning Electron Microscopy (FE-SEM). The applied characterization methods allow to demonstrate the effect of different treatments on the fiber surface structure, both visually and quantitatively. The outer fiber wall areas (ML/P) appeared as intact bands surrounding the fiber and they were clearly rougher than areas of exposed inner fiber wall (S2). The roughness of the outer fiber wall areas increased most in the sodium oxalate treatment. The results indicated formation of more surface pores on the exposed S2 fiber wall areas than on the corresponding outer fiber wall areas as a result of the chemical treatments. The hydrochloric acid treatment seemed to increase most the surface porosity of the S2 wall areas.

KW - Atomic force microscopy (AFM)

KW - chemical treatment

KW - field emission scanning electron microscopy (FE-SEM)

KW - latewood fiber

KW - light microscopy

KW - mechanical pulp

KW - spruce (Picea abies)

KW - surface structure

KW - thermomechanical pulp (TMP)

U2 - 10.3183/NPPRJ-2011-26-01-p021-030

DO - 10.3183/NPPRJ-2011-26-01-p021-030

M3 - Article

VL - 26

SP - 21

EP - 30

JO - Nordic Pulp and Paper Research Journal

JF - Nordic Pulp and Paper Research Journal

SN - 0283-2631

IS - 1

ER -