Fractionation of microfibrillated cellulose and its effects on tensile index and elongation of paper

Ario Madani (Corresponding Author), Harri Kiiskinen, James A. Olson, D. Mark Martinez

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)

Abstract

In this work we examine the fractionation of microfibrillated cellulose (MFC) and its effect on the tensile index and elongation of paper. In the first part of this work, we evaluate the fractionation of commercially available MFC using multiple stages of traditional fractionation unit operations, namely a hydrocyclone, a pressure screen, and a novel technique based upon the control of the threshold for motion in a weak gel. The results indicate that a smaller fibril length average fraction could be obtained using the gel separation technique than using multiple stages of separation in both the hydrocyclone and the pressure screen. With the gel technique we were able to reduce the average fibril length of the MFC from 221 ìm to 100 ìm. In the second part of the work, composite paper samples were formed by addition of fractionated and non-fractionated MFC to chemical wood pulp and the strength of the resulting composites were studied. The results showed 25% improvement in tensile index by addition of 10% MFC and an additional 10% improvement in tensile strength by addition of 10% fractionated MFC using the gel technique.
Original languageEnglish
Pages (from-to)306-311
Number of pages6
JournalNordic Pulp and Paper Research Journal
Volume26
Issue number3
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed

Fingerprint

Fractionation
Cellulose
cellulose
Elongation
fractionation
Gels
gel
gels
Wood chemicals
chemical pulp
wood pulp
Composite materials
tensile strength
methodology
strength (mechanics)
Pulp
index
effect
Tensile strength
sampling

Keywords

  • micro fibrillated cellulose fibre
  • nano composites
  • fibre fractionation

Cite this

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title = "Fractionation of microfibrillated cellulose and its effects on tensile index and elongation of paper",
abstract = "In this work we examine the fractionation of microfibrillated cellulose (MFC) and its effect on the tensile index and elongation of paper. In the first part of this work, we evaluate the fractionation of commercially available MFC using multiple stages of traditional fractionation unit operations, namely a hydrocyclone, a pressure screen, and a novel technique based upon the control of the threshold for motion in a weak gel. The results indicate that a smaller fibril length average fraction could be obtained using the gel separation technique than using multiple stages of separation in both the hydrocyclone and the pressure screen. With the gel technique we were able to reduce the average fibril length of the MFC from 221 {\`i}m to 100 {\`i}m. In the second part of the work, composite paper samples were formed by addition of fractionated and non-fractionated MFC to chemical wood pulp and the strength of the resulting composites were studied. The results showed 25{\%} improvement in tensile index by addition of 10{\%} MFC and an additional 10{\%} improvement in tensile strength by addition of 10{\%} fractionated MFC using the gel technique.",
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author = "Ario Madani and Harri Kiiskinen and Olson, {James A.} and Martinez, {D. Mark}",
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pages = "306--311",
journal = "Nordic Pulp and Paper Research Journal",
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}

Fractionation of microfibrillated cellulose and its effects on tensile index and elongation of paper. / Madani, Ario (Corresponding Author); Kiiskinen, Harri; Olson, James A.; Martinez, D. Mark.

In: Nordic Pulp and Paper Research Journal, Vol. 26, No. 3, 2011, p. 306-311.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Fractionation of microfibrillated cellulose and its effects on tensile index and elongation of paper

AU - Madani, Ario

AU - Kiiskinen, Harri

AU - Olson, James A.

AU - Martinez, D. Mark

PY - 2011

Y1 - 2011

N2 - In this work we examine the fractionation of microfibrillated cellulose (MFC) and its effect on the tensile index and elongation of paper. In the first part of this work, we evaluate the fractionation of commercially available MFC using multiple stages of traditional fractionation unit operations, namely a hydrocyclone, a pressure screen, and a novel technique based upon the control of the threshold for motion in a weak gel. The results indicate that a smaller fibril length average fraction could be obtained using the gel separation technique than using multiple stages of separation in both the hydrocyclone and the pressure screen. With the gel technique we were able to reduce the average fibril length of the MFC from 221 ìm to 100 ìm. In the second part of the work, composite paper samples were formed by addition of fractionated and non-fractionated MFC to chemical wood pulp and the strength of the resulting composites were studied. The results showed 25% improvement in tensile index by addition of 10% MFC and an additional 10% improvement in tensile strength by addition of 10% fractionated MFC using the gel technique.

AB - In this work we examine the fractionation of microfibrillated cellulose (MFC) and its effect on the tensile index and elongation of paper. In the first part of this work, we evaluate the fractionation of commercially available MFC using multiple stages of traditional fractionation unit operations, namely a hydrocyclone, a pressure screen, and a novel technique based upon the control of the threshold for motion in a weak gel. The results indicate that a smaller fibril length average fraction could be obtained using the gel separation technique than using multiple stages of separation in both the hydrocyclone and the pressure screen. With the gel technique we were able to reduce the average fibril length of the MFC from 221 ìm to 100 ìm. In the second part of the work, composite paper samples were formed by addition of fractionated and non-fractionated MFC to chemical wood pulp and the strength of the resulting composites were studied. The results showed 25% improvement in tensile index by addition of 10% MFC and an additional 10% improvement in tensile strength by addition of 10% fractionated MFC using the gel technique.

KW - micro fibrillated cellulose fibre

KW - nano composites

KW - fibre fractionation

M3 - Article

VL - 26

SP - 306

EP - 311

JO - Nordic Pulp and Paper Research Journal

JF - Nordic Pulp and Paper Research Journal

SN - 0283-2631

IS - 3

ER -