Hydrophobization of cellophane and cellulose nano-fibrils films by supercritical state carbon dioxide impregnation with walnut oil

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

Bio-based films are typically sensitive towards moisture which limits the industrial applicability. In this study the cellulosic films produced from cellulose nanofibrils and cellophane were treated using supercritical state carbon dioxide impregnation with hydrophobic polyunsaturated oil mixture (walnut oil). The effects on surface hydrophobicity with cellophane films were clear and indisputable. Water contact angles of non-treated cellophane, walnut oil impregnated and further 1,6-hexanediol dimethacrylate crosslinked films were 62, 82 and 91°, respectively. Also the moisture absorption and water vapour transmission rate as well as oxygen transmission rate at 80% relative humidity decreased as a result of supercritical state carbon dioxide impregnation. Water vapour transmission rate of walnut oil impregnated cellulose nanofibrils film decreased by 30% as compared to non-treated film. Based on the FT-IR analysis and surface roughness measurements the walnut oil penetrated better into the structure of cellophane as compared to CNF film. The developed hydrophobization method can be exploited in strengthening the position of cellulosic films in high performance film applications.
Original languageEnglish
Pages (from-to)541-547
JournalNordic Pulp and Paper Research Journal
Volume31
Issue number4
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

Fingerprint

walnut oil
Cellophane
cellophane
films (materials)
Carbon Dioxide
Impregnation
Cellulose
cellulose
Carbon dioxide
Oils
carbon dioxide
oil
nanofibers
Steam
Water vapor
water vapor
Moisture
Cellulose films
Roughness measurement
moisture

Keywords

  • cellulose
  • film
  • barrier
  • walnut oil
  • cellphane

Cite this

@article{083cbedfb40d4566bd9c7f1b1b2b8b75,
title = "Hydrophobization of cellophane and cellulose nano-fibrils films by supercritical state carbon dioxide impregnation with walnut oil",
abstract = "Bio-based films are typically sensitive towards moisture which limits the industrial applicability. In this study the cellulosic films produced from cellulose nanofibrils and cellophane were treated using supercritical state carbon dioxide impregnation with hydrophobic polyunsaturated oil mixture (walnut oil). The effects on surface hydrophobicity with cellophane films were clear and indisputable. Water contact angles of non-treated cellophane, walnut oil impregnated and further 1,6-hexanediol dimethacrylate crosslinked films were 62, 82 and 91°, respectively. Also the moisture absorption and water vapour transmission rate as well as oxygen transmission rate at 80{\%} relative humidity decreased as a result of supercritical state carbon dioxide impregnation. Water vapour transmission rate of walnut oil impregnated cellulose nanofibrils film decreased by 30{\%} as compared to non-treated film. Based on the FT-IR analysis and surface roughness measurements the walnut oil penetrated better into the structure of cellophane as compared to CNF film. The developed hydrophobization method can be exploited in strengthening the position of cellulosic films in high performance film applications.",
keywords = "cellulose, film, barrier, walnut oil, cellphane",
author = "Jari Vartiainen and Jani Pelto and Timo Kaljunen and Eija Kentt{\"a}",
year = "2016",
language = "English",
volume = "31",
pages = "541--547",
journal = "Nordic Pulp and Paper Research Journal",
issn = "0283-2631",
publisher = "De Gruyter",
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}

Hydrophobization of cellophane and cellulose nano-fibrils films by supercritical state carbon dioxide impregnation with walnut oil. / Vartiainen, Jari; Pelto, Jani; Kaljunen, Timo; Kenttä, Eija.

In: Nordic Pulp and Paper Research Journal, Vol. 31, No. 4, 2016, p. 541-547.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Hydrophobization of cellophane and cellulose nano-fibrils films by supercritical state carbon dioxide impregnation with walnut oil

AU - Vartiainen, Jari

AU - Pelto, Jani

AU - Kaljunen, Timo

AU - Kenttä, Eija

PY - 2016

Y1 - 2016

N2 - Bio-based films are typically sensitive towards moisture which limits the industrial applicability. In this study the cellulosic films produced from cellulose nanofibrils and cellophane were treated using supercritical state carbon dioxide impregnation with hydrophobic polyunsaturated oil mixture (walnut oil). The effects on surface hydrophobicity with cellophane films were clear and indisputable. Water contact angles of non-treated cellophane, walnut oil impregnated and further 1,6-hexanediol dimethacrylate crosslinked films were 62, 82 and 91°, respectively. Also the moisture absorption and water vapour transmission rate as well as oxygen transmission rate at 80% relative humidity decreased as a result of supercritical state carbon dioxide impregnation. Water vapour transmission rate of walnut oil impregnated cellulose nanofibrils film decreased by 30% as compared to non-treated film. Based on the FT-IR analysis and surface roughness measurements the walnut oil penetrated better into the structure of cellophane as compared to CNF film. The developed hydrophobization method can be exploited in strengthening the position of cellulosic films in high performance film applications.

AB - Bio-based films are typically sensitive towards moisture which limits the industrial applicability. In this study the cellulosic films produced from cellulose nanofibrils and cellophane were treated using supercritical state carbon dioxide impregnation with hydrophobic polyunsaturated oil mixture (walnut oil). The effects on surface hydrophobicity with cellophane films were clear and indisputable. Water contact angles of non-treated cellophane, walnut oil impregnated and further 1,6-hexanediol dimethacrylate crosslinked films were 62, 82 and 91°, respectively. Also the moisture absorption and water vapour transmission rate as well as oxygen transmission rate at 80% relative humidity decreased as a result of supercritical state carbon dioxide impregnation. Water vapour transmission rate of walnut oil impregnated cellulose nanofibrils film decreased by 30% as compared to non-treated film. Based on the FT-IR analysis and surface roughness measurements the walnut oil penetrated better into the structure of cellophane as compared to CNF film. The developed hydrophobization method can be exploited in strengthening the position of cellulosic films in high performance film applications.

KW - cellulose

KW - film

KW - barrier

KW - walnut oil

KW - cellphane

M3 - Article

VL - 31

SP - 541

EP - 547

JO - Nordic Pulp and Paper Research Journal

JF - Nordic Pulp and Paper Research Journal

SN - 0283-2631

IS - 4

ER -