Hydrophobization and smoothing of cellulose nanofibril films by cellulose ester coatings

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

The Cellulose nanofibrils (CNF), also referred to as nanocellulose, is one of the most studied bio-based material in recent year, which has good potential in the future for packaging applications due to its excellent mechanical strength and oxygen barrier properties. In the future, CNF films may also find new applications for example in printed electronics, if the surface smoothness of CNF films can be improved. One way to improve surface smoothness is to use thin coating solutions with zero porosity, such as molar mass controlled cellulose ester coatings. In this study, we have coated CNF films using molar mass controlled cellulose esters with different side chain lengths forming 3-layer film (ester-CNF-ester). These coatings improved significantly the smoothness of CNF films. The 3-layer films have also good water vapor barrier and mechanical properties and the films are heat-sealable, which enable various new applications in the future.
Original languageEnglish
Pages (from-to)160-165
Number of pages6
JournalCarbohydrate Polymers
Volume170
DOIs
Publication statusPublished - 15 Aug 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

Cellulose films
Cellulose
Esters
Coatings
Molar mass
Steam
Chain length
Water vapor
Strength of materials
Packaging
Electronic equipment
Porosity
Oxygen
Mechanical properties

Keywords

  • cellulose nanofibrils
  • CNF
  • long chain cellulose esters
  • mulktilayer films
  • barrier

Cite this

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title = "Hydrophobization and smoothing of cellulose nanofibril films by cellulose ester coatings",
abstract = "The Cellulose nanofibrils (CNF), also referred to as nanocellulose, is one of the most studied bio-based material in recent year, which has good potential in the future for packaging applications due to its excellent mechanical strength and oxygen barrier properties. In the future, CNF films may also find new applications for example in printed electronics, if the surface smoothness of CNF films can be improved. One way to improve surface smoothness is to use thin coating solutions with zero porosity, such as molar mass controlled cellulose ester coatings. In this study, we have coated CNF films using molar mass controlled cellulose esters with different side chain lengths forming 3-layer film (ester-CNF-ester). These coatings improved significantly the smoothness of CNF films. The 3-layer films have also good water vapor barrier and mechanical properties and the films are heat-sealable, which enable various new applications in the future.",
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Hydrophobization and smoothing of cellulose nanofibril films by cellulose ester coatings. / Willberg-Keyriläinen, Pia; Vartiainen, Jari; Pelto, Jani; Ropponen, Jarmo.

In: Carbohydrate Polymers, Vol. 170, 15.08.2017, p. 160-165.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Hydrophobization and smoothing of cellulose nanofibril films by cellulose ester coatings

AU - Willberg-Keyriläinen, Pia

AU - Vartiainen, Jari

AU - Pelto, Jani

AU - Ropponen, Jarmo

PY - 2017/8/15

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AB - The Cellulose nanofibrils (CNF), also referred to as nanocellulose, is one of the most studied bio-based material in recent year, which has good potential in the future for packaging applications due to its excellent mechanical strength and oxygen barrier properties. In the future, CNF films may also find new applications for example in printed electronics, if the surface smoothness of CNF films can be improved. One way to improve surface smoothness is to use thin coating solutions with zero porosity, such as molar mass controlled cellulose ester coatings. In this study, we have coated CNF films using molar mass controlled cellulose esters with different side chain lengths forming 3-layer film (ester-CNF-ester). These coatings improved significantly the smoothness of CNF films. The 3-layer films have also good water vapor barrier and mechanical properties and the films are heat-sealable, which enable various new applications in the future.

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