Hydrophobization and smoothing of cellulose nanofibril films by cellulose ester coatings

Pia Willberg-Keyriläinen; Jari Vartiainen; Jani Pelto; Jarmo Ropponen

doi:10.1016/j.carbpol.2017.04.082

Hydrophobization and smoothing of cellulose nanofibril films by cellulose ester coatings

Pia Willberg-Keyriläinen, Jari Vartiainen, Jani Pelto, Jarmo Ropponen

Research output: Contribution to journal › Article › Scientific › peer-review

37 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 language	English
Pages (from-to)	160-165
Journal	Carbohydrate Polymers
Volume	170
DOIs	https://doi.org/10.1016/j.carbpol.2017.04.082
Publication status	Published - 15 Aug 2017
MoE publication type	A1 Journal article-refereed

Keywords

cellulose nanofibrils
CNF
long chain cellulose esters
mulktilayer films
barrier

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10.1016/j.carbpol.2017.04.082

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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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AU - Willberg-Keyriläinen, Pia

AU - Vartiainen, Jari

AU - Pelto, Jani

AU - Ropponen, Jarmo

PY - 2017/8/15

Y1 - 2017/8/15

N2 - 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.

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.

KW - cellulose nanofibrils

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KW - long chain cellulose esters

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Hydrophobization and smoothing of cellulose nanofibril films by cellulose ester coatings

Abstract

Keywords

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