Bio-hybrid nanocomposite coatings from sonicated chitosan and nanoclay

Jari Vartiainen (Corresponding Author), Mikko Tuominen, Kalle Nättinen

Research output: Contribution to journalArticleScientificpeer-review

41 Citations (Scopus)

Abstract

Nanocomposite films and coatings with improved properties were produced from ultrasonic dispersed chitosan and hydrophilic bentonite nanoclay. Bio‐hybrid coatings were applied onto argon–plasma‐activated LDPE coated paper. The intercalation of chitosan in the silicate layers was confirmed by the decrease of diffraction angles as the chitosan/nanoclay ratio increased. Nanocomposite films and multilayer coatings had improved barrier properties against oxygen, water vapor, grease, and UV‐light transmission. Oxygen transmission was significantly reduced under all humidity conditions. In dry conditions, over 99% reduction and at 80% relative humidity almost 75% reduction in oxygen transmission rates was obtained. Hydrophilic chitosan was lacking the capability of preventing water vapor transmission, thus total barrier effect of nanoclay containing films was not more than 15% as compared with pure chitosan. Because to very thin coatings (≤1 μm), nanoclay containing chitosan did not have antimicrobial activity against test strains. All coating raw materials were “generally recognized as safe” (GRAS) and the calculated total migration was in all cases ≤6 mg/dm2, thus the coatings met the requirements set by the packaging legislation. Processing of the developed bio‐hybrid nanocomposite coated materials was safe as the amounts of released particles under rubbing conditions were comparable with the particle concentrations in a normal office environment.
Original languageEnglish
Pages (from-to)3638 - 3647
Number of pages10
JournalJournal of Applied Polymer Science
Volume116
Issue number6
DOIs
Publication statusPublished - 2010
MoE publication typeA1 Journal article-refereed

Fingerprint

Chitosan
Nanocomposites
Coatings
Nanocomposite films
Steam
Oxygen
Water vapor
Atmospheric humidity
Bentonite
Coated materials
Silicates
Lubricating greases
Low density polyethylenes
Polyethylene
Intercalation
Packaging
Raw materials
Multilayers
Diffraction
Ultrasonics

Keywords

  • nanocomposites
  • barrier
  • biopolymers
  • clay
  • coatings

Cite this

Vartiainen, Jari ; Tuominen, Mikko ; Nättinen, Kalle. / Bio-hybrid nanocomposite coatings from sonicated chitosan and nanoclay. In: Journal of Applied Polymer Science. 2010 ; Vol. 116, No. 6. pp. 3638 - 3647.
@article{13f3994e591c4e7da6efc4a1cfd9e088,
title = "Bio-hybrid nanocomposite coatings from sonicated chitosan and nanoclay",
abstract = "Nanocomposite films and coatings with improved properties were produced from ultrasonic dispersed chitosan and hydrophilic bentonite nanoclay. Bio‐hybrid coatings were applied onto argon–plasma‐activated LDPE coated paper. The intercalation of chitosan in the silicate layers was confirmed by the decrease of diffraction angles as the chitosan/nanoclay ratio increased. Nanocomposite films and multilayer coatings had improved barrier properties against oxygen, water vapor, grease, and UV‐light transmission. Oxygen transmission was significantly reduced under all humidity conditions. In dry conditions, over 99{\%} reduction and at 80{\%} relative humidity almost 75{\%} reduction in oxygen transmission rates was obtained. Hydrophilic chitosan was lacking the capability of preventing water vapor transmission, thus total barrier effect of nanoclay containing films was not more than 15{\%} as compared with pure chitosan. Because to very thin coatings (≤1 μm), nanoclay containing chitosan did not have antimicrobial activity against test strains. All coating raw materials were “generally recognized as safe” (GRAS) and the calculated total migration was in all cases ≤6 mg/dm2, thus the coatings met the requirements set by the packaging legislation. Processing of the developed bio‐hybrid nanocomposite coated materials was safe as the amounts of released particles under rubbing conditions were comparable with the particle concentrations in a normal office environment.",
keywords = "nanocomposites, barrier, biopolymers, clay, coatings",
author = "Jari Vartiainen and Mikko Tuominen and Kalle N{\"a}ttinen",
year = "2010",
doi = "10.1002/app.31922",
language = "English",
volume = "116",
pages = "3638 -- 3647",
journal = "Journal of Applied Polymer Science",
issn = "0021-8995",
publisher = "Wiley",
number = "6",

}

Bio-hybrid nanocomposite coatings from sonicated chitosan and nanoclay. / Vartiainen, Jari (Corresponding Author); Tuominen, Mikko; Nättinen, Kalle.

In: Journal of Applied Polymer Science, Vol. 116, No. 6, 2010, p. 3638 - 3647.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Bio-hybrid nanocomposite coatings from sonicated chitosan and nanoclay

AU - Vartiainen, Jari

AU - Tuominen, Mikko

AU - Nättinen, Kalle

PY - 2010

Y1 - 2010

N2 - Nanocomposite films and coatings with improved properties were produced from ultrasonic dispersed chitosan and hydrophilic bentonite nanoclay. Bio‐hybrid coatings were applied onto argon–plasma‐activated LDPE coated paper. The intercalation of chitosan in the silicate layers was confirmed by the decrease of diffraction angles as the chitosan/nanoclay ratio increased. Nanocomposite films and multilayer coatings had improved barrier properties against oxygen, water vapor, grease, and UV‐light transmission. Oxygen transmission was significantly reduced under all humidity conditions. In dry conditions, over 99% reduction and at 80% relative humidity almost 75% reduction in oxygen transmission rates was obtained. Hydrophilic chitosan was lacking the capability of preventing water vapor transmission, thus total barrier effect of nanoclay containing films was not more than 15% as compared with pure chitosan. Because to very thin coatings (≤1 μm), nanoclay containing chitosan did not have antimicrobial activity against test strains. All coating raw materials were “generally recognized as safe” (GRAS) and the calculated total migration was in all cases ≤6 mg/dm2, thus the coatings met the requirements set by the packaging legislation. Processing of the developed bio‐hybrid nanocomposite coated materials was safe as the amounts of released particles under rubbing conditions were comparable with the particle concentrations in a normal office environment.

AB - Nanocomposite films and coatings with improved properties were produced from ultrasonic dispersed chitosan and hydrophilic bentonite nanoclay. Bio‐hybrid coatings were applied onto argon–plasma‐activated LDPE coated paper. The intercalation of chitosan in the silicate layers was confirmed by the decrease of diffraction angles as the chitosan/nanoclay ratio increased. Nanocomposite films and multilayer coatings had improved barrier properties against oxygen, water vapor, grease, and UV‐light transmission. Oxygen transmission was significantly reduced under all humidity conditions. In dry conditions, over 99% reduction and at 80% relative humidity almost 75% reduction in oxygen transmission rates was obtained. Hydrophilic chitosan was lacking the capability of preventing water vapor transmission, thus total barrier effect of nanoclay containing films was not more than 15% as compared with pure chitosan. Because to very thin coatings (≤1 μm), nanoclay containing chitosan did not have antimicrobial activity against test strains. All coating raw materials were “generally recognized as safe” (GRAS) and the calculated total migration was in all cases ≤6 mg/dm2, thus the coatings met the requirements set by the packaging legislation. Processing of the developed bio‐hybrid nanocomposite coated materials was safe as the amounts of released particles under rubbing conditions were comparable with the particle concentrations in a normal office environment.

KW - nanocomposites

KW - barrier

KW - biopolymers

KW - clay

KW - coatings

U2 - 10.1002/app.31922

DO - 10.1002/app.31922

M3 - Article

VL - 116

SP - 3638

EP - 3647

JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

SN - 0021-8995

IS - 6

ER -