Barrier properties of Al2O3 and alucone coatings and nanolaminates on flexible biopolymer films

Mika Vähä-Nissi; Pia Sundberg; Emilia Kauppi; Terhi Hirvikorpi; Jenni Sievänen; Anjali Sood; Maarit Karppinen; Ali Harlin

doi:10.1016/j.tsf.2012.07.025

Barrier properties of Al₂O₃ and alucone coatings and nanolaminates on flexible biopolymer films

Mika Vähä-Nissi^*, Pia Sundberg^*, Emilia Kauppi^*, Terhi Hirvikorpi, Jenni Sievänen, Anjali Sood, Maarit Karppinen, Ali Harlin

^*Corresponding author for this work

Aalto University

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

74 Citations (Scopus)

Abstract

Thin atomic layer deposited (ALD) Al₂O₃ coatings are efficient barriers against gases and vapors. Al₂O₃ coatings are, however, brittle and straining them generates defects that impair barrier properties. Flexibility of ALD-grown Al₂O₃ coatings on biopolymer substrates can be improved by separating thinner Al₂O₃ layers with inorganic-organic alucone layers. The number and size of defects were smaller for these nanolaminates compared to the thick Al₂O₃ films after straining, and hence straining deteriorated the oxygen barrier properties less when applied to the laminates than when applied to the Al₂O₃ coatings.

Original language	English
Pages (from-to)	6780-6785
Journal	Thin Solid Films
Volume	520
Issue number	22
DOIs	https://doi.org/10.1016/j.tsf.2012.07.025
Publication status	Published - 2012
MoE publication type	A1 Journal article-refereed

Keywords

Alucone
barrier
hybrid
laminate
straining
thin film

Access to Document

10.1016/j.tsf.2012.07.025

Cite this

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title = "Barrier properties of Al2O3 and alucone coatings and nanolaminates on flexible biopolymer films",

abstract = "Thin atomic layer deposited (ALD) Al2O3 coatings are efficient barriers against gases and vapors. Al2O3 coatings are, however, brittle and straining them generates defects that impair barrier properties. Flexibility of ALD-grown Al2O3 coatings on biopolymer substrates can be improved by separating thinner Al2O3 layers with inorganic-organic alucone layers. The number and size of defects were smaller for these nanolaminates compared to the thick Al2O3 films after straining, and hence straining deteriorated the oxygen barrier properties less when applied to the laminates than when applied to the Al2O3 coatings.",

keywords = "Alucone, barrier, hybrid, laminate, straining, thin film",

author = "Mika V{\"a}h{\"a}-Nissi and Pia Sundberg and Emilia Kauppi and Terhi Hirvikorpi and Jenni Siev{\"a}nen and Anjali Sood and Maarit Karppinen and Ali Harlin",

note = "Project code: 70962",

year = "2012",

doi = "10.1016/j.tsf.2012.07.025",

language = "English",

volume = "520",

pages = "6780--6785",

journal = "Thin Solid Films",

issn = "0040-6090",

publisher = "Elsevier",

number = "22",

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TY - JOUR

T1 - Barrier properties of Al2O3 and alucone coatings and nanolaminates on flexible biopolymer films

AU - Vähä-Nissi, Mika

AU - Sundberg, Pia

AU - Kauppi, Emilia

AU - Hirvikorpi, Terhi

AU - Sievänen, Jenni

AU - Sood, Anjali

AU - Karppinen, Maarit

AU - Harlin, Ali

N1 - Project code: 70962

PY - 2012

Y1 - 2012

N2 - Thin atomic layer deposited (ALD) Al2O3 coatings are efficient barriers against gases and vapors. Al2O3 coatings are, however, brittle and straining them generates defects that impair barrier properties. Flexibility of ALD-grown Al2O3 coatings on biopolymer substrates can be improved by separating thinner Al2O3 layers with inorganic-organic alucone layers. The number and size of defects were smaller for these nanolaminates compared to the thick Al2O3 films after straining, and hence straining deteriorated the oxygen barrier properties less when applied to the laminates than when applied to the Al2O3 coatings.

AB - Thin atomic layer deposited (ALD) Al2O3 coatings are efficient barriers against gases and vapors. Al2O3 coatings are, however, brittle and straining them generates defects that impair barrier properties. Flexibility of ALD-grown Al2O3 coatings on biopolymer substrates can be improved by separating thinner Al2O3 layers with inorganic-organic alucone layers. The number and size of defects were smaller for these nanolaminates compared to the thick Al2O3 films after straining, and hence straining deteriorated the oxygen barrier properties less when applied to the laminates than when applied to the Al2O3 coatings.

KW - Alucone

KW - barrier

KW - hybrid

KW - laminate

KW - straining

KW - thin film

U2 - 10.1016/j.tsf.2012.07.025

DO - 10.1016/j.tsf.2012.07.025

M3 - Article

SN - 0040-6090

VL - 520

SP - 6780

EP - 6785

JO - Thin Solid Films

JF - Thin Solid Films

IS - 22