Antibacterial and barrier properties of oriented polymer films with ZnO thin films applied with atomic layer deposition at low temperatures

Vähä-Nissi, Mika; Pitkänen, Marja; Salo, Erkki; Kenttä, Eija; Tanskanen, Anne; Sajavaara, Timo; Putkonen, Matti; Sievänen, Jenni; Sneck, Asko; Rättö, Marjaana; Karppinen, Maarit; Harlin, Ali

doi:10.1016/j.tsf.2014.03.068

Cited by 52 publications

(47 citation statements)

References 41 publications

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“…The sharp ZnO/PS interface in the electron density profile suggests that for the ALD grown ZnO/PS sample, thin ZnO film (∼20 nm) was formed on ∼0.1 μm thick PS template without any reasonable diffusion at the interface. The growth rate calculated (0.2 Å/cycle) on PS substrate is less compared to that found during the previous studies of low‐temperature ALD of ZnO on bare Si substrate . The slow growth rate on PS substrate may be due to the limited adsorption of DEZ on PS.…”

Section: Resultscontrasting

confidence: 62%

“…[29,31] Inset of Figure 1 Note: Error bar in determination of film thicknesses from XRR is π/q max [49,50] [1,2], which is $1 nm (q max can be obtained from Figure 1a). [17,33] The slow growth rate on PS substrate may be due to the limited adsorption of DEZ on PS. Figure 2 shows representative X-ray diffraction (XRD) patterns of ZnO/PS.…”

Section: Thickness Electron Density Profile and Surface-interface Rmentioning

confidence: 99%

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ALD Grown ZnO on Polymeric Template

Mathur

Pal

Chattopadhyay

2017

Macromolecular Symposia

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ZnO thin film was grown on polystyrene template using atomic layer deposition (ALD) technique. The synthesized thin film was characterized using X‐ray reflectivity, X‐ray diffraction, and photoluminescence. X‐ray reflectivity confirms the growth of ZnO thin film with bulklike electron density, on top of polystyrene film without causing any perturbation in the underneath polymeric template. The X‐ray diffraction result reveals the crystalline structure of the ALD grown ZnO. Photoluminescence (PL) study of ZnO thin film on polymeric template shows the presence of strong characteristic near band edge emission (NBE) in the UV range along with a defect related deep level emission (DLE) in the visible region. The results confirm the growth of good quality crystalline ZnO thin film on polymeric template maintaining a sharp interface in metal‐oxide/polymer hybrid structure.

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Section: Resultscontrasting

confidence: 62%

Section: Thickness Electron Density Profile and Surface-interface Rmentioning

confidence: 99%

ALD Grown ZnO on Polymeric Template

Mathur

Pal

Chattopadhyay

2017

Macromolecular Symposia

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“…Constructuction of SiO2/Al2O3 multilayers on Si-substrate applications, its deterioration over high humidities limits usefulness without protective layers, such as other ALD oxides, namely SiO2 [27] or TiO2 [28]. layers had averaged thickness of 3.7 nm and 2.6 nm, respectively.…”

Section: Resultsmentioning

confidence: 99%

Low-temperature atomic layer deposition of SiO ₂ /Al ₂ O ₃ multilayer structures constructed on self-standing films of cellulose nanofibrils

Putkonen

Sippola

Svärd

et al. 2017

Phil. Trans. R. Soc. A.

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In this paper, we have optimized a low-temperature atomic layer deposition (ALD) of SiO 2 using AP-LTO® 330 and ozone (O 3 ) as precursors, and demonstrated its suitability to surface-modify temperature-sensitive bio-based films of cellulose nanofibrils (CNFs). The lowest temperature for the thermal ALD process was 80°C when the silicon precursor residence time was increased by the stop-flow mode. The SiO 2 film deposition rate was dependent on the temperature varying within 1.5–2.2 Å cycle −1 in the temperature range of 80–350°C, respectively. The low-temperature SiO 2 process that resulted was combined with the conventional trimethyl aluminium + H 2 O process in order to prepare thin multilayer nanolaminates on self-standing CNF films. One to six stacks of SiO 2 /Al 2 O 3 were deposited on the CNF films, with individual layer thicknesses of 3.7 nm and 2.6 nm, respectively, combined with a 5 nm protective SiO 2 layer as the top layer. The performance of the multilayer hybrid nanolaminate structures was evaluated with respect to the oxygen and water vapour transmission rates. Six stacks of SiO 2 /Al 2 O with a total thickness of approximately 35 nm efficiently prevented oxygen and water molecules from interacting with the CNF film. The oxygen transmission rates analysed at 80% RH decreased from the value for plain CNF film of 130 ml m −2 d −1 to 0.15 ml m −2 d −1 , whereas the water transmission rates lowered from 630 ± 50 g m −2 d −1 down to 90 ± 40 g m −2 d −1 . This article is part of a discussion meeting issue ‘New horizons for cellulose nanotechnology’.

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“…Vähä‐Nissi et al. (2014) studied the deposition of ZnO on to biaxially oriented PLA and PP films using the ALD technique and explained improved barrier and antibacterial properties (Figure 6). However, inorganic metal oxide coatings of tens of nanometer thickness are subjected to mechanical stresses, and therefore, require a tailored organic/inorganic protective layer of polymer that can be applied in a successive extrusion‐based coating process (Vartiainen et al., 2016).…”

Section: Multilayer Film Preparation Techniquesmentioning

confidence: 99%

“… Illustration of inhibition zones around BOPLA samples with 50 nm ZnO deposited at 70 °C with DEZ/water with (a, c) and without (b,d) UV posttreatment for Aspergillus niger (a,b) and Bacillus subtilis (c,d), respectively (Source: Vähä‐Nissi et al., 2014) …”

Section: Multilayer Film Preparation Techniquesmentioning

confidence: 99%

Multilayer packaging: Advances in preparation techniques and emerging food applications

Anukiruthika

Sethupathy

Wilson

et al. 2020

Comp Rev Food Sci Food Safe

182

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In recent years, with advantages of versatility, functionality, and convenience, multilayer food packaging has gained significant interest. As a single entity, multilayer packaging combines the benefits of each monolayer in terms of enhanced barrier properties, mechanical integrity, and functional properties. Of late, apart from conventional approaches such as coextrusion and lamination, concepts of nanotechnology have been used in the preparation of composite multilayer films with improved physical, chemical, and functional characteristics. Further, emerging techniques such as ultraviolet and cold plasma treatments have been used in manufacturing films with enhanced performance through surface modifications. This work provides an up-to-date review on advancements in the preparation of multilayer films for food packaging applications. This includes critical considerations in design, risk of interaction between the package and the food, mathematical modeling and simulation, potential for scale-up, and costs involved. The impact of in-package processing is also explained considering cases of nonthermal processing and advanced thermal processing. Importantly, challenges associated with degradability and recycling multilayer packages and associated implications on sustainability have been discussed. K E Y W O R D Sbiodegradability, improved film characteristics, multilayer packaging, nanotechnology, sustainability, recycling

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Antibacterial and barrier properties of oriented polymer films with ZnO thin films applied with atomic layer deposition at low temperatures

Cited by 52 publications

References 41 publications

ALD Grown ZnO on Polymeric Template

ALD Grown ZnO on Polymeric Template

Low-temperature atomic layer deposition of SiO ₂ /Al ₂ O ₃ multilayer structures constructed on self-standing films of cellulose nanofibrils

Multilayer packaging: Advances in preparation techniques and emerging food applications

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Antibacterial and barrier properties of oriented polymer films with ZnO thin films applied with atomic layer deposition at low temperatures

Cited by 52 publications

References 41 publications

ALD Grown ZnO on Polymeric Template

ALD Grown ZnO on Polymeric Template

Low-temperature atomic layer deposition of SiO 2 /Al 2 O 3 multilayer structures constructed on self-standing films of cellulose nanofibrils

Multilayer packaging: Advances in preparation techniques and emerging food applications

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Low-temperature atomic layer deposition of SiO ₂ /Al ₂ O ₃ multilayer structures constructed on self-standing films of cellulose nanofibrils