Diamond-like carbon coating of a pure bioplastic foil

Rohrbeck, Magdalena; Körsten, Susanne; Fischer, Christian B.; Wehner, Stefan; Keßler, Barbara

doi:10.1016/j.tsf.2013.07.028

Cited by 30 publications

(35 citation statements)

References 23 publications

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“…The chosen pure bioplastic foil is a composition of 92 % polyhydroxybutyrate (PHB) and 8 % polyhydroxyvalerate (PHV) with a thickness of 50 μm (PHB92/PHV8 biopolymer film, Goodfellow BV301050, already used in [16]). Sheets of the size 100 mm × 255 mm were cut out of the delivered foil.…”

Section: Methodsmentioning

confidence: 99%

“…The coating process was performed as described previously [15,16,[18][19][20][21]. In difference to the setup used in [15,16], here six of the trays at a time were placed onto a turntable in a high vacuum chamber. The trays rotated at 2 rpm about a vertical axis in the center of the chamber during the coating process.…”

Section: Methodsmentioning

confidence: 99%

“…The trays rotated at 2 rpm about a vertical axis in the center of the chamber during the coating process. As in the case of the process used in [15,16], remaining surface contaminations were removed in a first step by exposure to oxygen plasma for 10 min at about 1 Pa pressure and 200 W RF irradiation power. Then the pure bioplastic foil was exposed to acetylene plasma at 0.65 Pa and 107 W resulting in a deposition rate of 2 nm/min for the used setup.…”

Section: Methodsmentioning

confidence: 99%

“…Generally, additional applications of plastic materials can be achieved through the coating of the surface with diamond-like carbon (DLC) [13][14][15][16]. DLC is a disordered network of sp 2 -and sp 3 -hybridized carbon atoms as well as hydrogen.…”

Section: Dlc-beschichtetementioning

confidence: 99%

“…It was recently shown that this pure bioplastic foil can be coated with DLC up to 450 nm thickness [16].…”

Section: Dlc-beschichtetementioning

confidence: 99%

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DLC‐coated pure bioplastic foil

Rohrbeck¹,

Fischer²,

Wehner

et al. 2014

Vak Forsch Prax

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Polymers made of renewable resources increasingly replace conventional plastic materials made of petroleum. Socalled bioplastics can be found e. g. in food industry, for agricultural usage or in the medical field. The range of applications can be further expanded with specialized coating of their surface. Especially in case of food packaging and the usage within medical devices as well as the storage of these composite materials, sterilization or at least the partial reduction of microbial growth is an important issue which needs to be addressed early in the production process. In this work, a commercially available polyhydroxyalkanoate (PHA) pure bioplastic foil of 50 μm thickness was coated with 100 nm of diamond‐like carbon (DLC) and afterwards treated by four different standard methods of sterilization and / or disinfection, namely deep‐freezing, ultraviolet irradiation, autoclaving and immersion in ethanol. The surface morphology of treated DLC‐coated and uncoated samples was investigated and compared to the untreated DLC‐coated and uncoated samples using scanning electron microscopy (SEM) and atomic force microscopy (AFM). Measurements exhibited damage of the composite for autoclaved and in ethanol immersed samples, whereas deep‐frozen and ultraviolet irradiated samples showed no structural changes. These findings clearly demonstrate deep‐freezing and ultraviolet irradiation to be appropriate methods for the disinfection and sterilization, respectively, of the DLC‐coated pure bioplastic foil.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Dlc-beschichtetementioning

confidence: 99%

“…It was recently shown that this pure bioplastic foil can be coated with DLC up to 450 nm thickness [16].…”

Section: Dlc-beschichtetementioning

confidence: 99%

See 3 more Smart Citations

DLC‐coated pure bioplastic foil

Rohrbeck¹,

Fischer²,

Wehner

et al. 2014

Vak Forsch Prax

Self Cite

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Inorganic Thin Film Deposition and Application on Organic Polymer Substrates

et al. 2017

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This review details the emerging area of inorganic thin film coatings on polymer substrates, from examples of applications through to the fabrication processes and the underlying growth mechanism(s). Of particular focus is the use of physical vapor deposition to deposit thin metal and/or metal oxide films onto polymeric materials. This primary focus highlights an area of research, that is, gaining in popularity, as researchers attempt to provide insight into the adaption of a well-established manufacturing process to be compatible with the ever expanding range of polymer substrates. The motivation for doing so comes from the evolution of existing industry (i.e., the semi-conductor sector) to fabricate new devices (i.e., flexible electronics). In addition, the research challenges faced in achieving evaporated and sputtered thin film coatings on polymeric substrates, such as mechanical and thermal considerations will be discussed. a) Metals do not display a glass transition temperature; b) amorphous polymers that do not display crystallite melting; c) semicrystalline polymers.Figure 1 5. Possible mechanisms for the nucleation and growth of sputtered nanoparticles into IL substrate. Reproduced with permission from ref.[104]

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Attaching Photochemically Active Ruthenium Polypyridyl Complex Units to Amorphous Hydrogenated Carbon (a‐C:H) Layers

Schink

Catena

Heintz

et al. 2018

Adv Materials Inter

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Amorphous hydrogenated carbon (a-C:H) films are applied 500 nm thick on Si(100) via plasma-enhanced chemical vapor deposition (PECVD) using ethyne. Present plasma conditions enrich the sp 2 -content especially toward the outermost a-C:H layers, which in turn are used to attach a photoactive Ru-polypyridyl complex to the surface. An azo-bridged dinuclear Ru-polypyridyl complex is optimized in synthesis and the final mononuclear fragment attached on a-C:H photochemically under UV-irradiation with concomitant N 2 release. The Ru-polypyridyl complex is characterized by MS, NMR, IR, UV/vis, fluorescence spectroscopy, and time-dependent density functional theory (DFT) calculations. Crystallographic data for the intermediate 4-nitro-2-(pyridin-2-yl)pyridine 1-oxide as essential precursor are established. Morphological characteristics of the a-C:H @ Si and final Ru(complex) @ a-C:H @ Si combinations are determined by atomic force microscopy (AFM) revealing individual grain-like structures. The presence of Ru on the a-C:H @ Si surface is initially verified qualitatively by laser-induced breakdown spectroscopy (LIBS) and by inductively coupled plasma-sector field mass spectrometry (ICP-SF-MS) after chemical digestion. With laser ablation-ICP-MS mapping, full Ru coverage is proven, also revealing inhomogeneities in terms of "Ru hot spots". The current investigation proves the successful attachment of a Ru-complex on a-C:H and indicates a starting point for the development of further material combinations for feasible sunlight to energy conversions. Surface FunctionalizationThe ORCID identification number(s) for the author(s) of this article can be found under https://doi.

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Diamond-like carbon coating of a pure bioplastic foil

Cited by 30 publications

References 23 publications

DLC‐coated pure bioplastic foil

DLC‐coated pure bioplastic foil

Inorganic Thin Film Deposition and Application on Organic Polymer Substrates

Attaching Photochemically Active Ruthenium Polypyridyl Complex Units to Amorphous Hydrogenated Carbon (a‐C:H) Layers

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