Correlation of morphology and barrier properties of thin microwave plasma polymer films on metal substrate

Barranco, Violeta; Carpentier, Jean‐François; Grundmeier, Guido

doi:10.1016/j.electacta.2003.12.030

Cited by 55 publications

(44 citation statements)

References 38 publications

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“…Generally, conventional silicon nitride and silicon oxynitride films, obtained from inorganic precursors, are analyzed by dynamic SIMS to determine the N, O, and H concentration at interfaces [22][23][24]. Few studies have been published on the use of static SIMS to characterize films obtained from PECVD of organosilicon compounds, such as hexamethyldisiloxane (HMDSO) [25,26] or hexamethyldisilane (HMDS) [27,28]. These investigations are limited to highly organic films and mainly to qualitative purposes.…”

Section: Introductionmentioning

confidence: 99%

Silicon nitride and oxynitride films deposited from organosilicon plasmas: ToF–SIMS characterization with multivariate analysis

Piras

Mundo

Fracassi

et al. 2008

Surface and Coatings Technology

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Section: Introductionmentioning

confidence: 99%

Silicon nitride and oxynitride films deposited from organosilicon plasmas: ToF–SIMS characterization with multivariate analysis

Piras

Mundo

Fracassi

et al. 2008

Surface and Coatings Technology

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“…There is a possibility that substantial levels of moisture may accumulate at the film‐tablet interface, which would have adverse effects on moisture‐sensitive active ingredients. A number of studies, notably Fung and Parrot,22 Klages et al23 and Barranco et al,24 discuss the formation of this water layer at the film‐substrate boundary and correlate it with a reduction in film adhesion for paint‐based films. Okhamafe and York5 and Felton and McGinity6 who investigated the aging of hypromellose, PVA and methyacrylic polymers under elevated RH, attributed the loss of adhesion due to changes in molecular order and build up of internal stress within the coatings.…”

Section: Resultsmentioning

confidence: 99%

Moisture Sorption and Permeability Characteristics of Polymer Films: Implications for Their Use as Barrier Coatings for Solid Dosage Forms Containing Hydrolyzable Drug Substances

Mwesigwa

Basit

Buckton

2008

Journal of Pharmaceutical Sciences

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“…[30] Further, additional adhesion of the two components via polar interaction was reported in. [31] Similar investigations using plasma polymerisation were carried out concerning the deposition of cyclohexene/hexamethyldisilane on a zinc oxide surface. [32] The objective of the experiments performed in [32] was to produce a graded interfacial layer where one side promotes a strong bond between the polymer and the metal while the other side possesses optimum properties for the attachment of a polymer (organic coating).…”

Section: Methodsmentioning

confidence: 99%

Polymer/NiTi‐composites: Fundamental Aspects, Processing and Properties

et al. 2005

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have occurred as a result of a stress-induced displacive transformation. It was also demonstrated that this can only occur in nanocrystalline material, and the atomistic and thermodynamic aspects of the transformation were briefly considered. Finally, it may be noted that this displacive transformation process represents a new deformation mode that can be activated when alternative deformation mechanisms such as slip of lattice dislocations have become exhausted and the applied shear stress exceeds the local yield stress of the nanocrystalline state for this specific process. ExperimentalA carbon steel with a typical yield stress of 0.88 GPa containing approximately 0.8 wt. % C and 1.3 wt. % Mn with a well-defined pearlitic microstructure of alternating lamellae of bcc-Fe (ferrite) and Fe 3 C (cementite) in each grain was transformed into a fully nanocrystalline structure by High Pressure Torsion (HPT): disc-shaped samples with a diameter ranging from 10 ± 20 mm and a thickness of 0.2 ± 0.5 mm are placed between two anvils and subjected to 7 GPa pressure. The lower anvil is then rotated slowly (approx 1 rpm = 0.017 Hz) and frictional forces result in the shear straining of the sample as illustrated in Figure 1(a,b): this results in very high shear strains at relatively low strain rates. As our previous investigations showed, [16] the process of nanostructuring involves a sequence of stages such as the formation of cells and cell blocs, the increase of misorientations between cells, and finally formation of the nanostructure in the form of statistically oriented mosaic-nanocrystals. The microstructure of the specimens was characterised by transmission electron microscopy using both conventional bright-field and high-resolution transmission electron microscopy (HRTEM) imaging together with selected area diffraction using a FEI Tecnai F20 ST operated at 200 kV and an extraction voltage of 4.1 keV for the field emission gun (at FZ Karlsruhe) together with selected area diffraction using a FEI Tecnai T20 ST operated at 200 kV equipped with a Gatan Imaging Filter (at the University of Glasgow). The crystallography of crystallites and the interfaces between them was determined from fast Fourier transforms (FFTs) of different areas of the HRTEM images using the software package Digital Micrograph (Gatan Inc.).In the present study we present applied and basic work on composites which combine shape memory alloys and polymeric materials. This type of composites has received increasing attention in the last decade. The scientific literature data COMMUNICATIONS

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Correlation of morphology and barrier properties of thin microwave plasma polymer films on metal substrate

Cited by 55 publications

References 38 publications

Silicon nitride and oxynitride films deposited from organosilicon plasmas: ToF–SIMS characterization with multivariate analysis

Silicon nitride and oxynitride films deposited from organosilicon plasmas: ToF–SIMS characterization with multivariate analysis

Moisture Sorption and Permeability Characteristics of Polymer Films: Implications for Their Use as Barrier Coatings for Solid Dosage Forms Containing Hydrolyzable Drug Substances

Polymer/NiTi‐composites: Fundamental Aspects, Processing and Properties

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