Lattice Orientations of Evaporated Metals onto Uniaxially Oriented, Semicrystalline, Ultra thin Polymer Films

1992 ◽  
Vol 280 ◽  
Author(s):  
Klaus D. Jandt ◽  
Maren Buhk ◽  
Jürgen Petermann ◽  
Lukas M. Eng ◽  
Harald Fuchs
Keyword(s):  
Polymer Films ◽  
Bulk Material ◽  
Polymer Surface ◽  
Scanning Force Microscopy ◽  
Thin Polymer Films ◽  
Surface Steps ◽  
Thin Polymer ◽  
Polymer Metal ◽  
Scanning Force ◽  
Layer I

ABSTRACTThe textured oriented overgrowth (epitaxy) of certain metals evaporated onto substrates consisting of highly oriented ultra thin polymer films of polyethylene (PE), polypropylene (PP) and polybutene-1 (PB-1) has been well known since a few years. However, the origin of the observed epitaxy is not clear at all: graphoepitaxy (i. e. orientation induced by nucleation onto oriented topographic features of the substrate), the formation of a chemical layer (i. e. of metal-methyl groups building up the polymer-metal interface, or simply classic epitaxy (i.e. lattice matching) seem all to be possible explanations for the observed orientations. Here, we used Transmission Electron Microscopy (TEM) and Scanning Force Microscopy (SFM) to investigate the possibility of graphoepitaxial growth on polymeric surfaces. Our investigations show that the morphology of polymeric bulk material determine the topographic properties observed at the polymer surface. The semicrystalline nature of the polymer films leads to polymeric surface steps which are suitable as locations for graphoepitaxial growth. Artificial epitaxy (graphoepitaxy) seems to be the most likely orientation mechanism.

The Mechanical Properties of Thin Polymer Films from Nanoindentation

2004 ◽  
Vol 851 ◽  
Author(s):  
F R Jones ◽  
S A Hayes
Keyword(s):  
Polymer Films ◽  
Bulk Material ◽  
Fibre Composite ◽  
Polymeric Materials ◽  
Thermomechanical Properties ◽  
Full Description ◽  
Thin Polymer Films ◽  
Thin Polymer ◽  
Static Indentation ◽  
Space Environments

ABSTRACTThe thermomechanical properties of thermoset polymeric materials are shown to be suitable for detecting relevant degradative processes in the matrix of a fibre composite. In space environments, the surface of the material will be modified first because of the diffusion of the active molecules. Nanoindentation has been shown to be capable of determining changes in viscoelastic properties of thin polymer films and at surfaces of bulk material. The Hysitron Triboscope has been used to characterise an epoxy resin and polycyanurate in dynamic and static scanning modes. Dynamic nanoindentation has been shown to provide a full description of the viscoelastic response. Progress has been made in analysing static indentation for time dependence.

Temperature dependent nano indentation of thin polymer films with the scanning force microscope

2004 ◽  
Vol 40 (5) ◽  
pp. 957-964 ◽  
Author(s):  
M. Hinz ◽  
A. Kleiner ◽  
S. Hild ◽  
O. Marti ◽  
U. Dürig ◽  
...  
Keyword(s):  
Polymer Films ◽  
Thin Polymer Films ◽  
Temperature Dependent ◽  
Scanning Force Microscope ◽  
Nano Indentation ◽  
Thin Polymer ◽  
Scanning Force

scholarly journals Investigation of Roughness Correlation in Polymer Brushes via X-ray Scattering

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2101
Author(s):  
Marcus Hildebrandt ◽  
Eui-young Shin ◽  
Suan Yang ◽  
Wael Ali ◽  
Sedakat Altinpinar ◽  
...  
Keyword(s):  
Polymer Films ◽  
Polymer Brushes ◽  
Substrate Surface ◽  
Polymer Surface ◽  
Intrinsic Property ◽  
Polymer Chains ◽  
Thin Polymer Films ◽  
Solvent Vapor ◽  
X Ray Scattering ◽  
Thin Polymer

Thin polymer films and coatings are used to tailor the properties of surfaces in various applications such as protection against corrosion, biochemical functionalities or electronic resistors. Polymer brushes are a certain kind of thin polymer films, where polymer chains are covalently grafted to a substrate and straighten up to form a brush structure. Here we report on differences and similarities between polymer brushes and spin-coated polymer films from polystyrene and polymethyl methacrylate with special emphasis on surface roughness and roughness correlation. The phenomenon of roughness correlation or conformality describes the replication of the roughness profile from the substrate surface to the polymer surface. It is of high interest for polymer physics of brush layers as well as applications, in which a homogeneous polymer layer thickness is required. We demonstrate that spin-coated films as well as polymer brushes show roughness correlation, but in contrast to spin-coated films, the correlation in brushes is stable to solvent vapor annealing. Roughness correlation is therefore an intrinsic property of polymer brushes.

Is the chain dynamics in thin polymer films isotropic ?

2000 ◽  
Vol 10 (PR7) ◽  
pp. Pr7-233-Pr7-237 ◽  
Author(s):  
S. Rivillon ◽  
P. Auroy ◽  
B. Deloche
Keyword(s):  
Polymer Films ◽  
Thin Polymer Films ◽  
Chain Dynamics ◽  
Thin Polymer

Reducing the сontact angle hysteresis of thin polymer films by oil impregnation in supercritical carbon dioxide

2021 ◽  
Vol 154 ◽  
pp. 106202
Author(s):  
Polina S. Kazaryan ◽  
Maria A. Agalakova ◽  
Elena P. Kharitonova ◽  
Marat O. Gallyamov ◽  
Mikhail S. Kondratenko
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Polymer Films ◽  
Thin Polymer Films ◽  
Thin Polymer ◽  
Oil Impregnation ◽  
Supercritical Carbon
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