scholarly journals The Structure of Incomplete Destructive Breakdown Spots in Thin Polymer Films

1974 ◽  
Vol 1 (1) ◽  
pp. 65-73 ◽  
Author(s):  
S. Sapieha ◽  
W. Jablonski ◽  
M. Kryszewski
Keyword(s):  
Energy Levels ◽  
Thin Layers ◽  
Channel Structure ◽  
Self Healing ◽  
Thin Polymer Films ◽  
Complete Destruction ◽  
Thin Polymer ◽  
Different Types ◽  
Non Destructive ◽  
Partial Destruction

Experimental observations are given on the structure of breakdown spots in thin layers of polystyrene and polybenzene obtained by a glow discharge technique. The levels of energy associated with different types of breakdown are identified and it is shown that within the range of breakdown energy level, lower than 10-5joules, non-destructive breakdown takes place. At higher energies, partial destruction of the breakdown channel occurs and with energy levels greater than 5 × 10-3joules, single hole, self-healing breakdown with complete destruction of the inner morphological channel structure occurs.The nature of the breakdown is discussed in electrical and electronmicroscopy terms.

On the interfacial chemistry of aryl diazonium compounds in polymer science

2012 ◽  
Vol 66 (5) ◽  
Author(s):  
Zakaria Salmi ◽  
Sarra Gam-Derouich ◽  
Samia Mahouche-Chergui ◽  
Mireille Turmine ◽  
Mohamed Chehimi
Keyword(s):  
Thin Layers ◽  
Polymer Science ◽  
Thin Polymer Films ◽  
Interfacial Chemistry ◽  
New Class ◽  
Thin Polymer ◽  
Grafting From ◽  
Physical And Chemical ◽  
Near Future

AbstractThis review emphasises the role of aryl diazonium compounds as a new class of coupling agents for grafting polymer thin layers onto carbon, diamond, metals, metal oxides, alloys, semi-conductors, ceramics, and polymers. Physical and chemical methods are first reported for anchoring aryl layers to the surfaces, then the review concentrates on the modification of the above substrates by thin polymer films via a range of the “grafting from” and “grafting onto” strategies. Some applications are described which highlight the important role that diazonium salts will continue to play in the near future in the polymer and surface sciences.

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

Surface Modification of Poly (alkyl/Arylphosphazene) Thin Films

2000 ◽  
Vol 629 ◽  
Author(s):  
John V. St. John ◽  
Patty Wisian-Neilson
Keyword(s):  
Thin Films ◽  
Surface Modification ◽  
Chemical Resistance ◽  
Chemical Properties ◽  
Inorganic Polymers ◽  
Thin Polymer Films ◽  
Hydrophilic Interactions ◽  
Carboxylic Acid Groups ◽  
Polymer Interface ◽  
Thin Polymer

ABSTRACTPoly (methylphenylphosphazene) (PMPP) is an example of a unique class of inorganic polymers with alternating – (P=N)– backbones. Chemical modification of bulk PMPP can result in changes of physical properties such as chemical resistance, onset temperature of thermal degradation, elasticity, and flexibility. Surface modification of PMPP allows tailoring of the chemical properties at the polymer interface while maintaining the integrity of the bulk polymer. In this research, PMPP thin films were treated to form carboxylate or carboxylic acid groups at the surface. Surface modification was monitored by following changes in contact angle. The hydrophobic/hydrophilic interactions of carboxylated PMPP surfaces allow for mesoscale interactions of thin polymer films.

Pattern Formation in Thin Polymer Films: A New Morphology

2000 ◽  
Vol 629 ◽  
Author(s):  
Jean-Loup Masson ◽  
Peter F. Green
Keyword(s):  
Growth Rate ◽  
Pattern Formation ◽  
Early Stage ◽  
Structural Evolution ◽  
Distinct Form ◽  
Thin Polymer Films ◽  
Intermediate Morphology ◽  
Thin Polymer ◽  
Nonwetting Liquid ◽  
Cylindrical Holes

ABSTRACTResearchers have shown that thin, nonwetting, liquid homopolymer films dewet substrates, forming patterns that reflect fluctuations in the local film thickness. These patterns have been shown to be either discrete cylindrical holes or bicontinuous “spinodal-like” patterns. In this paper we show the existence of a new morphology. During the early stage of dewetting, discrete highly asymmetric holes appear spontaneously throughout the film. The nucleation rate of these holes is faster than their growth rate. The morphology of the late stage of evolution, after 18 days, is characterized by a bicontinuous pattern, distinct form conventional spinodal dewetting patterns. This morphology has been observed for a range of film thicknesses between 7.5 and 21nm. The structural evolution of this intermediate morphology is discussed.

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

Spectroelectrochemical Identification of the Active Sites for Protons and Anions Insertions into Poly-(Azure A) Thin Polymer Films

2007 ◽  
Vol 111 (38) ◽  
pp. 14230-14237 ◽  
Author(s):  
J. Agrisuelas ◽  
C. Gabrielli ◽  
J. J. García-Jareño ◽  
D. Giménez-Romero ◽  
H. Perrot ◽  
...  
Keyword(s):  
Polymer Films ◽  
Active Sites ◽  
Thin Polymer Films ◽  
Azure A ◽  
Thin Polymer

scholarly journals Transmittances of thin polymer films and their suitability as a supportive substrate for a soft x-ray solar filter

1991 ◽  
Author(s):  
Memorie K. Williams ◽  
Evan Hansen ◽  
Arturo Reyes-Mena ◽  
David D. Allred
Keyword(s):  
Polymer Films ◽  
Thin Polymer Films ◽  
X Ray ◽  
Thin Polymer
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