P‐6.7: End‐Capped Transparent Polyimide Films with Improved Thermal Durability for Optoelectronic Application

2021 ◽  
Vol 52 (S2) ◽  
pp. 861-863
Author(s):  
Chang'ou Wang ◽  
Mengyan Gao ◽  
Yan Jia ◽  
Lei Zhai ◽  
Minhui He ◽  
...  
Keyword(s):  
Polyimide Films ◽  
Thermal Durability ◽  
Optoelectronic Application

Electron microscopy and diffraction studies of polyimides

1983 ◽  
Vol 41 ◽  
pp. 28-29
Author(s):  
O.C. de Hodgins ◽  
K. R. Lawless ◽  
R. Anderson
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Structural Features ◽  
Inert Atmosphere ◽  
Polyimide Films ◽  
Resolution Electron ◽  
The Matrix ◽  
High Resolution Electron Microscope ◽  
Diffraction Patterns ◽  
Polymeric Samples

Commercial polyimide films have shown to be homogeneous on a scale of 5 to 200 nm. The observation of Skybond (SKB) 705 and PI5878 was carried out by using a Philips 400, 120 KeV STEM. The objective was to elucidate the structural features of the polymeric samples. The specimens were spun and cured at stepped temperatures in an inert atmosphere and cooled slowly for eight hours. TEM micrographs showed heterogeneities (or nodular structures) generally on a scale of 100 nm for PI5878 and approximately 40 nm for SKB 705, present in large volume fractions of both specimens. See Figures 1 and 2. It is possible that the nodulus observed may be associated with surface effects and the structure of the polymers be regarded as random amorphous arrays. Diffraction patterns of the matrix and the nodular areas showed different amorphous ring patterns in both materials. The specimens were viewed in both bright and dark fields using a high resolution electron microscope which provided magnifications of 100,000X or more on the photographic plates if desired.

Polar Anchoring Properties of Photoalignment Polyimide Films

2019 ◽  
pp. 324
Author(s):  
Wei-Wei Chen ◽  
Jui-Wen Pan ◽  
Shie-Chang Jeng
Keyword(s):  
Polyimide Films

Influence of Nanosized Cerium Oxide on the Thermal Characteristics of Aromatic Polyimide Films

2020 ◽  
Vol 62 (2) ◽  
pp. 196-204
Author(s):  
I. V. Gofman ◽  
A. L. Nikolaeva ◽  
I. V. Abalov ◽  
E. M. Ivan’kova ◽  
I. V. Kuntzman ◽  
...  
Keyword(s):  
Cerium Oxide ◽  
Thermal Characteristics ◽  
Polyimide Films ◽  
Aromatic Polyimide

Influence of manufacturing techniques R-BAPB polyimide films on charge relaxation

2020 ◽  
Author(s):  
Almaz Kamalov ◽  
Margarita Borisova ◽  
Andrey Didenko ◽  
Gleb Vaganov ◽  
Vladimir Yudin
Keyword(s):  
Polyimide Films ◽  
Charge Relaxation ◽  
Manufacturing Techniques

Mechanochemical synthesis, linear and nonlinear optical properties of a new oligophenyleneimine with indole terminal moiety for optoelectronic application

2021 ◽  
Author(s):  
Francisco Germán Mejía-Hernández ◽  
Oscar Javier Hernández-Ortíz ◽  
Francisco Misael Muñoz-Pérez ◽  
Armando Irving Martínez-Pérez ◽  
Rosa Angeles Vázquez-García ◽  
...  
Keyword(s):  
Optical Properties ◽  
Mechanochemical Synthesis ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Optoelectronic Application ◽  
Linear And Nonlinear

scholarly journals An Assessment of Surface Treatments for Adhesion of Polyimide Thin Films

Polymers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1955
Author(s):  
Marco Cen-Puc ◽  
Andreas Schander ◽  
Minerva G. Vargas Gleason ◽  
Walter Lang
Keyword(s):  
Flexible Electronics ◽  
Oxygen Plasma ◽  
Reactive Ion Etching ◽  
Peel Test ◽  
Scratch Test ◽  
Peel Strength ◽  
Surface Treatments ◽  
Oxygen Plasma Treatment ◽  
Polyimide Films ◽  
Ion Etching

Polyimide films are currently of great interest for the development of flexible electronics and sensors. In order to ensure a proper integration with other materials and PI itself, some sort of surface modification is required. In this work, microwave oxygen plasma, reactive ion etching oxygen plasma, combination of KOH and HCl solutions, and polyethylenimine solution were used as surface treatments of PI films. Treatments were compared to find the best method to promote the adhesion between two polyimide films. The first selection of the treatment conditions for each method was based on changes in the contact angle with deionized water. Afterward, further qualitative (scratch test) and a quantitative adhesion assessment (peel test) were performed. Both scratch test and peel strength indicated that oxygen plasma treatment using reactive ion etching equipment is the most promising approach for promoting the adhesion between polyimide films.

Latent Patterned Surface Metallization of Silver Ion-Doped Polyimide Films

2009 ◽  
Vol 1192 ◽  
Author(s):  
Luke M. Davis ◽  
Tyler S. Stukenbroeker ◽  
Christopher J. Abelt ◽  
Joseph L. Scott ◽  
Evguenia Orlova ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Reducing Agents ◽  
Equimolar Amount ◽  
Silver Ion ◽  
Polyimide Films ◽  
Patterned Surface ◽  
Specular Reflectivity ◽  
Surface Metallization ◽  
Polycrystalline Silver

AbstractA straightforward ambient temperature route to the fabrication of surface silver-metallized polyimide films is described. Silver(I) trifluoromethane sulfonate and a polyimide, derived from 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) and an equimolar amount of 4,4'-oxydianiline (ODA) and 3,5-diaminobenzoic acid (DABA), were dissolved together in dimethylacetamide. Silver(I)-doped films were prepared at thicknesses of 25-50 microns and depleted of solvent by evaporation. The silver(I)-containing films were then treated with aqueous reducing agents, which brought forth silvered films exhibiting conductivity on the order of bulk polycrystalline silver and good specular reflectivity.

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