Results 11 to 20 of about 38,523 (307)

Electrical conduction of polyimide films prepared from polyamic acid (PAA) and pre-imidized polyimide (PI) solution

open access: yeseXPRESS Polymer Letters, 2007
Electrical conduction characteristics in two different polyimide films prepared by the imidization of polyamic acid (PAA) and pre-imidized polyimide (PI) solution were investigated.
doaj   +2 more sources

Aluminium/polyimide adhesion

open access: yesActa Metallurgica et Materialia, 1993
AbstractWe present a theoretical study of the interactions between isolated aluminium atoms and a polyimide surface and between polyimide and aluminium surface. The effect of surface modification on adhesion is also discussed. Self-consistent geometry optimization and molecular orbital calculations have been carried out within CNDO approximation in a ...
Ramos, MMD, Stoneham, AM, Sutton, AP
openaire   +4 more sources

Novel Polymer Composites on the Basis of Arylalicyclic Polyimide Blends. I. Polyimide/Polycarbonate & Polyimide/Polysulphone Blends

open access: yesEurasian Chemico-Technological Journal, 2004
The new composite materials based on dianhydride of tricyclodecentetracarbon acid and oxydianiline with two other thermally stable polymers, such as polycarbonate and polysulphone, are being reported.
Saule Kudaikulova   +6 more
doaj   +3 more sources

Detection of Surface Modification of Polyimide Containing Steroidal Structure as a Function of Storage Time Using Second-Order Nonlinear Optical Spectroscopy [PDF]

open access: yes, 2023
The modification of a polyimide surface containing a 30% fraction of steroidal structure was studied as a function of storage time by vibrational sum frequency generation (SFG) spectroscopy and optical second-harmonic generation (SHG).
Goro Mizutani   +7 more
core   +1 more source

Space Charge Dynamics in Polyimide Based Nanocomposites [PDF]

open access: yes, 2010
Polymer nanocomposites have attracted wide interest as a method of enhancing polymer properties and extending their applications. In polymer nanocomposites, chemically dissimilar components are combined at the nanometer scale, and stronger interactions ...
Junwei Zha   +5 more
core   +1 more source

Hydrogen storage properties of Mg-based multilayer films

open access: yesMechanical Engineering Journal, 2016
In this study, four multilayer film samples of polyimide/Mg, polyimide/Mg/Ti, polyimide/Mg/Pd, and polyimide/Mg/Ti/Pd were prepared by pulsed laser deposition and evaluated for hydrogen absorption-desorption properties.
Takuma HASHIMOTO, Mitsuo NOTOMI
doaj   +1 more source

The preparation and properties of polyimide films modified by octa(aminopropylsilsesquioxane)

open access: yesJournal of Saudi Chemical Society, 2019
A number of polyimide films incorporated with different amounts of octa(aminopropylsilsesquioxane) (POSS-NH2) were prepared from 1,2,4,5-Benzenetetracarboxylic anhydride, 4,4′-Oxydianiline and POSS-NH2.
Benbo Liu   +4 more
doaj   +1 more source

Delamination of polyimide in hydrofluoric acid

open access: yesActa Polytechnica, 2021
Wet etching is a critical fabrication step for the mass production of micro and nanoelectronic devices. However, when an extremely corrosive acid such as hydrofluoric (HF) acid are used during etching, an undesirable damage might occur if the device ...
Asaad K. Edaan Al-mashaal   +1 more
doaj   +1 more source

Polyimide Copolymers and Nanocomposites: A Review of the Synergistic Effects of the Constituents on the Fire-Retardancy Behavior

open access: yesEnergies, 2022
Carbon-based polymer can catch fire when used as cathode material in batteries and supercapacitors, due to short circuiting. Polyimide is known to exhibit flame retardancy by forming char layer in condensed phase.
Shengdong Xiao   +3 more
doaj   +1 more source

Polyimide (PI) films by chemical vapor deposition (CVD): Novel design, experiments and characterization [PDF]

open access: yes, 2007
Polyimide (PI) has been deposited by chemical vapor deposition (CVD) under vacuum over the past 20 years. In the early nineties, studies, experiences and characterization were mostly studied as depositions from the co-evaporation of the dianhydride and ...
Senocq, François   +2 more
core   +1 more source

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