Study of Structure and Optical Density of Track Membranes

2019 ◽  
Vol 945 ◽  
pp. 482-487
Author(s):  
V.I. Pavlenko ◽  
N.I. Cherkashina ◽  
V.A. Manaev
Keyword(s):  
Wavelength Range ◽  
Optical Density ◽  
Heavy Ion ◽  
Light Filter ◽  
Track Membrane ◽  
Ultraviolet Region ◽  
Poly Ethylene Terephthalate ◽  
Track Membranes ◽  
Density Values ◽  
Poly Ethylene

This work presents research results of surface, including optical characteristics of poly (ethylene terephthalate) film under the influence of heavy ion radiation and following chemical etching for use as light filter. The optical density of the films and track membranes was determined in the wavelength range of 310-990 nm. Optical density measurements were carried out with gap of 50 nm. Track membrane was researched with the track diameters of 300 nm and concentration of 4·108см-1. It is determined, that the optical density of the initial film and irradiated are comparatively low in the entire researched wavelength range and does not exceed the value of 0.1. It is shown that for the track membrane in the ultraviolet region there is a sharp rise in the optical density values, at the wavelength of 650 nm to the maximum value, and the values gradually decrease in visible color and continue to decrease in the IR region.

scholarly journals STUDY OF THE STRUCTURE AND OPTICAL DENSITY OF POLYIMIDE TRACK (NUCLEAR) MEMBRANE

2020 ◽  
pp. 97-105
Author(s):  
N. Cherkashina ◽  
Z. Pavlenko ◽  
V. Manaev ◽  
E. Samoilova ◽  
R. Sidelnikov
Keyword(s):  
Wavelength Range ◽  
Optical Density ◽  
Chemical Etching ◽  
Ion Irradiation ◽  
Oxidative Degradation ◽  
Polyimide Film ◽  
Surface Hydrophobicity ◽  
Heavy Ion ◽  
Track Membrane ◽  
Polyimide Membrane

The paper presents the results of a study of the surface and optical properties of the PM-1 polyimide film and the polyimide track membrane. For the study, polyimide (track) nuclear membranes manufactured by ION TRACK TECHNOLOGY FOR INNOVATIVE PRODUCT (it4ip, Belgium)) is used. The pore diameter is 200 nm, the pore density is 5 • 108 cm-1, and the thickness of the polyimide membrane is 25 μm. The data of IR spectroscopy are presented. It is shown that the decrease in the intensity of the peaks of the IR spectra of the membrane compared to the film is a consequence of the oxidative degradation of the polyimide after exposure to heavy ions and chemical etching. The data on the effects of heavy ion irradiation and chemical etching of a polyimide film to obtain a membrane on surface hydrophobicity / hydrophilicity are presented. The optical density of the film and track membranes is determined in the wavelength range of 350-950 nm. The optical density is measured in increments of 50 nm. It is shown that despite the strong difference in the spectral dependence of the optical density of the polyimide film and the track membrane, the optical density of the PM-1 film and the track membrane is quite low in the entire studied wavelength range and does not exceed 0.26 and 0.42, respectively.

Polymer Composite Nanomembranes with Asymmetry of Conductivity

2010 ◽  
Vol 636-637 ◽  
pp. 812-818 ◽  
Author(s):  
L. Kravets ◽  
S. Dmitriev ◽  
G. Dinescu ◽  
V. Satulu ◽  
A. Gilman ◽  
...  
Keyword(s):  
Plasma Polymerization ◽  
Ethylene Terephthalate ◽  
Membrane Surface ◽  
Electrolyte Solutions ◽  
Track Membrane ◽  
Pore Geometry ◽  
Rectification Effect ◽  
Biochemical Sensors ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

This paper describes a structure and electrotransport properties of poly(ethylene terephthalate) track membrane (PET TM) modified by plasma of thiophene. It is shown that the deposition of the polymer on the track membrane surface by plasma polymerization of thiophene in case of forming a semipermeable layer results in creation of composite nanomembrane having in electrolyte solutions of asymmetry of conductivity - a rectification effect. It is caused by presence in the membrane of two layers with various functional groups, and also by changing of the pore geometry. Such type membranes can be used for creation of chemical and biochemical sensors.

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