scholarly journals Morphology and Contact Properties of Polytetrafluoroethylene-Like Films Deposited onto Track-Etched Membrane Surface in Vacuum

2018 ◽  
Vol 5 (3) ◽  
pp. 110-116 ◽  
Author(s):  
L. Kravets ◽  
R. Gainutdinov ◽  
A. Gilman ◽  
M. Yablokov ◽  
V. Satulu ◽  
...  
Keyword(s):  
Electron Beam ◽  
Membrane Surface ◽  
Composite Membranes ◽  
Water Contact ◽  
Polymer Nanostructures ◽  
Poly Ethylene Terephthalate ◽  
Beam Sputtering ◽  
Poly Ethylene ◽  
Track Etched Membrane ◽  
Etched Membrane

The surface morphology and wettability of nanoscale polytetrafluoroethylene-like films deposited onto the surface of the poly(ethylene terephthalate) track-etched membrane by RF-magnetron and electron-beam sputtering of polytetrafluoroethylene in vacuum have been studied. It was shown that the morphology of films formed with the use of these coating techniques varies considerably. This is due to the size of the deposited polymer nanostructures. The nanostructures produced by the electron-beam sputtering of polytetrafluoroethylene are much bigger in size. Investigation of the surface properties of the composite membranes obtained in these processes showns that the deposition of the polytetrafluoroethylene-like film onto track-etched membrane leads to hydrophobization of its surface. The water contact angle for the composite membranes significantly increases.<br /><br />

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.

Fast Removal of Cu (II) from Aqueous Solutions by PET Nanofibrous Membrane Modified with Acryamide

2013 ◽  
Vol 750-752 ◽  
pp. 1343-1346 ◽  
Author(s):  
Xiao Cui Dong ◽  
Ding Cao ◽  
Yan Shi ◽  
Zhi Feng Fu
Keyword(s):  
Aqueous Solutions ◽  
Ph Value ◽  
Membrane Surface ◽  
Nanofibrous Membrane ◽  
Maximum Adsorption Capacity ◽  
Element Analysis ◽  
Equilibrium Studies ◽  
Poly Ethylene Terephthalate ◽  
Ft Ir ◽  
Poly Ethylene

A novel nanofibrous membrane was used for removing Cu (II) from aqueous solutions. The poly (ethylene terephthalate) (PET) membranes were fabricated by electrospinning, and then grafted with acrylamide (AM) on the surface. The morphologies of the nanofiber was characterized by SEM, meanwhile, the chemical composition and element analysis on the membrane surface were measured by FT-IR and XPS, respectively. The Cu (II) adsorption experiment investigated the adsorption performance related to the pH value on. Equilibrium studies show that the adsorption process follows Langmuir model and the maximum adsorption capacity was estimated to be 183.25 [mg/g].

Electron beam induced grafting of N-isopropylacrylamide to a poly(ethylene-terephthalate) membrane for rapid cell sheet detachment

2011 ◽  
Vol 80 (2) ◽  
pp. 182-189 ◽  
Author(s):  
Marina K. Chumakov ◽  
Layla Shahamat ◽  
Alia Weaver ◽  
Jill LeBlanc ◽  
Mahnaz Chaychian ◽  
...  
Keyword(s):  
Electron Beam ◽  
Ethylene Terephthalate ◽  
Cell Sheet ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene
Sign in / Sign up

Export Citation Format

Share Document