The use of radiation-induced graft polymerization for modification of polymer track membranes

Nanoporous β-PVDF membranes with selectively functionalized pores

“…Different methods can be used to modify membranes surface. Among them, radiografting polymerization consists in creating active sites either by c-irradiation [2,3], or plasma treatment [4], or electron irradiation [5] and then initiating polymerization of hydrophilic monomers. In the case of swift heavy ions, it has been suggested that this polymerization should be initiated from the ion tracks [6][7][8].…”

Radiation grafted poly(ethylene terephthalate)--polystyrene pervaporation membranes for organic/organic separation

“…Radiation-induced graft copolymerisation of various vinyl monomers such as styrene, acrylic acid, methacrylic acid, methyl-vinylpyridine, acrylonitrile, acrylamide, acrylamide methylpropane sulfonic acid and N,N-dimethylaminopropyl acrylamide has been carried out onto poly(ethylene terephthalate) (PET) fibres and flat-sheets in various occasions [32][33][34][35][36][37][38][39][40]. The use of PET as substrates was prompted by their excellent physico-chemical properties, such as good mechanical strength, good stability, high radiation resistance and cheapness that make them an excellent candidate for membrane development.…”

A study on the water permeability of poly(ethylene terephthalate) track membranes modified by dc discharge polymerization of N,N-dimethylaniline

“…According to the Poiseuille equation [14] for a stationary flow of a fluid in a channel of radius R i and length l, the volume of the fluid passed through the channel by the acting of pressure gradient ∆p for a time t will be as follows: (2) where η is the dynamic viscosity of water. Then the volume of water passed per unit area of the membrane containing n pores is equal to…”

“…The problem of manufacturing membranes with controllable transport properties, whose permeability can be regulated by varying external conditions, e.g., temperature [1][2][3][4], electric [5] or magnetic field [6], composition [7] and pH of solution [3,4,[8][9][10], and pressure [11], has attracted increasing interest. Research into this area is of great theoretical and practical importance, since it not only enables a wide range of membranes with unique properties to be manufactured but also opens up opportunities for the synthesis of materials that mimic biological membranes.…”

“…Relevant studies involve the well-directed formation of a chemical structure of the membrane surface layer. Various techniques are used for this purpose: chemical [1] or radiation-induced grafting [2], plasma preactivation of the surface with the subsequent grafting from solution [8], etc. For the same purpose, membranes are successfully modified by the surface deposition of thin polymer films obtained by means of plasma polymerization [11].…”