Differential Thermal Analysis

Polymer materials have rapidly found wide application in engineering as construction materials, chiefly owing to those of properties that make them superior to metals, i.e., their resistance to corrosion, low specific gravity, aesthetic appearance, etc. But polymer materials also have disadvantages that are not shared by metals. Compared to metals, they have lower mechanical strength, relatively low thermal stability, etc. Hence the idea to combine polymers and metals into compounds exhibiting as many advantages of either parent material as possible with the number of their disadvantages reduced to a minimum. Therefore, trials were commenced to fill polymers with dispersed surface-active metals to obtain the so-called metallopolymers, and a large number of synthesis procedures have been developed for obtaining organometallic polymers with metal atoms directly or indirectly linked to carbon in the chain. In this way, materials with valuable properties have been obtained, including typical noncondu...

Metal-Containing Polymers

The preirradiation grafting of acrylic acid (AA) onto poly(ethylene terephthalate) (PET) had been found to affect the thermal and physical characteristics of fabric. The grafted fabrics with various graft levels were characterized by thermal gravimetric analysis (TGA), ATR-FTIR spectroscopy, contact angle, differential scanning calorimetry (DSC), X-ray diffraction (XRD), atomic force microscopy (AFM), and scanning electron microscopy (SEM). The initial decomposition temperature and T50 were increased with the increase in degree of grafting. The percentage crystallinity was decreased as the degree of grafting increases. The detailed elemental analysis was done by X-ray photoelectron spectroscopy (XPS). The atomic ratio (O1s/C1s) was found to increase significantly with increasing the degree of grafting and reached 0.64 at 14.5% grafting from 0.38 for virgin PET. The surface topography and morphology was strongly influenced as the degree of grafting was increased. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010

V.B. Zlatev

Papers

Some properties of polyethylene terephthalate-acrylic acid copolymers and ionomers

Optimization of conditions for grafting acrylic acid to polyethylene terephthalate by radiation