Syntheses of new polymers by destructive methods—I. Mechanochemical polycondensation and polycondensation by 8Co γ-rays irradiation of poly(ethyleneterephthalate) with ethylenediamine

ESR Spectroscopy in Polymer Research

“…It was further shown that the ESR method may be sucessfully applied for a direct study of bond rupture in highly oriented fibers and films of the following polymers: polyethylene306, 510, 536, 540,1099,1100,1557,1800,1878.2474-2476,2479,2504), polypropylene1100, 1378,1800,1881,1877,1878,2504), polyisobutylene 306), polytetrafluoroethylene306, 1099,1100,1878,1880,2481), polydienes (see references in Chapter 8.4), poly(methyl methacrylate) 306,363,540,1100,1826,1876,1878), polystyrene306, 1468,1596,1826,2187), poly(vinyl alcohol)360, 1799), poly(vinyl chloride )1378), polyoxymethylene 11 00, 1799), poly(2,6-dimethyl-p-phenylene oxide )1559), polyamidesI78, 306,388,452,488,536,S38,540,542,848, 1058, 1095, 1378, 1385,1437,1774, 1905,2107,2190,2193,2212,2359,2360,2472,2474,2477,2499,2504) polyesters452, 540,1378,1556,1558,2013,2480), polysulphides 2506 ), polysiloxanes 29), wool and silk 2425 ) and lignin 797), polynucleotides (DNA)6, 7). It was further shown that the ESR method may be sucessfully applied for a direct study of bond rupture in highly oriented fibers and films of the following polymers: polyethylene306, 510, 536, 540,1099,1100,1557,1800,1878.2474-2476,2479,2504), polypropylene1100, 1378,1800,1881,1877,1878,2504), polyisobutylene 306)...…”

A new process for producing polyamide from polyester

“…Simionescu et al 1,2 proposed a method for producing a novel polymer by reacting a diamine with a radical which is generated by cutting a molecular chain of polyethyleneterephthalate (hereinafter referred to as PET) by mechanical means or by using radiant ray. This idea, which is polymer to polymer, is very interesting, but their method is not satisfactory for producing polyamide which requires a high degree of polymerization suitable for practical use from PET.…”