SYNOPSISThe grafting of the cellulose with vinyl monomers in the absence of the radical initiators was studied. The nature of the grafting medium and of the promoters was varied. The obtained copolymers have been investigated by chemical and physicalchemical methods.

A new monomer, 4,5-dihydro-2-[2-(9-anthryl)ethyl]-1,3-OXa~Ok (5) was synthesized and polymerized by cationic ring-opening isomerization. The polymerization was carried out in bulk or in solution, using methyl tosylate, ethylene ditosylate and a-tosyl-w-tosyloxypoly(oxyethylene) [poly(ethylene oxide)ditosylate] as initiators. The polymers were characterized by IR, I H NMR and UV spectroscopy.

No abstract

ZUSAMMENFASSUNG:Beim mechanochemischen Abbau makromolekularer Produkte vom Polyestertyp entstehen neue Carboxylendgruppen, die mit entsprechenden Kondensationspartnern reagieren konnen. Nach diesem Prinzip wird Poly(athylenterephtha1at) durch Schwingmahlung abgebaut, und die Bruchstucke werden mit aliphatischen und aromatischen Diaminen polykondensiert.Die Polykondensationsprodukte, die Atome mit freien Elektronenpaaren (0, N) enthalten, vermogen mit verschiedenen Metallen zu komplexieren. Fiihrt man die Polykondensation in Gegenwart kristalliner Metallsalze (Eisen-oder Manganchlorid, Manganacetat) durch, so erhglt man unter denselben Bedingungen Polychelate. Die Zusammensetzung dieser Produkte hlngt von der Mahldauer, den Mengenverhiltnissen der Reaktionsteilnehmer sowie vom Anion des Metallsalzes ab. SUMMARY:The mechano-chemical degradation of macromolecular products of polyester type is accompanied by the formation of new carboxylic groups, capable of reacting with suitable condensing agents. According to this principle, poly(ethyleneterephtha1ate) is degraded by vibration-grinding and the fragments are polycondensed with aliphatic and aromatic diamines.The products of polycondensation containing atoms with free electron pairs (0, N) are capable of complexing with various metals. By carrying out the reaction in the presence of crystalline metal salts (ferric chloride, manganese chloride, manganese acetate) under the same conditions, polychelates are obtained. The composition of these products depends on the duration of grinding, the ratio of reagents and the anion of the metal salt. These polycondensation products, particularly the polychelates, are thermostable and show magnetic properties as well as the properties of a semiconductor.

SYNOPSISThe grafting on rayon fiber of acrylic and methacrylic monomers was studied through the decomposition of the hydroperoxide and peroxide groups, created in a process of ozonization. "he graft copolymers was characterized by chemical analysis, infrared spectroscopy, and themooxidative decomposition. FIG. 1. The ESR spectra of the radical obtained by decomposing the cellulose hydroperoxides.