модифікація

Acylation of polystyrene with trifluoroacetic anhydride in a solution of aprotonic solvents, namely 1,2-dichloroethane, chlorobenzene at the presence of Lewis acid as catalyst results in obtaining of fluorinated polystyrene, which posses trifluoroacetic fragments in benzoic rings, preferably in position 4. In order to achieve a total substitution of benzene rings in polystyrene macromolecules, the ratio polystyrene : trifluoroacetic anhydride : AlCl3 must be at least 1:10:2.2 mol correspondingly

The polyethyleneterephtalate surface has been modified with new oligoperoxides, synthesized on the base of pyromellitic acid chloroanhydride, polyethylene glycol-9 and tert-butylperoxymethanole. The developed method allows to achieve the degree of surface modification up to 64 %. Ability of dextrane macromolecules attaching onto peroxidized surface has been shown. The correlation between the degree of surface modification and oligoperoxide concentration in solution, temperature and time of the modification process has been established.

The possibility of peroxy oligomer synthesis has been studied by three methods: telomerization of diepoxy derivatives of ethylene glycol or Bisphenol A using 1,2-epoxy-3-tert-butyl peroxypropane as telogen, modification of phenol-formaldehyde resins by 1,2-epoxy-3-tert-butyl peroxypropane and polycondensation of phenol containing –O–O– bonds with formaldehyde. The peroxy oligomers obtaining conditions have been established and 7 new oligomers with peroxy groups have been synthesized. The structures of synthesized oligomers have been verified by chemical and spectral methods.

Technology of polymer materials production based on polypropylene reinforced by modified basalt fibers has been obtained. The experimental results of polypropylene modification by benzoyl peroxides and mixture of benzoyl peroxide with methylvinylcyclosiloxane on mechanical properties of composite material have been shown. It has been established that composite materials based on crosslinked polypropylene reinforced by basalt fibers which are dressed by polyepichlorohydrin resins have the increased mechanical and thermo-physical properties.

The possibility of chemical modification of ED-24 epoxy resin peroxy derivative (PDER) by C9H4F16O fluorine-containing alcohol-telomer (FAT-C9) has been shown using 18-Crown and ZnCl2 catalytic system. The effect of catalyst amount, temperature and process time on the reaction rate has been studied. New peroxy oligomer containing fluorine atoms (FPO) has been synthesized and characterized. The FPO structure has been confirmed by IR-spectroscopy.

Experimental results concerning main regularities of paraffin tar and petroleum resins joint oxidation are presented. It has been shown that petroleum resin in the amount of 5 mas % as raw material component allows to intensify oxidation and improve operational characteristics of obtained bitumen.

New epoxy resins with fluorine atoms have been synthesized via chemical modification of dianic epoxy resin with fluorine-containing alhocols-telomers C7, C9 and C13, using benzyltriethylammonium chloride and KOH as a catalyst system. Their characteristics have been examined. The structure of synthesized products has been confirmed by IR-spectroscopy. It has been shown that new epoxy resins may be used as active plasticizers for industrial epoxy resin.

Показано можливість отримання йодованих полімерних плівок з контрольованим вивільненням йоду в процесі модифікації хітозанових плівок з розчину оцтової кислоти.

Modification of polyamide-6 by polyvinylpyrrolidone with molecular mass of 12000±2000 has been carried out using their mixing in formic acid solution followed by solvent evaporation. The possibility of films permolecular structure control, physico-mechnical and thermophysical properties by treatment conditions after their formation has been established.

Вивчено процес модифікації залишкового бітуму, одержаного при переробленні орховицької нафти, полімерними латексами Butonal. Встановлено, що при використанні таких модифікаторів зростає температура розм‘якшення і еластичність бітумів та зменшується їх пенетрація. Показано, що з використанням латексів Вutonal на основі залишку орховицької нафти можна одержувати товарні дорожні бітуми.