SYNTHESIS AND CHRACTERIZATION OF COPOLYMERS OF N-VINYLCARBAZOLE AND ALKYLAMINO (METH) ACRYLATES
Abstract
THE PRESENT WORK IS CONCERNED WITH THE THERMAL COPOLYMERIZATION OF N-VINYCARBAZOLE (NVC) WITH 2-DIMETHYLAMINOETHYLMETHACRYLATE (DMAEMA),2-DIMETHYLAMINO ETHYLACNYLATE (DMACA), OR 2-METHACRYLOYLOXYETHYLDIMETHYLETHYLAMMONIUM IODIDE(QDMAEMA) USING 2,2'-AZOBISISOBUTYRONITRILE (AIBN) AS INITRATOR. THE DETERMINITION OFNYC CONTENT IN ALL COPOLYMERS WAS CARRIED OUT BY SPECTROSCOPY. THE REACTIVITYRATIO OF NVC (R1) AND THE ACRYLIC COMONOMERS (R2) WEREDETERMINED BY THE EXTENED METHOD OF KELEN-TUDOS FOR HIGH CONVER SIONS.THE REACTIVITY OF DMAEMA (R2>1)WAS FOUND TO BE HIGHER THAN THAT OF NVC (R1<1). THE DETERMINATION OF THE REACTIVITY RATIOS OF NVC AND DMAEMA IN DIFFERENT SOLVENTS SHOWED THAT IN A POLAR AND BASIC SOLVENT THE TENDENCY OF MONOMERS TO ALTERNATION IS HIGNER. THE VALUESOF THE REACTIVITY RATIOS OF NVC AND DMAEA INDICATE THAT DMAEA IS LESSREACTIVETHAN DMAEMA. THE REACTIVITY OF QDMAEMA IS THE SAME WITH THAT OF DMAEMA TOWARDS NYC. THE MICROSTRUCTURE OF COPOLYMERS NVC/DMAEMA AND NVC ...
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