Abstract
Several terpolymers of ethylene, vinyl acetate and vinyl alcohol have been prepared by controlled transformation into hydroxyls of the acetate groups of an ethylene-vinyl acetate copolymer (with 28 wt.-% in vinyl acetate). The degree of transformation has been determined by 1H NMR. Samples covering the entire range of transformations have been obtained, and their properties have been analyzed by DSC and X-ray diffraction. The results show a marked increase of both melting temperature and crystallinity as the degree of transformation increases, owing to the fact that the vinyl alcohol units are able to cocrystallize in the polyethylene lattice, while the acetate groups are excluded.
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