Abstract
A study was made of the effect of composition and distribution of monomer units on the properties of ternary ethylene-propylene-butylene copolymers synthesized using the Ac 3V—di-isobutylaluminium chloride catalytic system. It was shown that the addition of but-1-ene to the composition of a two component copolymer reduces the glass temperature and improves the physical and mechanical properties of ternary copolymers. A study was made of the effect of distribution of ethylene units on the crystallinity of a ternary copolymer. It was shown that crystallinity of polyethylene type may appear on increasing the probability of forming long ethylene units containing a minimum of 10 members. A study was made by calculation and experimentally of the effect of composition and the probability of forming M i - M j structures during copolymerization on the glass temperature of ethylene α-olefin copolymers. Experimental and calculated results showed satisfactory agrement.
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