Crystalline-Amorphous Poly ethylene-butene Copolymers

Crystalline-Amorphous Poly(ethylene-butene) Copolymers 

We will first present an overview of the experimental findings in terms of structure diagrams temperature versus wax volume fraction maps that indicate the different structures found by SANS experiments for each of the investigated polymer-wax systems. This overview will be then followed by a detailed presentation of the structures and morphologies formed by the 

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Crystalline-amorphous poly(ethylene-butene) copolymers PEB-n... 

It should be added that alternating ethylene/2-butene copolymers can exhibit stereoregularity namely the ethylene/cA-2-butene copolymer, which possesses an erythro-diisotactic structure and is a crystalline polymer. It may be interesting to note that from the formal point of view the alternating eryt/zro-diisotactic ethylene/cA-2-butene copolymer, i.e. erythro-diisotactic poly[ethylene- //-(c/.v-2-butene)], can be treated as isotactic head-to-head and tail-to-tail polypropylene. Isomeric trans-2-bu. ene gives atactic amorphous copolymers with ethylene [2,82]. 

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