Poly butene thermal properties

Vinyl ketones are an interesting class of monomers because various members of this group polymerize via a radical, anionic, and cationic mechanism. Methyl vinyl ketone (MVK) - also named 3-butene-2-one - is its best examined representative. The physical properties of poly(methyl vinyl ketone) (PMVK) depend on the polymerization conditions and the degree of polymerization. PMVK ranges from a viscous oil to a hard plastic or rubbery mass. Polymers obtained with free radical initiators are amorphous materials with low softening points (about 40 to 80 °C) and poor thermal and chemical stability [274,275]. The molecular weights are relatively low because of the lability of the protons in the oc-position to the carbonyl groups. 

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