Abstract
AbstractThe optical activities of poly(l‐menthyl vinyl ether) (PMVE), obtained by cationic polymerization were studied. The polymerizations were carried out at various temperatures (−72 to +30°C), with different solvents and catalysts. The optical rotation of PMVE, which was polymerized with BF3O(C2H5)2 in toluene at −72°C, was found to be independent of the initial monomer concentration; but it depends on the activity of the catalyst. The absolute values of optical rotation of PMVE decreased with increasing temperature and dielectric constant of the solvent. The relationship between the optical activities of PMVE and the polymerization conditions is discussed.
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