Shingo Kobayashi, H. Kataoka, Takashi Ishizone
Jul 2, 2009
Citations
0
Influential Citations
29
Citations
Journal
Macromolecules
Abstract
Anionic polymerization of 2-(1-adamantyl)-1,3-butadiene (1) was carried out either with s-BuLi in cyclohexane at 40 °C or with potassium naphthalenide in THF at −78 °C. The polymerizations of 1 quantitatively proceeded to afford the polymers possessing the predicted molecular weights based on the molar ratios between monomers and initiators and the narrow molecular weight distributions. The microstructure of the resulting poly(1) was affected by the initiators and the solvents. The contents of 1,4-repeating unit in poly(1)s obtained with s-BuLi in cyclohexane and with potassium naphthalenide in THF were 96 and 55%, respectively. The 1,4-rich poly(1) was completely converted into a novel saturated alternating copolymer, poly(ethylene-alt-1-vinyladamantane) (P(E-alt-VAd)), by the hydrogenation with p-toluenesulfonhydrazide. Poly(1) possessing the Mn value over 5000 was hardly soluble in common organic solvents, while the hydrogenated P(E-alt-VAd) was soluble in a wide variety of organic solvents. Novel well...