R. L. Mckiernan, S. Gido, J. Penelle
May 1, 2002
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0
Influential Citations
32
Citations
Journal
Polymer
Abstract
Abstract Long-chain aliphatic α,ω-diols containing up to 32 consecutive methylene groups were synthesized by several methods and characterized. 1,22-Docosanediol HO–(CH 2 ) 22 –OH and 1,32-dotriacontanediol HO–(CH 2 ) 32 –OH both exhibited a solid–solid phase transition before melting. The α,ω-diols HO–(CH 2 ) m –OH, where m =12, 22, or 32, were reacted in the melt with much shorter aliphatic α,ω-diisocyanates OCN–(CH 2 ) n –NCO, where n =4, 6, 8, or 12, producing a series of linear, aliphatic, and increasingly polyethylene-like m , n -polyurethanes. Characterization (by DSC, TGA, and SAXS) of the m , n -polyurethane series showed that when the aliphatic segments were increased, and the hydrogen-bonding densities thus decreased, the polymers displayed physical and thermal properties (for example, solubility and melting temperature) typical of polyethylene.