Parametre de solubilite d'un polyurethanne de structure definie |
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| Authors: | Adolphe Chapiro Michèle Lamothe T. Le Doan |
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| Affiliation: | Laboratoire de Chimie Macromoléculaire sous Rayonnement, C.N.R.S., 92190 Meudon, France |
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| Abstract: | The limiting swelling of a polyurethane of well defined structure was investigated in numerous solvents. It was found that the polymer dissolved for a very narrow range of solubility parameter (δ) values. The swelling in various solvent mixtures exhibits a sharp maximum for δ = 9.6±0.2. This value is suggested for δ of the polyurethane. Theoretical evaluations lead to a similar result. It was also found that for N-vinylpyrrolidone, a solvent for the polyurethane, δ is between 9.5 and 11.1. |
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