Interaction of cellulose with small molecules. Glycerol and ethylene carbonate
| Autor: | Lamont Hagan, Orville J. Sweeting, Leon Marker, Eric Wellisch |
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| Rok vydání: | 1960 |
| Předmět: |
Inert
Physics::Biological Physics Materials science Polymers and Plastics Astrophysics::High Energy Astrophysical Phenomena Inorganic chemistry General Chemistry Equilibrium moisture content Surfaces Coatings and Films Condensed Matter::Materials Science chemistry.chemical_compound chemistry Mole Materials Chemistry Glycerol Condensed Matter::Strongly Correlated Electrons Physics::Chemical Physics Cellulose Water content Softening Ethylene carbonate |
| Zdroj: | Journal of Applied Polymer Science. 3:331-337 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.1960.070030910 |
| Popis: | The equilibrium moisture content of films softened with hygroscopic glycerol or nonhygroscopic ethylene carbonate was determined as a function of softener concentration at 15, 35, 65, 81, and 93% R.H. and compared to the hygroscopicity of unsoftened film and of the pure softeners at the same concentrations. The difference in water content assumed to be caused by interaction between softener and cellulose was calculated in moles of water per mole of softener and per mole of cellulose. A quantitative measure of softener-cellulose interaction at low and high relative humidities is thus obtained. Ethylene carbonate shows a negative interaction and seems to function only as an inert cushion between cellulose chains, while glycerol interacts with cellulose. This interaction increases with decreasing moisture content (at lower relative humidities) and with increased softener concentration. The softener-cellulose interaction is a necessary condition for proper softening. |
| Databáze: | OpenAIRE |
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