Solvent Resistance of Silicone Elastomers: Solvent-Polymer Interactions
| Autor: | K. B. Yerrick, H. N. Beck |
|---|---|
| Rok vydání: | 1964 |
| Předmět: |
chemistry.chemical_classification
Polymers and Plastics Hydrogen Thermodynamics chemistry.chemical_element Polymer Solvent chemistry.chemical_compound Hildebrand solubility parameter chemistry Siloxane Yield (chemistry) Polymer chemistry Materials Chemistry medicine Copolymer Swelling medicine.symptom |
| Zdroj: | Rubber Chemistry and Technology. 37:261-267 |
| ISSN: | 1943-4804 0035-9475 |
| DOI: | 10.5254/1.3540310 |
| Popis: | The solubility parameters, δp, of a number of polymers have been determined by swelling in a series of solvents with various solubility parameter values, δ0. The δp values were obtained for (see PDF for diagram) During the course of this work it was concluded that solvent nature (polarity and association) play an important role in the swelling power of a solvent. These interactions create considerable ambiguity of the data in cases where dipole interaction or association takes place between polymer-solvent pairs or solvent-solvent pairs. For this reason a series of “select” solvents were chosen that did not display these interactions. Included in these “select” solvents were the aliphatic and aromatic hydrocarbons (δ0=6.0–9.2). In addition the aliphatic alcohols which are strongly hydrogen bonded were included to cover the upper range of δ0 values (δ0=10.8–14.2). This study has revealed that the swelling curves of siloxane copolymers yield only the individual δp values of the homopolymers. From these results it appears as though this type of measurement is not sensitive to copolymer structure, i.e., random or block copolymer structure. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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