| Autor: |
Yu.S. Bessonov, V.S. Yezhov, M.N. Rafikov, S.M. Yushkova, A.A. Tager, V.V. Guzeyev |
| Rok vydání: |
1979 |
| Předmět: |
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| Zdroj: |
Polymer Science U.S.S.R.. 21:1152-1160 |
| ISSN: |
0032-3950 |
| DOI: |
10.1016/0032-3950(79)90013-3 |
| Popis: |
Microcalorimetry and isothermal sorption have been used to study the enthalpy, free energy, and entropy of the reactions of di-octyl sebaceate modified PVC with chalk and Aerosil as filler. The di-octal sebaceate (DS) has been found to have little affinity for the PVC. The introduction of the fillers into the plasticized PVC variously affected the thermodynamic interaction parameters. The production of the PVC-DS-chalk composition has been found to be accompanied by positive values of all the thermodynamic interaction parameters; there is a dominant disarrangement of the polymer matrix. In the case of the PVC-DS-Aerosil composition the parameters were negative and this was enhanced by increasing the filler content. Competition has been found to exist between the PVC-DS, PVC-Aerosil, and DS-Aerosil contacts, so that an energetical interaction between DS and the Aerosil became dominant and resulted in better order in the system and in an improved thermodynamic stability. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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