Associative and segregative phase separations of poly(N-tert-butylacrylamide)/poly(acrylic acid) mixtures. Effect of solvent
| Autor: | Leire Ruiz, M. Teresa Garay, Matilde Rodriguez, Luis Manuel León, J. Ramón Marin, J. Manuel Laza |
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| Rok vydání: | 2010 |
| Předmět: |
chemistry.chemical_classification
Polymers and Plastics Polymer Polyelectrolyte Solvent chemistry.chemical_compound Colloid and Surface Chemistry chemistry Polymer chemistry Materials Chemistry Thermal stability Physical and Theoretical Chemistry Fourier transform infrared spectroscopy Solvent effects Glass transition Acrylic acid |
| Zdroj: | Colloid and Polymer Science. 288:1593-1599 |
| ISSN: | 1435-1536 0303-402X |
| DOI: | 10.1007/s00396-010-2301-z |
| Popis: | Poly(N-tert-butylacrylamide) (PNtBAm) and poly(acrylic acid) (PAA) form interpolymer complexes in 1- and 2-propanol, blend in ethanol, whereas a segregative phase separation is observed when using methanol as solvent as shown by Fourier transform infrared (FTIR) spectrometry and elemental analysis studies. The composition of PNtBAm/PAA complexes has been determined. Thermal studies demonstrated that all complexes show unique glass transition temperatures, higher than those of the polymer components. Complexation of PAA with PNtBAm results in an improvement of its thermal stability. Solvent effects and specific interactions in the system PNtBAm/PAA have been studied by FTIR, revealing that differences in the polymer–solvent interactions are a decisive factor governing complex formation in solution. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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