Associative and segregative phase separations of poly (N-tert-butylacrylamide)/poly(acrylic acid) mixtures. Effect of solvent

作者：Teresa Garay M; Ruiz Leire; Ramon Marin J; Manuel Laza J; Rodriguez Matilde; Leon Luis M

来源：Colloid and Polymer Science, 2010, 288(16-17): 1593-1599.

DOI：10.1007/s00396-010-2301-z

• Segregative phase separation
• Interpolymer complexes
• Hydrogen bonding
• Poly (N-tert-butylacrylamide)

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.

• 出版日期2010-11