Abstract
By using the improved isopiestic method, solvent activity measurements have been performed on the systems poly(ethylene glycol) 400 (PEG 400) + 1-propanol and 1-butanol at 298.15 K. Calcium chloride was used as the isopiestic standard for the calculation of activities. The obtained solvent activity data were correlated with the original Flory–Huggins model. The strength of interaction between different alcohols and the polymer was discussed on the basis of the obtained Flory–Huggins interaction parameters. Measurement of the density, speed of sound, and viscosity data were also performed at T = (288.15 to 328.15) K for the PEG 400 + 1-propanol and 1-butanol systems. The excess molar volume, VE, isentropic compression deviation, ΔKs, and viscosity deviation, Δη, have been calculated for each composition from the experimental data and fitted to the Redlich–Kister equation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
