Abstract
A series of inorganic salts was dissolved in poly(propylene oxide) (PPO) oligomers, and the effect of temperature on the salt solubility was analyzed. Some of alkali metal salts were separated out as crystals by heating from PPO oligomers (Mw=400−4000). The salts, which were crystallized by heating, were revealed to have relatively higher lattice energy. The threshold of the lattice energy of these phase-separated salts decreased with increasing cation radius. The solubility of these salts turned to zero on increasing average molecular weight of PPO. This suggested the considerable contribution of the terminal hydroxyl groups of the PPO to the solubility of these salts. The increase of molecular motion in PPO oligomers with elevating temperature was expected to induce the distortion of the cooperative coordination of PPO to the cation. This might be the reason of the decrease in the solubility of salts in PPO.
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.
