(561a) Liquid Mixtures Freezing at Room Temperature: More Insights into Crystallization and Applications of Poly(trimethylene glycol)/Water Mixtures Conference: AIChE Annual MeetingYear: 2015Proceeding: 2015 AIChE Annual MeetingGroup: Engineering Sciences and FundamentalsSession: Thermophysical Properties and Phase Behavior IV Time: Wednesday, November 11, 2015 - 12:30pm-12:49pm Authors: Keith, J. A., University of Pittsburgh Koronaios, P., University of Pittsburgh Saravanan, K., University of Pittsburgh Morganstein, B., University of Pittsburgh Velankar, S., University of Pittsburgh Enick, R., University of Pittsburgh We give new details into experimental and computational investigations of the unexpected phase behavior in water:poly(trimethlyeneglycol) (i.e. poly(1,3-propane diol) mixtures that freeze at room temperature. Thermodynamic energies calculated from first principles quantum mechanics show the stability of crystalline phases in agreement with observation. Phase diagrams of poly(trimethylene glycol) and water are derived using liquid-liquid cloud point data, melting point data, and interpretations from NMR experiments. The use of state of the art genetic algorithm codes for polymer crystal predictions was found to be crucial for synergies between theory and experiment. Results from studies on possible applications for these inexpensive and non-toxic self-assembled materials will be discussed.