Measurement of The Flory Huggins Interaction Parameter of PHA-PS and PHA-PLA
School Name
Governor's School for Science & Mathematics
Grade Level
12th Grade
Presentation Topic
Chemistry
Presentation Type
Mentored
Oral Presentation Award
4th Place
Written Paper Award
3rd Place
Abstract
The Flory-Huggins Interaction Parameter is the repulsive force between two diblock copolymers; diblock copolymers being unique with the ability to transform into many different known morphologies and the ability to retain properties of the two different copolymer chains consisting the diblock. In this experiment, the novel polymers, PHA-PLA [HL] and PHA-PS [HS], were studied for their previously not characterized parameters. After synthesizing the polymers accordingly, the polymers are then characterized through gel permeation chromatography (GPC) and nuclear magnetic resonance spectroscopy (NMR) verifying their successful synthesis. The polymers are then prepared in slides to be studied through small angle x-ray scattering (SAXS). To study a polymer’s Flory-Huggins Interaction, the polymer must be in its molten form, or the disordered morphology. As temperature rises, the Flory-Huggins Interaction Parameter decreases and eventually results in the disordered morphology, a mixed pool of the copolymers. After attempting to disorder the polymer using Linkam, the polymers were then observed to be ordered. The polymers were found to be robust and maintain a low, however not specified, Flory-Huggins Interaction Parameter through comparison to other similar polymers.
Recommended Citation
Nguyen, Lam, "Measurement of The Flory Huggins Interaction Parameter of PHA-PS and PHA-PLA" (2017). South Carolina Junior Academy of Science. 46.
https://scholarexchange.furman.edu/scjas/2017/all/46
Location
Wall 226
Start Date
3-25-2017 10:15 AM
Presentation Format
Oral and Written
Group Project
No
Measurement of The Flory Huggins Interaction Parameter of PHA-PS and PHA-PLA
Wall 226
The Flory-Huggins Interaction Parameter is the repulsive force between two diblock copolymers; diblock copolymers being unique with the ability to transform into many different known morphologies and the ability to retain properties of the two different copolymer chains consisting the diblock. In this experiment, the novel polymers, PHA-PLA [HL] and PHA-PS [HS], were studied for their previously not characterized parameters. After synthesizing the polymers accordingly, the polymers are then characterized through gel permeation chromatography (GPC) and nuclear magnetic resonance spectroscopy (NMR) verifying their successful synthesis. The polymers are then prepared in slides to be studied through small angle x-ray scattering (SAXS). To study a polymer’s Flory-Huggins Interaction, the polymer must be in its molten form, or the disordered morphology. As temperature rises, the Flory-Huggins Interaction Parameter decreases and eventually results in the disordered morphology, a mixed pool of the copolymers. After attempting to disorder the polymer using Linkam, the polymers were then observed to be ordered. The polymers were found to be robust and maintain a low, however not specified, Flory-Huggins Interaction Parameter through comparison to other similar polymers.
Mentor
Mentor: Morgan Stefik, University of South Carolina