Characterization of the dipeptide based micellar systems undecanoic alanine-alanine and undecanoic alanine-glycine
| dc.contributor.advisor | Billiot, Fereshteh | |
| dc.contributor.advisor | Billiot, Eugene | |
| dc.contributor.author | Maldonado, Savanna | |
| dc.contributor.committeeMember | Abdulla, Hussain | |
| dc.date.accessioned | 2020-04-28T13:33:38Z | |
| dc.date.available | 2020-04-28T13:33:38Z | |
| dc.date.issued | 2018-12 | |
| dc.description.abstract | Surfactant are surface-active-agents, meaning surfactants have the ability to lower surface tension. In this research, two dipeptide surfactants undecanoic alanine-alanine and undecanoic alanine-glycine were studied to better understand their micellar systems. Variations of pH, temperature, surfactant concentration, and counterion type were examined to determine what effect, if any, changing these variables would have on micelle formation and chiral recognition. The counter ions examined in this study were di-amine alkanes with a different number of methyl groups separating the amines. These counter ions are pH dependent and preliminary results have shown that pH effects the interaction of these counter ions with the amino acid polar head, and in turn effects the physical properties of the surfactants and their micellar behavior. Some of the properties examined include: the critical micelle concentration, Krafft temperature, enantiomeric separation of chiral compounds, hydrodynamic radius of the micelles as well as fraction bound of the surfactant and counterions to the micelles. These systems were studied using proton Nuclear Magnetic Resonance (NMR), Diffusion Order Spectroscopy (DOSY), Capillary Electrophoresis (CE) and a LabQuest 2 with attached conductivity and temperature probes. The results here provide a better insight on the behavior of these dipeptide micellar systems which will aid in future research. | en_US |
| dc.description.college | College of Science and Engineering | en_US |
| dc.description.department | Physical and Environmental Sciences | en_US |
| dc.format.extent | 51 pages | en_US |
| dc.identifier.uri | https://hdl.handle.net/1969.6/87831 | |
| dc.language.iso | en_US | en_US |
| dc.rights | This material is made available for use in research, teaching, and private study, pursuant to U.S. Copyright law. The user assumes full responsibility for any use of the materials, including but not limited to, infringement of copyright and publication rights of reproduced materials. Any materials used should be fully credited with its source. All rights are reserved and retained regardless of current or future development or laws that may apply to fair use standards. Permission for publication of this material, in part or in full, must be secured with the author and/or publisher. | en_US |
| dc.subject | Surfactant | en_US |
| dc.subject | Nuclear magnetic resonance (NMR) | en_US |
| dc.subject | Diffusion order spectroscopy (DOSY) | en_US |
| dc.subject | Capillary electrophoresis (CE) | en_US |
| dc.subject | Krafft point | en_US |
| dc.title | Characterization of the dipeptide based micellar systems undecanoic alanine-alanine and undecanoic alanine-glycine | en_US |
| dc.type | Text | en_US |
| dc.type.genre | Thesis | en_US |
| thesis.degree.discipline | Chemistry | en_US |
| thesis.degree.grantor | Texas A & M University--Corpus Christi | en_US |
| thesis.degree.level | Masters | en_US |
| thesis.degree.name | Master of Science | en_US |