Title:
Dependence of mechanical properties of partially oriented polymeric systems on chemical structure and molecular architecture
Dependence of mechanical properties of partially oriented polymeric systems on chemical structure and molecular architecture
| dc.contributor.advisor | Jacob, Karl I. | |
| dc.contributor.advisor | McDowell, David L. | |
| dc.contributor.author | Dong, Xin | |
| dc.contributor.committeeMember | Griffin, Anselm C. | |
| dc.contributor.committeeMember | Yao, Donggang | |
| dc.contributor.committeeMember | Gokhale, Arun | |
| dc.contributor.department | Materials Science and Engineering | |
| dc.date.accessioned | 2016-08-22T12:20:04Z | |
| dc.date.available | 2016-08-22T12:20:04Z | |
| dc.date.created | 2015-08 | |
| dc.date.issued | 2015-05-15 | |
| dc.date.submitted | August 2015 | |
| dc.date.updated | 2016-08-22T12:20:04Z | |
| dc.description.abstract | Partially oriented polymeric structures such as semi-crystalline polymers and liquid crystalline polymers/elastomer cover a wide range of synthetic and natural polymeric materials. Owing to the significant differences between the molecular structure and properties of ordered and amorphous regions, semi-crystalline polymers show complex patterns of behavior, although the molecular level mechanisms for deformation are still not well-understood. Molecular dynamics simulation based on a united atom method were performed, to study the crystallization behavior and molecular response of semi-crystalline polyethylene structures under external stresses in a time scale of nanoseconds to capture the molecular details. Using the data from molecular dynamics simulations, the effect of lamellae orientation on the stress-strain behavior was evaluated to understand the morphological evolution during deformation. The stress-induced morphological changes of free-standing and supported thin films with strong interacting surfaces were also investigated. Process-structure-property relationships are also investigated for liquid crystalline elastomers, with experimental approaches for validation. Structures and properties of a series of azobenzene containing liquid crystalline elastomeric films were characterized in detail. | |
| dc.description.degree | Ph.D. | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.uri | http://hdl.handle.net/1853/55506 | |
| dc.language.iso | en_US | |
| dc.publisher | Georgia Institute of Technology | |
| dc.subject | Semi-crystalline polymer | |
| dc.subject | Liquid crystalline elastomer | |
| dc.subject | Molecular dynamics | |
| dc.subject | Azobenzene | |
| dc.subject | Photoresponsive | |
| dc.subject | Actuator | |
| dc.title | Dependence of mechanical properties of partially oriented polymeric systems on chemical structure and molecular architecture | |
| dc.type | Text | |
| dc.type.genre | Dissertation | |
| dspace.entity.type | Publication | |
| local.contributor.advisor | McDowell, David L. | |
| local.contributor.advisor | Jacob, Karl I. | |
| local.contributor.corporatename | School of Materials Science and Engineering | |
| local.contributor.corporatename | College of Engineering | |
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| relation.isOrgUnitOfPublication | 7c022d60-21d5-497c-b552-95e489a06569 | |
| thesis.degree.level | Doctoral |