Title:
Oligomer spin-solvent gel-fiber spinning
Oligomer spin-solvent gel-fiber spinning
| dc.contributor.advisor | Yao, Donggang | |
| dc.contributor.author | Wyatt, Tom Pieter | |
| dc.contributor.committeeMember | Deng, Yulin | |
| dc.contributor.committeeMember | Griffin, Anselm | |
| dc.contributor.committeeMember | Kumar, Satish | |
| dc.contributor.committeeMember | Wang, Youjiang | |
| dc.contributor.department | Materials Science and Engineering | |
| dc.date.accessioned | 2016-08-22T12:21:02Z | |
| dc.date.available | 2016-08-22T12:21:02Z | |
| dc.date.created | 2015-08 | |
| dc.date.issued | 2015-07-23 | |
| dc.date.submitted | August 2015 | |
| dc.date.updated | 2016-08-22T12:21:02Z | |
| dc.description.abstract | A fundamental process design for gel-spinning semi-crystalline polymers was developed. An oligomer-spin solvent was shown to fulfill the requirements of an ideal gel-spinning spin-solvent. The concept was tested on two polymers that are difficult to spin into fiber using conventional techniques: POM and PEO. Fibers produced by gel-spinning a PEO/PEG solution achieved tensile strength greater than 0.6 GPa and Young’s modulus greater than 4.3 GPa, significantly stronger and stiffer than PEO fibers spun from conventional spinning techniques. POM gel-spinning with PEG spin-solvent exhibited degradation due to the innate chemistry of the POM molecule. Using caprolactam as the gel-spinning spin-solvent produced a stable spin-dope and yielded fibers with tensile strength greater than 1.8 GPa and Young’s modulus greater than 36 GPa. The efficiency of the gel-spinning process was improved through a mechanical spin-solvent extraction process. Twisting the gel-fiber was shown to remove more than 80% of spin-solvent from the gel-fibers without requiring an additional extraction solvent. The mechanical extraction process was shown to be effective for both volatile and non-volatile spin-solvents. The tensile properties and surface morphology of the mechanically extracted fibers after hot-drawing were shown to be nearly identical to gel-fibers extracted using the conventional chemical extraction process. | |
| dc.description.degree | Ph.D. | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.uri | http://hdl.handle.net/1853/55540 | |
| dc.publisher | Georgia Institute of Technology | |
| dc.subject | Fiber | |
| dc.subject | Spinning | |
| dc.subject | Gel | |
| dc.subject | High strength | |
| dc.title | Oligomer spin-solvent gel-fiber spinning | |
| dc.type | Text | |
| dc.type.genre | Dissertation | |
| dspace.entity.type | Publication | |
| local.contributor.advisor | Yao, Donggang | |
| local.contributor.corporatename | School of Materials Science and Engineering | |
| local.contributor.corporatename | College of Engineering | |
| relation.isAdvisorOfPublication | 34eb411b-9c1d-43b8-b5a6-cf597e5f79cf | |
| relation.isOrgUnitOfPublication | 21b5a45b-0b8a-4b69-a36b-6556f8426a35 | |
| relation.isOrgUnitOfPublication | 7c022d60-21d5-497c-b552-95e489a06569 | |
| thesis.degree.level | Doctoral |