Title:
Analysis of structural development during superdrawing of poly(ethylene terephthalate) fibers

dc.contributor.advisor Wang, Youjiang
dc.contributor.advisor Jacob, Karl I.
dc.contributor.author Jain, Vibhor en_US
dc.contributor.committeeMember Aneja, A.P.
dc.contributor.committeeMember Garmestani, Hamid
dc.contributor.committeeMember Thio, Yonathan S.
dc.contributor.committeeMember Yao, Donggang
dc.contributor.department Polymer, Textile and Fiber Engineering en_US
dc.date.accessioned 2009-06-08T19:18:55Z
dc.date.available 2009-06-08T19:18:55Z
dc.date.issued 2009-01-09 en_US
dc.description.abstract A comprehensive experimental study was conducted to determine the limitations in processing conditions for superdrawing. Experimental studies were carried out by uniaxial drawing tests at temperatures from 90 to 120°C and at strain rates ranging from 0.008/s to 0.425/s. Crystallinity and orientation of the drawn samples were evaluated using differential scanning calorimetry and birefringence measurements. This study revealed that increasing temperature from 110°C to 120°C leads to more crystallization at low strain rates (0.001/s), and less crystallization at high strain rates (0.1/s). Furthermore, it was shown for the first time that the mechanism of crystallinity development in PET undergoes a transition at draw temperature of 113°C and strain rate of 0.17/s. A new one-dimensional constitutive model was developed to predict the stress-strain behavior of PET fibers as they are drawn to very large draw ratios (up to 10) over a wide range of temperature (90-120°C) and strain rate (0.008-0.425/s). The model was based on the rubber elasticity theory and non-linear viscoelasticity. en_US
dc.description.degree Ph.D. en_US
dc.identifier.uri http://hdl.handle.net/1853/28185
dc.publisher Georgia Institute of Technology en_US
dc.subject Superdrawing en_US
dc.subject Stress-strain modeling en_US
dc.subject Crystallization en_US
dc.subject Fiber drawing en_US
dc.subject PET en_US
dc.subject.lcsh Stress-strain curves
dc.subject.lcsh Calorimetry
dc.subject.lcsh Fibers
dc.title Analysis of structural development during superdrawing of poly(ethylene terephthalate) fibers en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
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 21b5a45b-0b8a-4b69-a36b-6556f8426a35
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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