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Material analysis of a self-reinforced poly (ethyleneterephthalate) composite
KTH, School of Chemical Science and Engineering (CHE).
2014 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Materialanalys av en självförstärkt PET komposit (Swedish)
Abstract [en]

Methods as infrared spectroscopy, X-ray, birefringence and DSC are often used on polymer

fibres or films to detect changes in crystallinity, chain orientation and other microstructural

changes in the material.

In this study a self-reinforced Poly(ethylene Terephthalate) (PET) composite is processed

with different degree of shrinkage or elongation during heating and forming. Normal spun

PET fibre can be cold drawn to increase the crystallinity and mechanical properties. This

study investigates whether this phenomenon is detectable for fibres in composites and can

explain the change in mechanical properties at different elongations during processing.

Furthermore, this study investigates if these common analysis methods for fibre or films can

be used to analyse a PET self-reinforced composite.

X -ray indicates no difference in the theoretical size of the crystals.

All samples were birefringence, which indicate an anisotropic material, crystals, however due

to a lack of equipment the changes in the crystal orientation could not be fully investigated.

Reflective IR-analysis did not work on the composite and transmission appears to work.

Interpretation models as a common baseline or baseline of each peak do not work. Lack of

expertise and information of matrix make batch peak analyse not viable, but this

interpretation model might work.

Place, publisher, year, edition, pages
2014.
Keyword [en]
PET, Poly (ethylene terephthalate), all-polymer, self-reinforced, crystallinity
National Category
Polymer Technologies
Identifiers
URN: urn:nbn:se:kth:diva-158555OAI: oai:DiVA.org:kth-158555DiVA: diva2:778274
Available from: 2015-01-09 Created: 2015-01-09 Last updated: 2017-08-28Bibliographically approved

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