Effect of rigid rod molecular structures on the properties of regenerated and virgin poly(ethylene terephtalate)

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2004

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Duru, C. Zeynep

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In recent years,the recycling of plastic waste incerased worldwide.The basic impetus for this increase is the public awereness regarding polltuion of the environment.Many different types of recycling processes are being used to reduce the use of raw materials and to reduce energy consumption.PET recycling is one of the most important recycling processes.addition of thermotropic liquid crystalline polymers has also become wide-spread in recent years to increase their mechanical properties and other selected properties.In this study,it is aimed to obtai a continous or discontinous fiber from the termotropic liquid crystalline copolyester and recycled PET blend.In this study X7G was used as a copolyester.In the polymer mixtures small amounts of liquid crystalline plymer phase resulted in significantr improvements in the mechanical properties of the fibers produced in the study.The blending method used gave an alost homogeneous poymer mixture which was unexpected tat needs further study to elaborate.The preliminary DSC,SEM, tensile testing and intrinsic viscosity measurements support this conclusion.The material obtained approached to fiber grade PET in terms of fiber forming properties which therefore can be used as a second grade fiber material.

Subject Keywords

Polymers.

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http://etd.lib.metu.edu.tr/upload/2/12605444/index.pdf
https://hdl.handle.net/11511/14403

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

C. Z. Duru, “Effect of rigid rod molecular structures on the properties of regenerated and virgin poly(ethylene terephtalate),” M.S. - Master of Science, Middle East Technical University, 2004.