Accessible Unlicensed Requires Authentication Published by De Gruyter April 10, 2017

Time Dependence of Morphology and Mechanical Properties of Injection Molded Recycled PET

B. Molnár and F. Ronkay

Abstract

During research, injection molded samples were prepared from recycled poly(ethylene-terephthalate) granulate, and their mechanical properties were investigated as a function of time. To understand the changes in mechanical properties, both morphology of injection molded samples and recycled granulates were investigated. A three-phase morphological model was applied for the evaluation of morphological properties while mechanical properties were determined by tensile and impact tests. Relationship was found between morphological and mechanical characteristics as a function of time elapsed since production. Crystalline ratio, tensile strength, and modulus of injection molded specimens increased while impact strength decreased in the four weeks after production.


*Correspondence address, Mail address: Ferenc Ronkay, Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Műegyetem rkp. 3, Hungary, E-mail:

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Received: 2016-05-23
Accepted: 2016-09-08
Published Online: 2017-04-10
Published in Print: 2017-05-28

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