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PET Oligomer Waste to Modify CAP Characteristics
Centro de Tecnologia, Instituto de Macromoléculas Professora Eloisa Mano-IMA, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
Centro de Tecnologia, Instituto de Macromoléculas Professora Eloisa Mano-IMA, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
Centro de Tecnologia, Instituto de Macromoléculas Professora Eloisa Mano-IMA, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
Centro de Tecnologia, Instituto de Macromoléculas Professora Eloisa Mano-IMA, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
- 1 Centro de Tecnologia, Instituto de Macromoléculas Professora Eloisa Mano-IMA, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
- 2 Centro de Tecnologia, Instituto de Macromoléculas Professora Eloisa Mano-IMA, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
- 3 Centro de Tecnologia, Instituto de Macromoléculas Professora Eloisa Mano-IMA, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
- 4 Centro de Tecnologia, Instituto de Macromoléculas Professora Eloisa Mano-IMA, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
Materials Sciences and Applications·Volume 03 (2012)·Pages 575–579·Published 22 August 2012·DOI10.4236/msa.2012.38082
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Abstract
To develop an improved method of reusing poly(ethylene terephthalate) (PET) waste in the production chain, it was chemically modified with pentaerythritol (PENTE), resulting in PET/PENTE (60/40) oligomer. This was added to petroleum asphalt cement (CAP) in different proportions—5, 10 and 20 wt%—as a modifier of bitumen characteristics. The mixture was evaluated by thermogravimetry (TG/DTG), differential scanning calorimetry (DSC), infrared spectroscopy (FT-IR), optical microscopy (OM) and the adhesion-peel test. The oligomer enhanced substantially the asphalt thermal stability-Tonset. OM images showed strong compatibility between components and PET’s amorphization. PET oligomer increased CAP’s wettability and the mixture presented cohesive fracture through the peel test. The mixture has excellent potential as paving material.
KeywordsPET WastePentaerythritolCAPRecycling
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