Study of blends from recycled polymer for properties improvement

  • Kelly Gallego Universidad de Antioquia
  • Betty Lucy López Universidad de Antioquia
  • Carmiña Gartner Universidad de Antioquia
Keywords: PP, PET, maleic anhydride (AM), grafting, polymer blends


Polypropylene (PP) presents low impact resistance at low temperatures and easily undergoes thermal degradation. On the other hand, polyethylene terephtalate (PET) is very hygroscopic. One way to overcome these weaknesses is to blend both polymers trying to reach a good interaction through the insertion of polar functional groups within the PP backbone chain. In this study, recycled PP was grafted with maleic anhydride (AM), and the insertion was quantified by measuring carbonyl index with a Fourier Transform Infrared Spectrophotometer (FTIR). Rheometer blends were prepared using recycled PP (grafted and ungrafted) with recycled PET and their compatibility was analyzed using scanning electron microscopy (SEM) and differential scanning calorimeter (DSC). Other properties such as hardness and water absorption were also measured. It was concluded that grafting recycled PP made it more compatible with recycled PET.

= 22 veces | PDF (ESPAÑOL (ESPAÑA))
= 17 veces|


Download data is not yet available.

Author Biographies

Kelly Gallego, Universidad de Antioquia
Grupo de Ciencia de los Materiales
Betty Lucy López, Universidad de Antioquia
Grupo de Ciencia de los Materiales
Carmiña Gartner, Universidad de Antioquia
Grupo de investigaciones pirometalúrgicas y de materiales —GIPIMME—


J. M. G. Martínez, J. Taranco, O. Laguna, E. P. Collar. “Modification of Polypropylene by Maleic Anhydride.” Polymer Engineering and Science. Vol.11. 1992. pp. 335-

M. Y. Pedram, H. R. Vega, B. Quijada. “Melt Funcionalization of polypropylene UIT Methyl Esters of Itaconic Acid”. Polymer. Vol. 42. 2001. pp. 4751-4758.

G. S. Paulo, A. Campos, C. A. Márcia.“Grafting of Tetrahydrophthalic and Maleic Anhydride Onto polyolefins in solution”. Chem Soc. Vol. 15. 2004. pp. 532-540.

S. Malaika, W. Kong. “Reactive processing of Polymers: Effect of In Situ Compatibilization on characteristics of blends of Polyethylene Terephtalate and Ethylene-Polypropylene Rubber”. Polymer. Vol. 46. 2005. pp. 209-228.

Y. Li, X. Xiea, B. Guo. “Study on styrene-assisted melt free radical grafting of maleic anhydride onto polypropylene”. Polymer. Vol. 42. 2001. pp. 3419-3425.

M. Saule, S. Navarre, O. Babot. “Chemical Modification of Molten Polypropylene by Thermolysis of Peroxidic Compounds”. Macromolecule. Vol. 36. 2003. pp. 7469-7476.

P. Santos, S. Pezzin. “Mechanical Properties of Polypropylene reinforced with recycled PET fibers”. Journal of Materials Processing Technology. Vols. 143-144. 2003. pp. 517-520.

D. Shi, J. Yang, Z. Yao. “Functionalization of isotactic polypropylene with maleic anhydride by reactive extrusion: mechanism of melt grafting”. Polymer. Vol. 42. 2001. pp. 5549-5557.

How to Cite
Gallego K., López B. L., & Gartner C. (2006). Study of blends from recycled polymer for properties improvement. Revista Facultad De Ingeniería Universidad De Antioquia, (37), 59-70. Retrieved from