Hostname: page-component-77c89778f8-gvh9x Total loading time: 0 Render date: 2024-07-19T05:56:48.106Z Has data issue: false hasContentIssue false
  • English
  • Français

Recycled HDPE-tetrapack composites. Isothermal crystallization, light scattering and mechanical properties

Published online by Cambridge University Press:  01 March 2013

A Parada-Soria ,
HF Yao ,
B Alvarado-Tenorio ,
L Sanchez-Cadena  and
A Romo-Uribe
A Parada-Soria
Affiliation:
Laboratorio de Nanopolimeros y Coloides, Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Cuernavaca Mor. 62210, MEXICO.
HF Yao
Affiliation:
Laboratorio de Nanopolimeros y Coloides, Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Cuernavaca Mor. 62210, MEXICO.
B Alvarado-Tenorio
Affiliation:
Laboratorio de Nanopolimeros y Coloides, Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Cuernavaca Mor. 62210, MEXICO.
L Sanchez-Cadena
Affiliation:
Facultad de Química, Universidad de Guanajuato, Gto, MEXICO.
A Romo-Uribe*
Affiliation:
Laboratorio de Nanopolimeros y Coloides, Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico, Cuernavaca Mor. 62210, MEXICO.
*
*To whom correspondence should be addressed: aromo-uribe@fis.unam.mx
Get access

Abstract

In this research the thermal and mechanical properties of composites based on recycled high-density polyethylene (HDPE) and recycled Tetrapak have been investigated. The matrix and filler are recovered from landfills. Multicolor HDPE mixtures, with varying concentration of tetrapack flakes, are hot pressed, as well as single color HDPE flakes. Previous studies determine that the nature of the pigment (organics vs. inorganics) strongly influence the mechanical behavior of multicolor HDPE-tetrapack composites. Thus, this research focuses on single color HDPE hot pressed plaques. The kinetics of crystallization under isothermal conditions is determined by differential scanning calorimetry (DSC). The results show that the crystallization kinetics obeys the Avrami theory, and that the Avrami exponent is 1, irrespective of the pigment in use. Small-angle light scattering is applied to investigate the internal structure of the pigmented HDPE. SALS patterns show that the samples exhibited oriented morphologies. However, after melting and slow cooling under pressure the samples exhibit an isotropic morphology. This is confirmed by polarized optical microscopy. Mechanical properties such as Young’s modulus, yield stress and ultimate tensile stress are obtained under uniaxial tensile deformation at room temperature. For the single color HDPE plaques the Young’s modulus is reduced (after melting), suggesting that the anisotropic molecular chains contribute to the higher value of Young’s modulus.

Keywords

waste managementstructuralkinetics
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1485: Symposium 7D – Advanced Structural Materials—2012 , 2012 , pp. 77 - 82
Copyright
Copyright © Materials Research Society 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Khoo, T.S., Ratnam, M.M., Shahnaz, S.A.B. and Abdul Khalil, H.P.S., J Reinf Plas Compos. 27, 1723 (2008).CrossRefGoogle Scholar
Hoang, T. Quynh Truong, Lagattu, F. and Brillaud, J., J Reinf Plas Compos. 29, 209 (2010).CrossRefGoogle Scholar
Das, K., Ray, , Adhikary, K., Bandyopadhyay, N.R., Mohanty, A.K. and Misra, M., J Reinf Plas Compos. 29, 510 (2009).CrossRefGoogle Scholar
Ashori, A. and Nourbaksh, A., Waste Management. 30, 680 (2010).CrossRefGoogle Scholar
Cui, Y.H., Tao, J., Noruziaan, B., Cheung, M. and Lee, S., J Reinf Plas Compos. 29, 278 (2010).CrossRefGoogle Scholar
Ismail, H and Kheong, O.W., J Reinf Plas Compos. 27, 1649 (2008).CrossRefGoogle Scholar
Valerio-Cardenas, C., Romo-Uribe, A., Cruz-Silva, R., Rejon, L and Saldivar-Guerrero, R., Emerging Materials Research, 1, 39 (2011).CrossRefGoogle Scholar
Ashori, A. and Nourbakhsh, A., Waste Management. 29, 1291 (2009).CrossRefGoogle Scholar
Romo-Uribe, A. and Yao, H.F., presented at the ACS 242nd National Meeting, Division of Polymeric Materials: Science and Engineering, Denver, Colorado, USA, 2011, (in the press).Google Scholar
Sanchez-Cadena, L., Alvarado-Tenorio, B., Romo-Uribe, A., Campillo, B., Flores, O., J. Reinf Plas. Compos. (2013), (in the press).Google Scholar
Romo-Uribe, A., Alvarado-Tenorio, B. and Romero-Guzmán, M.E., Matter. Rev. LatinAm. Metal. Mat. 30, 190 (2010).Google Scholar