Skip to main content

Characterizing blends of linear low-density and low-density polyethylene by DSC

Summary

A two-step isothermal annealing (TSIA) procedure is described that enables the endothermic peaks of low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE) and their blends, to be satisfactorily resolved during analysis by differential scanning calorimetry. A modified form of multistep isothermal annealing, the TSIA procedure produces a highly characteristic profile of the blend components by facilitating the segregation of the phases based on branch density. It is proposed that the TSIA procedure may have significant merit in the identification and quantification of the components in an unknown blend as well as increasing the sensitivity in analytical procedures aimed at blend component quantification.

This is a preview of subscription content, access via your institution.

Author information

Affiliations

Authors

Corresponding author

Correspondence to M. J. Cran.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Cran, M., Bigger, S. & Scheirs, J. Characterizing blends of linear low-density and low-density polyethylene by DSC. J Therm Anal Calorim 81, 321–327 (2005). https://doi.org/10.1007/s10973-005-0786-3

Download citation

  • DSC
  • LLDPE
  • thermal fractionation
  • LDPE
  • polyethylene blends