Impact properties of thiol-ene networks

ACS Appl Mater Interfaces. 2013 Nov 13;5(21):11004-13. doi: 10.1021/am403238g. Epub 2013 Oct 31.

Abstract

In this study, a series of thiol-ene networks having glass transition temperatures ranging from -30 to 60 °C were synthesized utilizing several multifunctional thiols and two trifunctional alkenes. Thermomechanical properties were determined using dynamic mechanical analysis, and impact properties were determined using pendulum impact and drop impact testing protocols. The impact behavior was found to directly correlate to the glass transition temperature, except when the temperature at which the impact event occurs overlaps with the range of temperatures corresponding to the viscoelastic dissipation regime of the polymer. Additionally, we discuss insight into the spatial limitations of energy dissipation for thiol-ene network polymers and establish a platform for predictability in similar systems.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Elasticity
  • Glass / chemistry*
  • Polymers / chemistry*
  • Stress, Mechanical
  • Sulfhydryl Compounds / chemistry*
  • Temperature
  • Transition Temperature

Substances

  • Polymers
  • Sulfhydryl Compounds