Poly(propylene-co-1-pentene-co-1-heptene) terpolymers: Mechanical and rheological behavior Articles uri icon

authors

  • GARCIA PEÑAS, ALBERTO
  • GÓMEZ ELVIRA, JOSÉ MANUEL
  • LORENZO, V
  • Wilhelm, M.
  • PÉREZ, ERNESTO
  • CERRADA, MARÍA LUISA

publication date

  • November 2018

start page

  • 44

end page

  • 53

volume

  • 156

International Standard Serial Number (ISSN)

  • 0032-3861

Electronic International Standard Serial Number (EISSN)

  • 1873-2291

abstract

  • This work describes the important effects of microstructural features on crystalline structure, mechanical behavior and molten state response for poly (propylene-co-1-pentene-co-1-heptene) terpolymers. The study was carried out in a wide range of compositions, varying the 1-pentene/1-heptene ratio and the thermal history applied. Molecular features, as propylene sequences and compositional triads, allow predicting the material behavior. Moreover, rheological response has demonstrated the influence of molecular weight, comonomer content and short-chain branches on the properties. The flow activation energy can justify the importance of the material density over the whole spectrum of properties.

keywords

  • terpolymers; crystalline polymorphs; microstructure; rheological activation energy