The strain recovery of three syndiotactic polypropylenes (s-PPs) differing in the percentage of [rrrr] pentad is investigated. A suitable method based on loading–unloading tests at constant displacement rate in tensile loading conditions is adopted to measure the residual and recovered strain components of the applied strain. The method allows to obtain a large amount of data from few tests and to explore a wide strain range. The dependence of the material’s strain recovery on the applied strain is analyzed in relation to s-PP strain induced microstructural changes and crystalline form transitions, which are reported in literature.

A study of the yield and post-yield behavior of syndiotactic polypropylene

MARANO, CLAUDIA;PERILLO, NADIA;RINK SUGAR, MARTA ELISABETH
2014

Abstract

The strain recovery of three syndiotactic polypropylenes (s-PPs) differing in the percentage of [rrrr] pentad is investigated. A suitable method based on loading–unloading tests at constant displacement rate in tensile loading conditions is adopted to measure the residual and recovered strain components of the applied strain. The method allows to obtain a large amount of data from few tests and to explore a wide strain range. The dependence of the material’s strain recovery on the applied strain is analyzed in relation to s-PP strain induced microstructural changes and crystalline form transitions, which are reported in literature.
File in questo prodotto:
File Dimensione Formato  
A Study of the Yield and Post-Yield Behavior of Syndiotactic Polypropylene_11311-909956_Marano.pdf

accesso aperto

: Post-Print (DRAFT o Author’s Accepted Manuscript-AAM)
Dimensione 496.15 kB
Formato Adobe PDF
496.15 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/909956
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? 0
social impact