Research output

Influence of catalytic systems on the synthesis of (dis)entangled UHMWPE and its implications on mechanical properties

Research output: ThesisDoctoral ThesisExternal

Associated researcher

Abstract

Two different catalysts (bis[N-(3-tert-butylsalicylidene)-pentafluoroanilinato] titanium (IV) dichloride and [1-(8-quinolyl)indenyl] chromium (III) dichloride catalysts) activated with aluminoxane based co-catalysts (MAO, PMAO, MMAO12 and MMAO3A) have been evaluated in the polymerisation of ethylene leading to UHMWPE having a reduced number of entanglements between the chains. The effect of a co-catalyst modifier (BHT) on the catalytic systems and the resulting polymers is also addressed. Both catalysts are capable to promote the synthesis of UHMWPE having a reduced amount of entanglements in the conditions used.
Uniaxial solid-state deformation of UHMWPE samples of different molar masses have been evaluated and related with the entanglement state of the polymers synthesised. A clear relationship between some mechanical properties and the molar mass/entanglement density of the polymers synthesised has been found.

    Research areas

  • UHMWPE, Disentangled, Polyethylene, catalysts, Co-catalyst, Modifier, BHT, FI, Polymerisation, Mechanical properties, Uniaxial deformation
View graph of relations

Details

Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • Department of Materials; Loughborough University
Thesis sponsors
  • Teijin Aramid B.V
Publication statusPublished - 2014
Externally publishedYes