Control and stabilization of morphologies in reactively compatibilized Polyamide 6 / High Density Polyethylene blends
type: Dataset
contact point: Organization
  fn: CCSD
keyword: morphologie
keyword: sdvaenlife-sciences-q-biofood-and-nutrition
keyword: polyamide
keyword: theses
keyword: extrusion
keyword: polymer-blend
keyword: melange-de-polymeres
keyword: reactive-compatibilization
keyword: infoeu-reposemanticsdoctoralthesis
keyword: polyethylene
keyword: compatibilisation-reactive
keyword: morphology
keyword: cristallisation
keyword: crystallization
landing page: https://theses.hal.science/tel-00835910
description: This study deals with reactively compatibilized Polyamide 6 / High Density Polyethylene blends. More precisely, it focuses on the relationship between (1) the formulation, the processing parameters in corotating twin screw extrusion and (2) the morphologies and the microstructures of blends. Multi-scale morphologies were observed by Scanning and Transmission Electron Microscopy. At the micron scale, the following morphologies were developed: nodular dispersions, stretched nodules and co-continuous morphology. As the processing conditions did not influence the types of morphology, the different morphological regions were reported in ternary diagrams. In the case of compatibilized blends, two mechanisms for morphology development have been proposed: (1) the compatibilization reaction, being very fast, leads to the formation of nano-dispersions by interfacial instabilities and (2) the standard break-up/coalescence mechanism of domains poor in copolymer could lead to the formation of morphologies up to the micron scale. Both the evolution of the largest size as a function of the composition and the distribution of sizes were modeled using percolation concepts. The stability of the morphologies was then studied either during static annealing or controlled shear or in a second step processing. The copolymer formed at the interface allows stabilizing the size of the morphologies. Finally, crystallization at lower temperature was observed by Differential Scanning Calorimetry when the polymers are confined in submicron domains.
identifier: NNT: 2011LYO10242
issued: 2026-05-10T16:03:38.258840
language: en
modified: 2026-05-10T16:03:38.258845

Control and stabilization of morphologies in reactively compatibilized Polyamide 6 / High Density Polyethylene blends
type: Distribution
access URL: https://theses.hal.science/tel-00835910
format: HTML
issued: 2026-05-10T16:03:38.263439
modified: 2026-05-10T16:03:38.239514

test_moissonnage_selune
type: Agent