Topic description
As part of a circular economy, it is essential to recycle plastic waste. Often, recycled polymers, once sorted and decontaminated, are mixed with polymers of the same chemical nature, aiming at generating blends of miscible polymers, with adequate properties.
However, in the case of polyethylene, which contributes to more than 30% of plastic waste, the use of polymer blends to reclaim the properties of the recycled material is far from an easy task.
Indeed, recycled polyethylene contains different grades (high-density, linear low-density, and low-density polyethylene among others) that are difficult to separate and are not miscible with one another.
The understanding and control of the properties of blends of polyethylene of different types are therefore essential if one wants to reclaim recycled polyethylene.
For that, theoretical and experimental studies on the rheology of polyethylene blends to access their miscibility as well as on the crystallization of their blends should be carried out.
Unfortunately, the existing results from the literature on the subject are still very contradictory. This project aims therefore at carrying out a fundamental study of the rheological behavior of polyethylene blends as well as of their crystallization under different processing conditions as a tool for controlling their morphology.
In the second step of the study, a relationship between the morphologies obtained and the mechanical properties of the blends will be established.
The obtained results will then be used as a tool to formulate blends based on recycled polyethylene. This thesis will be co-funded by Nova Chemicals and Canadian granting agencies.
Starting date
01-01
Funding category
Public / private mixed funding
Funding further details
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