Synthesis And Characterization Of Poly (1,3-dioxolane) And Its Copolymers : Study Of Their Compatibilizing Effect On Immiscible Blends
Résumé: The central point of this thesis is the synthesis and the exploration of the benefits of graft copolymers derived from poly (1, 3 dioxolane) (PDXL) as compatibilizing agents via their incorporation in immiscible polymer blends. The enhancement of adhesion in the solid state can be accomplished by introducing a compatibilizer that can act as an adhesive between two polymers, and/or by control of morphology, especially by inducing the phase co-continuity. Graft copolymers offer all Properties of block copolymers but are usually easier to synthesize. Moreover, the branched structure offers important possibilities of rheological control, i. e. it leads to decreased melt viscosities which is an important advantage for processing. Depending on the nature of their backbone and side chains, they can be used for a wide variety of applications, such as impact-resistant plastics, thermoplastic elastomers, polymeric emulsifiers and even more exciting is the ability of these graft copolymers to function as compatibilizers/interfacial agents to blends immiscible polymers.
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