Architecture - Behaviour - Properties Relationship In Star-Shaped MPA-PMMA And MPA-PS Hyper-Branched Copolymers

RIOS VALER, G.; CEOLÍN, M.; DIAZ,C.; GIUSSI, J.M.

Advanced Materials Letters

VBRI press

Año: 2019 vol. 10 p. 476 - 483

0976-3961

The molecular architecture of polymers is a crucial feature in the moment of think the relationship between properties andapplications. The same polymer can present important differences according to its architecture and leads to different possible applications. In this paper, we describe the well preparation of hyperbranched copolymers based on bis (HydroxylMethyl) propionic acid polyester (MPA). The co-monomers introduced via atom transfer radical polymerization were methyl methacrylate (MMA) and styrene (St). In order to study the effect of confinement, linear PMMA and PSt havebeen prepared, and moreover different levels of branching of each polymer were prepared. The synthesised star PMPAPMMA and PMPA-PSt copolymers have been characterized and identified by infrared spectroscopy and nuclear magnetic resonance spectroscopy. Thermal transitions in solid state were studied using differential scanning calorimetry, and thethermal stability was evaluated by thermogravimetric analysis. Finally, solution properties have been evaluated thoughtDynamic Light Scattering. Our results, obtained by a meticulous and systematic comparative study, showed a cleartendency between architectural level and thermal properties. Moreover, properties in solution revealed interesting responsedue to the modification of solvent nature.