Architecture - behaviour - properties relationship in Star-shaped MPA-PMMA and MPA-PS hyper-branched copolymers
Gabriel Ríos Valer, Gisela Díaz, Juan M Giussi*, Marcelo Ceolín
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA) - Departamento de Química - Facultad de Ciencias Exactas - Universidad Nacional de La Plata - CONICET, 1900 La Plata - Argentina
DOI: 10.5185/amlett.2019.2224
Publication Date (Web): Jan 14, 2019
Copyright © 2018 VBRI Press
E-mail: jmgiussi@inifta.unlp.edu.ar
The molecular architecture of polymers is a crucial feature in the moment of think the relationship between properties and applications. 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 (Hydroxyl-Methyl) 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 have been prepared, and moreover different levels of branching of each polymer were prepared. The synthesised star PMPA-PMMA 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 the thermal stability was evaluated by thermogravimetric analysis. Finally, solution properties have been evaluated thought Dynamic Light Scattering. Our results, obtained by a meticulous and systematic comparative study, showed a clear tendency between architectural level and thermal properties. Moreover, properties in solution revealed interesting response due to the modification of solvent nature.
Star-shaped hyperbranched copolymers with different generation levels, thermal characterization, solution properties.
9th Anniversary of Advanced Materials Letters: Progress and Opportunities
Coating - A potent method to enhance electrochemical performance of Li(NixMnyCoz)O2 cathodes for Li-ion batteries
Analysis of machined electron beam treated Ti6Al4V-ELI implant surfaces
Bottom-up design of hydrogels through click-chemistry modification of magnetic nanoparticles
Visualization of mechanical loads with semiconductor nanocrystals
Room temperature growth of ultra porous hot-wire deposited tantalum pentoxide
Substrate integrated circular cavity resonator filled with nano-fibrillated cellulose for humidity detection
Oxygen vacancy filament-based resistive switching in Hf0.5Zr0.5O2 thin films for non-volatile memory
Innovative silicon compatible materials for light emitting devices
Graphene micromesh for transparent conductive films application
Applications of nano-scale Cirrus DopantTM to improve existing coatings
Chitin nanofibrils in renewable materials for packaging and personal care applications
Synthesis of AgNPs embedded double network nanocomposite hydrogels having high swelling and anti-bacterial characteristics
Artificial intelligence and machine learning empowering the mass medicine
Piezo-therapy in cancer: Current research and perspectives
Magnetic microwires for sensor applications
A fundamental study on the mechanistic impact of repeated de- and rehydration of Ca(OH)2 on thermochemical cycling in technical scale
Fabrication and characterization of nano-bridge Josephson junction based on Fe0.94Te0.45Se0.55 thin film
Riboflavin-UVA gelatin crosslinking: Design of a biocompatible and thermo-responsive biomaterial with enhanced mechanical properties for tissue engineering
Broadband and fast photodetectors based on multilayer p-MoTe2/n-WS2 heterojunction with graphene electrodes
Ionic liquid [BMIM][Cl] immobilized on cellulose fibers from pineapple leaves for desulphurization of fuels
Synthesis and role of co-dopants (alkaline earth divalents and halides) on the photoluminescence of Eu2+ doped BaAl2O4 phosphor
Metal oxide (V2O5) incorporated fly ash based geopolymer for better sustainable engineering composites
Highly efficient storage of solar gains using aluminum foam heat exchangers
Green fabrication of zinc oxide nanospheres by aspidopterys cordata for effective antioxidant and antibacterial activity
Effect of diamantane on the thermal stability of cryomilled aluminum alloy
Copyright ©2010-2019 VBRI Press
Full Article