The self-assembly of amphiphilic graft copolymers is generally reported for polymer melts or polymers deposited onto surfaces, while a small number of cases deal with binary mixtures with water. We report on the associative properties of poly(ethylene glycol)-graft-poly(vinyl acetate) (PEG-g-PVAc) comb-like copolymers in water, demonstrating the existence of a percolative behaviour when increasing the PEG-g-PVAc content. Rheology, light- and small-angle X-ray scattering experiments, together with dissipative particle dynamics simulations, reveal a progressive transition from spherical polymer single-chain nanoparticles (SCNPs) towards hierarchically complex structures as the weight fraction of the polymer in water increases. The ability of PEG-g-PVAc to attain different nano- and microstructures is of great importance in numerous applications such as in the fields of cosmetics, detergency and drug delivery.

Associative properties of poly(ethylene glycol)-poly(vinyl acetate) comb-like graft copolymers in water / Mamusa M.; Tempesti P.; Bartolini A.; Carretti E.; Ghobadi A.F.; Smets J.; Aouad Y.G.; Baglioni P.. - In: NANOSCALE. - ISSN 2040-3364. - ELETTRONICO. - 11:(2019), pp. 6635-6643. [10.1039/c8nr10453k]

Associative properties of poly(ethylene glycol)-poly(vinyl acetate) comb-like graft copolymers in water

Tempesti P.;Bartolini A.
Membro del Collaboration Group
;
Carretti E.;Baglioni P.
2019

Abstract

The self-assembly of amphiphilic graft copolymers is generally reported for polymer melts or polymers deposited onto surfaces, while a small number of cases deal with binary mixtures with water. We report on the associative properties of poly(ethylene glycol)-graft-poly(vinyl acetate) (PEG-g-PVAc) comb-like copolymers in water, demonstrating the existence of a percolative behaviour when increasing the PEG-g-PVAc content. Rheology, light- and small-angle X-ray scattering experiments, together with dissipative particle dynamics simulations, reveal a progressive transition from spherical polymer single-chain nanoparticles (SCNPs) towards hierarchically complex structures as the weight fraction of the polymer in water increases. The ability of PEG-g-PVAc to attain different nano- and microstructures is of great importance in numerous applications such as in the fields of cosmetics, detergency and drug delivery.
2019
11
6635
6643
Goal 9: Industry, Innovation, and Infrastructure
Mamusa M.; Tempesti P.; Bartolini A.; Carretti E.; Ghobadi A.F.; Smets J.; Aouad Y.G.; Baglioni P.
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1161838
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