Using anionic polymerization,the hairy nanoparticles can be synthesized in one pot by adding crosslinking agents and monomers after the linear chain polymerization.The arm length and size of hairy nanoparticles were characterized by gel permeation chromatography(GPC)and dynamic light scattering(DLS).Based on rheological tests,the relationship between the"core"volume fraction of nanoparticles with the same arm length and the relaxation behavior was studied.When the linear polymerization chain was moved to the hairy nanoparticles with the smaller"core",the kinetic behavior of the star-shaped polymer was shown,and the relaxation time of the end was increased from 0.005 s to 0.1 s.When the core volume fraction of the nanoparticle is φ=33.3％,the kinetic behavior of the colloidal particles is displayed,the end relaxation time diverges,and the modulus of the nanoparticle is increased by ten times compared with that of the hairy nanoparticle with a smaller core.
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维普
