【摘 要】
：
Selective localization of the nanoparticles within different domains,such as cores,interfaces,and coronas,in block copolymers aggregates may critically affect their resulting properties and potential
【机 构】
：
Key Laboratory of High Performance Polymer Materials and Technology,Ministry of Education,Department
【出 处】
：
The 11th International Symposium on Polymer Physics(PP2014)(
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Selective localization of the nanoparticles within different domains,such as cores,interfaces,and coronas,in block copolymers aggregates may critically affect their resulting properties and potential applications of the nanoparticles.Therefore,many studies have focused on the selective localization of nanoparticles in block copolymers aggregates.In this paper,we implement dissipative particle dynamics(DPD)approach to investigated the selective localization of the nanoparticles within different domains of aggregates generated by the diblock copolymer tethered nanoparticle.By systematically varying the interaction parameters between the nanoparticle and the hydrophobic and hydrophilic blocks,the morphological phase diagram was obtained.The morphological diagram shows that the spherical micelles take shape with low interaction parameters and disk-like or rod-like micelles forms with large interaction parameters.Depending on the repulsive interaction between the nanoparticle and the hydrophobic block or the hydrophilic block,the nanoparticles localize within different domains of the aggregates.The nanoparticles distribute uniformly within the spherical micelles as the interaction parameters are both low.With the increase of interaction parameter,the nanoparticles localize in the center portion of the vesicular membrane.Further increasing the interaction parameter,the aggregate transforms from spherical micelles to disk-like to rod-like micelles and the nanoparticles localize in the interior portion of the aggregates(Figure 1).These simulation findings are consistent with the experimental observations.[1-3] Moreover,we also elucidate the morphological transition of the aggregates using the free energy model.[4] The interfacial free energy and packing free energy mainly control the morphological transition of the aggregates in our simulation system.
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