Structural Feature and Internal Motion of Hyperbranching Cluster System with Low Polydispersity and Featured Pattern in Dilute Solutions

Abstract

This work reports the structural feature and internal motion of one novel hyperbranching cluster system in dilution solution. The cluster system is composed of HB-PS300-g-PtBA45 hypergraft copolymer chains with uniform subchain, high molar mass and low polydispersity (Mw=1.73×106 g/mol and ≈1.07), where HB-PS and PtBA represent hyperbranched polystyrene core and poly(tert-butyl polyacrylate) graft, respectively. In the selective solvent of PS blocks (cyclohexane, T¸=34.5 °C), the aggregation kinetics and structural feature are found to be precisely tunable for assembled clusters by the aggregation temperature (11 °C