ABC miktoarm star terpolymer

Blending of ABC Miktoarm-Star Terpolymers with AB-Diblock Copolymers... 

Dumas et al.124 125 have developed a procedure for the synthesis of ABC miktoarm star terpolymers containing amphiphilic branches. Styrene was polymerized in THF at —78 °C using cumylpotassium as initiator. The living chains were then reacted with 1 - [4- (2 - tcrt- b i ityld imethylsiloxy) ethyl] phenyl-1 -phen-ylethylene, as illustrated in Scheme 52. The living center was then used to initiate the polymerization... 

Junnila S, Houhenov N, Hanski S, latrou H, Hirao A, Hadjichristidis N, Ikkala O (2010) Hierarchical smectic self-assembly of an ABC miktoarm star terpolymer with a helical polypeptide arm. Macromolecules 43 9071-9076... 

Figure 21 Schematic illustrations for pH- and thermo-induced supramolecular self-assembly of (PEO)(PDEAEMA)(PNIPAM) ABC miktoarm star terpolymers into two types of micellar aggregates possessing hybrid coronas in aqueous solution. Reprinted from Zhang, Y. Liu, H. Hu, J. et at.

The assembly of ABC miktoarm stars can yield nanostmc-tures with complex multicompartment cores and also interesting properties. The potential for the assembly of ABC miktoarm star terpolymers to yield complex nanostmctures with interesting morphologies has both been demonstrated through simulation and experimental studies. 

H. Durmaz, F. Karatas, U. Tunca, G. Hizal, Preparation of ABC miktoarm star terpolymer containing polyjethylene glycol), polystyrene and polyjtert butacrylate) arms by combining Diels-Alder reaction, ATR and SFRP routes,/. Polym. Sci., Part A Polym. Chem. 2006, 44, 499-509. 

Saito N, Liu C, Lodge TP, Hillmyer MA (2008) Multicompartment micelles from polyester-containing ABC miktoarm star terpolymers. Macromolecules 41 8815-8822... 

Durmaz, H., Kaiatas, F., Tunca, U., and Hizal, G. (2(X)6b) Preparation of ABC miktoarm star terpolymer containing polyfethylene glycol), polystyrene, and poly(tert-butylacrylate) arms by combining Diels-Alder reaction, atom transfer radical, and stable free radical polymerization routes. Journal of Polymer Science Part A-Polymer Chemistry, 44,499. 

Liu, H., Li, C., Liu, H., and Liu, S. (2009b) pH-Responsive supramolecular self-assembly of well-defined zwitterionic ABC miktoarm star terpolymers. Langmuir, 25,4724-4734. 

Figure 18.14 (a) The molecular packing of an ABC miktoarm star terpolymer with the junctions on... 

An ABC miktoarm star terpolymer has a configuration of a C polymer grafted at the junction point of an AB diblock copolymer as depicted in Figure 18.1c, and hereafter we call it p-ABC. Since it is not necessary to account for the order of the sequences of A, B and C blocks in a p-ABC, ithas fewer variables to designate the system than a linear ABC. However, because of the unusual molecular architecture of a p-ABC whose three different block chains possess the same junction, the microdomain morphologies it can take become quite different from those of a linear ABC when they microphase-separate into three phases. (In this chapter, we only consider the three-phase structures.) Three microphases of a p-ABC must meet in space to... 

Li, Z.B., HiUmyer, M.A., and Lodge, TP. (2006b) Morphologies of multicompartment micelles formed by ABC miktoarm star terpolymers. Langmuir, 22,9409-9417. 

Here, fp and fg are the volume fractions of ABC-miktoarm star terpolymer and solvent in the system, respectively, and... 

It indicates the existence of localization behavior of junction points in the ABC miktoarm star terpolymer system. By keeping each block length unchangeable (N = Ag = = 10. 

Wang L, Xu R, Wang ZL, He XH. Kinetics of multicompart-ment miceUes formation by self-assembly of ABC miktoarm star terpolymer in dilute solution. Soft Matter 2012 8 11462. 

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