6533b82dfe1ef96bd1291cf3

RESEARCH PRODUCT

Order-disorder-and order-order-transitions in AB and ABC block copolymers: description by a simple model

Ludwik LeiblerVolker AbetzReimund Stadler

subject

SpinodalMaterials sciencePolymers and PlasticsValue (computer science)ThermodynamicsGeneral ChemistryState (functional analysis)Condensed Matter PhysicsSimple (abstract algebra)Materials ChemistryCopolymerOrder (group theory)Random phase approximationPhase diagram

description

Based on the description of AB-block copolymers as micellar structures given by Semenov, the phase diagram of AB-diblock copolymers is calculated taking the homogeneously mixed system as a reference state. The predicted value (χN)c = 10.385 for a symmetric AB-diblock copolymer compares very well to the result of the original Random Phase Approximation theory (10.495). The simplicity of the model allows its extension to predict order-order transitions in ABC-triblock copolymers.

https://doi.org/10.1007/bf00313829