Abstract
We study the influence of reversible crosslinks on a polymer blend with the help of an extended self-consistent mean field theory. The systems consist of homopolymers of type A and B and copolymers of type AB. Copolymers AB are reversibly crosslinked with a crosslink strength z. The links include monomers of type A and B with weights ω A and ω B , respectively. Crosslinking of A and B polymers is prohibited. Without crosslinks the system shows a homogeneous phase, a lamellar phase, a hexagonal phase, and a fully demixed state. Setting \(\omega _{A} +\omega _{B} = 1\), we find that the total crosslink strength z and the crosslink asymmetry \(\varDelta \omega \equiv \omega _{A} -\omega _{B}\) has a distinct influence on the structure of the system. We show that the microstructure can be switched from a hexagonal to a lamellar structure by increasing z or Δ ω.
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Acknowledgements
This work was supported by DFG SPP 1259: “Intelligent Hydrogels. Modelling and simulation of hydrogel swelling under strong non-equilibrium conditions using the phase-field and phase-field crystal methods” and DFG SFB 840: “Von partikulären Nanosystemen zur Mesotechnologie”.
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Gruhn, T., Li, D., Emmerich, H. (2013). Calculating Structural Properties of Reversibly Crosslinked Polymer Systems Using Self-Consistent Field Theory. In: Sadowski, G., Richtering, W. (eds) Intelligent Hydrogels. Progress in Colloid and Polymer Science, vol 140. Springer, Cham. https://doi.org/10.1007/978-3-319-01683-2_18
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DOI: https://doi.org/10.1007/978-3-319-01683-2_18
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