Laboratory of Self-Organizing Soft Matter, Institute for Complex Molecular Systems, Eindhoven University of Technology, Post Office Box 513, 5600, MD, Eindhoven, The Netherlands.
Laboratory of Physical Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Post Office Box 513, 5600, MD, Eindhoven, The Netherlands.
Macromol Rapid Commun. 2018 Sep;39(17):e1700814. doi: 10.1002/marc.201700814. Epub 2018 Apr 10.
Complex coacervate core micelles (C3Ms) form upon complexation of oppositely charged copolymers. These co-assembled structures are widely investigated as promising building blocks for encapsulation, nanoparticle synthesis, multimodal imaging, and coating technology. Here, the impact on ice growth is investigated of C3Ms containing poly(vinyl alcohol), PVA, which is well known for its high ice recrystallization inhibition (IRI) activity. The PVA-based C3Ms are prepared upon co-assembly of poly(4-vinyl-N-methyl-pyridinium iodide) and poly(vinyl alcohol)-block-poly(acrylic acid). Their formation conditions, size, and performance as ice recrystallization inhibitors are studied. It is found that the C3Ms exhibit IRI activity at PVA monomer concentrations as low as 1 × 10 m. The IRI efficacy of PVA-C3Ms is similar to that of linear PVA and PVA graft polymers, underlining the influence of vinyl alcohol monomer concentration rather than polymer architecture.
复杂凝聚核心胶束（C3Ms）在带有相反电荷的共聚物复合时形成。这些共组装结构被广泛研究作为封装、纳米粒子合成、多模态成像和涂层技术的有前途的构建块。在这里，研究了含有聚乙烯醇（PVA）的 C3Ms 对冰生长的影响，PVA 因其高的冰再结晶抑制（IRI）活性而广为人知。基于 PVA 的 C3Ms 通过聚 4-乙烯基-N-甲基-碘化吡啶和聚乙烯醇-嵌段-聚丙烯酸的共组装制备。研究了它们的形成条件、尺寸和作为冰再结晶抑制剂的性能。结果发现，C3Ms 在 PVA 单体浓度低至 1×10 m 时表现出 IRI 活性。PVA-C3Ms 的 IRI 功效与线性 PVA 和 PVA 接枝聚合物相似，这强调了影响的是聚乙烯醇单体浓度而不是聚合物结构。
