论文标题
ATRP增强了聚合引起的相分离的结构相关性
ATRP enhances structural correlations in polymerization-induced phase separation
论文作者
论文摘要
在亚微米尺度上控制材料结构的合成方法通常基于具有精确尺寸和形态的结构构建块的自组装。另一方面，许多生活系统都可以使用相位分离直接从大分子中从大分子中的一步中产生结构。在这里，我们通过固态的聚合在纳米和显微镜下介绍和控制结构，这具有触发和阻止相分离的异常能力。特别是，我们表明原子转移自由基聚合（ATRP）可以控制固体聚苯乙烯（PS）基质中相分离的聚甲基丙烯酸酯（PMMA）结构域的成核，生长和稳定。 ATRP产生耐用的纳米结构，具有低尺寸分散性和高度的结构相关性。此外，我们证明了这些材料的长度尺度由合成参数控制。
Synthetic methods to control the structure of materials at sub-micron scales are typically based on the self-assembly of structural building blocks with precise size and morphology. On the other hand, many living systems can generate structure across a broad range of length scales in one step directly from macromolecules, using phase separation. Here, we introduce and control structure at the nano- and microscales through polymerization in the solid state, which has the unusual capability of both triggering and arresting phase separation. In particular, we show that atom transfer radical polymerization (ATRP) enables control of nucleation, growth, and stabilization of phase-separated poly-methylmethacrylate (PMMA) domains in a solid polystyrene (PS) matrix. ATRP yields durable nanostructures with low size dispersity and high degrees of structural correlations. Furthermore, we demonstrate that the length scale of these materials is controlled by the synthesis parameters.
