Reconciling STEM and SAXS for Ionomer Morphologies

同分异构体是随机共聚物，大多数是非极性单体单元和少数极性单体单元（~5-10摩尔%），通常是酸。酸基团可以与阳离子部分或完全中和，以产生自组装形成离子纳米聚集体的离子种类。除了它们目前的工业兴趣，如耐化学热塑性塑料，坚韧涂层，燃料电池的超选择性膜和食品包装材料，各种新技术都被设想。Wineys对这些材料的研究重点是使用先进的电子显微镜方法对离子聚集体进行直接成像，从而为合成、加工、形态和许多物理性质之间的相互关系提供重要的见解。该研究的重点是寻求扫描透射电子显微镜（STEM）收集的真实空间图像与小角度x射线散射（SAXS）收集的互反空间模式之间的调和。将采用模型材料。拟议的研究分为三个部分：进一步改进STEM和SAXS技术。用过渡金属中和的聚苯乙烯-反甲基丙烯酸共聚物和用过渡金属中和的聚乙烯-反甲基丙烯酸共聚物。离聚体是一类塑料，目前被用作耐化学塑料，坚韧涂层（高尔夫球）燃料电池的透选膜和食品包装材料，以及各种新技术，例如，防止化学战。为这些应用设计更好的离聚体需要了解结构、处理和属性的相互依赖关系。Winey正在使用先进的选择性显微镜和标准的x射线散射工具来表征离聚体的纳米级结构。工业、学术和军事科学家对Wineys调和来自离聚体的显微镜和散射数据的努力特别感兴趣，因为在成功调和的情况下，更广泛的社区随后可以放心地依赖更快的散射方法。提供这些信息将使科学家和工程师能够更好地建立相互依赖关系并设计改进的材料。Winey将继续接受鼓励女性参与科学和工程的演讲邀请。

Isonomers are random copolymers with a majority of non=polar monomeric units and a minority (~5-10 mol%) of polar monomeric units, typically acids. The acid groups can be partially or fully neutralized with cations to create ionic species that self assemble to form ionic nanoaggregates. In addition to their current industrial interest as chemically resistant thermoplastics, tough coatings, permselective membranes for fuel cells, and food packaging materials, a variety of new technologies are envisioned. Wineys work with these materials focused on directly imaging the ionic aggregates using advanced electron microscopy methods, so as to provide vital insight to the interrelationships between synthesis, processing, morphology and numerous physical properties. The focus of the proposed research is to seek reconciliation between real space images collected by scanning transmission electron microscopy (STEM) and reciprocal space patterns collected by small angle x-ray scattering (SAXS). Model materials will be employed. The proposed research is divided into three segments: further STEM and SAXS technique refinements. Poly(styrene-ran-methacrylic acid) copolymers neutralized with transition metals, and poly(ethylene-ran-methacrylic acid) copolymers neutralized with transition metals.%%%Ionomers are a class of plastics that are currently used as chemically resistant plastics, tough coatings (golf balls) permselective membranes for fuel cells, and food packaging materials, and a variety of new technologies are envisioned, e.g., protection against chemical warfare. Designing better ionomers for these applications requires understanding the interdependencies of structure, processing, and properties. Winey is characterizing the nanoscale structure of ionomers using advanced election microscopy and standard x-ray scattering tools. Industrial , academic and military scientists have a particular interest in Wineys efforts to reconcile microscopy and scattering data from ionomers, because in instances of successful reconciliation the wider community can subsequently rely on the faster scattering method with confidence. Providing this information will enable scientists and engineers to better establish the interdependencies and design improved materials. Winey will continue to accept speaking engagements that encourage the participation of women in science and engineering.