Light Scattering in Complex Ternary Polymer Solutions US-Turkey Cooperative Research

复杂三元聚合物溶液中的光散射 美国-土耳其合作研究

• 批准号: 9512700
• 负责人: Paul Russo
• 金额: $ 3.04万
• 依托单位: Louisiana State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-15 至 1998-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9512700&HistoricalAwards=false
• 关键词: Light; Scattering; Complex; Ternary; Polymer

Description: This project supports a collaboration by Dr. Paul S. Russo, of the Chemistry Department at Louisiana State University (LSU) and Dr. Zuhal Kucukyavuz and Dr. Savas Kucukyavuz of the Chemistry Department at the Middle East Technical University (METU) in Ankara, Turkey. In this collaboration they will study the phase stability and dynamics of ternary polymer solutions. The specific classes to be investigated will be systems where rigid rodlike polymers and flexible polymers are mixed together in a common solvent. Such systems represent precursors to molecular composites wherein a random coil polymer is strengthened by the fibrous, rodlike polymer. Light scattering studies will be conducted on specially selected prototype systems, with special attention given to `fuzzy rods` made from polypeptides with long alkyl sidechains. The long sidechains impart good stability to the fuzzy rods, which will be studied in tetrahydrofuran when they scatter strongly. The random coil component will be polydimethysiloxanes, which scatters only weakly in tetrahydrofuran. Polydimethylsiloxanes will be prepared and characterized at the METU in Ankara. Light scattering measurements will be performed at LSU in Baton Rouge. Scope : The collaboration to be supported in this project is useful to the US and to Turkey because it allows the two scientists to use their complementary capabilities to enhance the effectiveness of their research. Dr. Russo is currently supported by NSF's Division of Material Research for the primary research. The funds provided by INT will be used for the incremental costs resulting from the collaboration.

描述：该项目支持由保罗·S。路易斯安那州立大学（LSU）化学系的Russo博士和土耳其安卡拉中东技术大学（METU）化学系的Zuhal Kucukyavuz博士和Savas Kucukyavuz博士。 在这次合作中，他们将研究三元聚合物溶液的相稳定性和动力学。 要研究的具体类别将是刚性棒状聚合物和柔性聚合物在共同溶剂中混合在一起的系统。 此类体系代表分子复合材料的前体，其中无规卷曲聚合物被纤维状棒状聚合物增强。 将在特别选定的原型系统上进行光散射研究，特别注意由具有长烷基侧链的多肽制成的“模糊棒”。 长的侧链赋予良好的稳定性的模糊棒，这将是研究在四氢呋喃时，他们强烈散射。 无规卷曲组分将是聚二甲基硅氧烷，其在四氢呋喃中仅微弱地散射。 聚二甲基硅氧烷将在安卡拉的METU制备和表征。 将在巴吞鲁日的LSU进行光散射测量。 适用范围：该项目中支持的合作对美国和土耳其都很有用，因为它允许两位科学家利用他们的互补能力来提高他们的研究效率。 Russo博士目前由NSF材料研究部门支持进行初步研究。 INT提供的资金将用于合作产生的增量成本。