Acquisition of a Thermal Analysis System for Materials Characterization

化学研究仪器和设施(CRIF)计划的这一奖项将使俄勒冈大学化学系获得计算机控制的热分析系统。该系统包括调制差示扫描量热仪、与质谱仪耦合的热重分析和带有数据分析软件的中央计算机控制器。该仪器将用于涉及聚合物材料和固态结构的广泛研究领域，包括：富碳聚合物的形成、可光降解聚合物的转化、溶胶-凝胶前体向结晶固体的演化、纳米晶体和非天然晶体形态的生产，以及固态反应以产生动力学控制的产品。差示扫描量热仪(DSC)是一种热分析技术，它测量有机、无机和聚合物材料的转变过程中的温度和热流随时间和温度的变化。获得的数据提供了有关物理化学变化的定性和定量信息，这些变化涉及放热或吸热过程，或热容量的变化。

This award from the Chemistry Research Instrumentation and Facilities (CRIF) Program will enable the Department of Chemistry at the University of Oregon to acquire a computer-controlled thermal analysis system. The system includes modulated differential scanning calorimetry, thermogravimetric analysis coupled to a mass spectrometer and a central computer controller with data analysis software. The instrument will be used in a wide range of research areas involving polymeric materials and solid state structures including: formation of carbon-rich polymers, transformations in photodegradable polymers, evolution of sol-gel precursors to crystalline solids, production of nanocrystals and of `unnatural` crystal morphologies, and reactions in the solid state to produce kinetic-controlled products. Differential scanning calorimetry (DSC) is a thermal analysis technique which measures the temperatures and heat flows associated with transitions in organic, inorganic and polymeric materials as a function of time and temperature. The data obtained provide qualitative and quantitative information on physiochemical changes that involve exothermic or endothermic processes, or changes in heat capacity.