MRI Track 1: Acquisition of Differential Scanning Calorimeter (DSC)

MRI 轨道 1：差示扫描量热计 (DSC) 的获取

• 批准号: 1337137
• 负责人: Isaac VonRue
• 金额: $ 8.78万
• 依托单位: King's College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-10-01 至 2016-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1337137&HistoricalAwards=false
• 关键词: MRI; Track; Acquisition; Differential; Scanning

With this award from the Chemistry Major Research Instrumentation Program, Professor Isaac VonRue from King's College and colleagues Julie Belanger, Karen Vavrek, Ronald Supkowski and Trent Snider will acquire a differential scanning calorimeter (DSC). The proposal is aimed at enhancing research and education at all levels, especially in areas such as (a) polymer science for polymer characterization to investigate thermoreversible gelation and measure glass transition and melting temperatures of new polymers; (b) biochemistry for characterization of new lipids and liposomes; and (c) silica characterization for catalyst science to study water molecules that are chemically and physically attached to the surface.The DSC instrument allows the measurement of the difference in the amount of heat required to increase the temperature of a sample and reference as a function of temperature. This technique provides information on the chemical composition of various materials. The basic principle for this technique is that when a sample undergoes a physical transformation such as melting or freezing more or less heat will need to flow to it than the reference to maintain both at the same temperature. Whether less or more heat must flow to the sample depends on whether the process releases or needs heat (exothermic or endothermic processes, respectively). The instrument measures the heat flux versus temperature or versus time. This information can be used to calculate enthalpies of the processes. The instrumentation will be used not only in research but also in research training and teaching of undergraduate students.

国王学院的Isaac VonRue教授及其同事Julie Belanger， Karen Vavrek， Ronald Supkowski和Trent Snider将获得化学主要研究仪器项目的奖金，以获得差示扫描量热计（DSC）。该提案旨在加强各级的研究和教育，特别是在以下领域：(a)聚合物表征的聚合物科学，以研究热可逆凝胶化并测量新聚合物的玻璃化转变和熔化温度；(b)生物化学表征新的脂质和脂质体；(c)二氧化硅表征用于催化剂科学，研究化学和物理上附着在表面的水分子。DSC仪器允许测量增加样品和参考物温度所需的热量的差异，作为温度的函数。这项技术提供了各种材料化学成分的信息。该技术的基本原理是，当样品经历物理转变（如熔化或冻结）时，需要比参考物多或少的热量来保持两者在相同的温度。流向样品的热量是少还是多取决于过程是释放热量还是需要热量（分别是放热过程还是吸热过程）。该仪器测量热通量与温度或时间的关系。这个信息可以用来计算过程的焓。该仪器不仅可用于科研，还可用于本科生的科研训练和教学。