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

凭借化学专业研究仪器计划的这一奖项，国王学院的Isaac VonRue教授和同事Julie Belanger，Karen Vavrek，罗纳德Supkowski和Trent Snider将获得差示扫描量热仪（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）聚合物科学，用于聚合物特性分析，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，用于新脂质和脂质体特性分析;以及（c）用于催化剂科学的二氧化硅表征，以研究化学和物理附着在表面的水分子。DSC仪器可以测量增加样品和参比品温度所需的热量，作为温度的函数。这项技术提供了各种材料的化学成分信息。这种技术的基本原理是，当样品经历物理转变（如熔化或冻结）时，与参考样品相比，需要更多或更少的热量流向样品，以保持两者处于相同的温度。是否有更多或更少的热量必须流向样品取决于该过程是否释放或需要热量（分别为放热或吸热过程）。 该仪器测量热通量与温度或时间的关系。 该信息可用于计算进程的时间间隔。该仪器不仅用于研究，而且用于研究培训和本科生教学。

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.