Thermal Analysis: Material Science Facilities for Undergraduate Teaching/Research in Chemistry and Physics

化学（12）本项目使用热分析仪器在化学和物理实验室开展材料科学实验，并在该领域进行本科生研究。 对于热分析，使用三种互补仪器（差示扫描量热仪（DSC）和热重分析/差示热分析（TGA/DTA）仪器，具有逸出气体分析功能，与专用FTIR光谱仪耦合）来表征固态材料，包括陶瓷和聚合物。实验改编自教育和研究文献。 在物理化学课程中，仪器用于测量聚氨酯的热性能，并确定蛋白质折叠的比热容和焓。在无机化学中，学生使用定义明确的钌卡宾络合物研究开环易位聚合（ROMP），并测量所得聚合物的热性能。在高级物理实验课程中，学生将通过DSC和TGA研究超导体YBa 2Cu 307-x中的正交-四方相转变和氧化学计量。在这种铜氧化物超导体中，转变温度是氧含量的敏感函数。第二个实验涉及C60相变的研究。这些仪器用于化学和物理系材料科学的本科研究。在化学中，热分析用于评估用于通过热膨胀形成磁性半导体纳米颗粒的前体。 还正在研究水在利用热分析将肽和蛋白质吸附到矿物表面中的作用。在物理学中，富勒烯和水泥基材料的性质正在研究中。

Chemistry (12) This project uses thermal analysis instruments to develop materials science experiments in chemistry and physics laboratories as well as to conduct undergraduate research in this area. For thermal analysis, three complementary instruments (a Differential Scanning Calorimeter (DSC) and a Thermogravimetric Analysis/Differential Thermal Analysis (TGA/DTA) instrument, with Evolved Gas Analysis capabilities, coupled to a dedicated FTIR spectrometer) are used to characterize solid state materials including ceramics and polymers. Experiments are adapted from both the educational and the research literature. In the physical chemistry course the instruments are used to measure the thermal properties of polyurethane and to determine the specific heat capacity and enthalpy of protein folding. In inorganic chemistry, students study Ring Opening Metathesis Polymerization (ROMP) using a well-defined ruthenium carbene complex, and measure the thermal properties of the resulting polymer. In an upper level physics laboratory course, students study the orthorhombic-totetragonal phase transition in the superconductor YBa2CU307-x by DSC and oxygen stoichiometry by TGA. The transition temperature is a sensitive function of oxygen content in this cuprate superconductor. A second experiment involves the study of the phase transition of C60. The instruments are used in undergraduate research in materials science in both the chemistry and the physics departments. In chemistry, thermal analysis is used to evaluate precursors used to form nanoparticles of magnetic semiconductors by thermolysis. The role of water in the adsorption of peptides and proteins to mineral surfaces using thermal analysis is also being studied. In physics, the properties of fullerenes and cement based materials are being investigated.