Engineering Research Equipment: Dynamic Mechanical Analyzers

PI建议购买流变学动态分析仪(RDA)，用于在严格控制的条件下测量流体的稳定和振荡粘度等力学性质，以及购买流变学固体分析仪(RSA)，用于测量固体力学性质，如静态和振荡的弹性和膨胀模数。该仪器将用于几个研究项目。利用RSA，将研究中空纤维膜的力学性能和传输性能之间的耦合，水凝胶的机械强度将被表征为引发剂和交联剂的函数，并将考察吸附气体作为聚合物增塑剂的作用。RDA将用于研究离子聚集对液晶聚合物动态粘度的影响以及测量树脂固化过程中的粘度。购买流变仪将对几个研究小组产生重大影响。水凝胶用于药物控释的研究是一个特别新颖和有前途的想法。RSA Will仪器对于表征水凝胶的强度肯定是必要的，而这一信息对于进一步的技术开发也是必要的。

The PI proposes purchasing a Rheometrics Dynamic Analyzer (RDA) for the measurement of fluids mechanical properties such as steady and oscillatory viscosity under carefully controlled conditions, and a Rheometries Solids Analyzer (RSA) for the measurement of solid mechanical properties such as static and oscillatory elastic and dilatational moduli. The instrument will be used in several research programs. With the RSA, the coupling between the mechanical and transport properties of hollow fiber membranes will be investigated, the mechanical strengths of hydrogels will be characterized as a function of initiator and crosslinking, and the effect of sorbed gas as a polymer plasticizer will be investigated. The RDA will be used for studying the effect of ionic aggregation on the dynamic viscosity of liquid crystalline polymers and in measuring viscosities in resin cure. The purchase of the rheometers will have a significant impact on several research groups. The research on hydrogels for controlled drug delivery is a particularly novel and promising idea. The RSA will instrument will certainly be necessary for characterizing the strength of the hydrogels, and this information will be necessary for further technological development.