气相色谱法测定聚氨酯泡沫塑料的热力学性质及溶解度参数

Determination of Thermodynamic Properties and Solubility Parameters of Polyurethane Foams by Gas Chromatography

聚氨酯泡沫塑料常用于从水溶液或气相中分离或富集有机物质和无机物质.本文用气相色谱法测定了某些溶质在气相与聚氨酯相间分配过程的焓变、熵变和自由能变.由获得的实验数据估算了聚醚型和聚酯型泡沫塑料的溶解度参数。这些对于进一步研究聚氨酯泡沫塑料的吸收性能和在分析化学中的富集是很有用的.

Polyurethane foams are frequently used for separation and preconcentration of organic and inorganic substances from aqueours solution or gas phase. In this paper, changes of enthalpies, entropies and free energies in the partition process for some solutes between gas phase and polyurethane phase were determined by gas chromatogtaphy. On the basis of the experimental data, solubility parameters for polyether and polyester foams were estimated. These may be useful in further study of the absorption behaviour of the polyurethane foam.