Phase equilibrium and viscosity of polymer solutions in the presence of high pressure gases

聚合物中气体的溶解性和差异性是聚合物生产植物的开发和过程控制的重要特性。高压力和温度下的气体溶解性和差异性需要生产聚合物食物，在这项工作中，其溶解性和后续系统的差异性已被调查。溶解性和差异性：气体：C 0-D22-D2聚合物：聚苯乙烯，聚乙烯，高密度聚乙烯，聚乙烯（丁二烯糖），聚乙烯（butylene succinate-共-adipate）， poly（vinyl acetate）Gas：N-D22-D2 Polymer： polystyrene， polypropylene， high-density polyethyleneSolubility ：Gas ：HCFC-142 b，HFC-134 a，HFC-152 aPolymer：polystyrene These systems were expected as new polymeric foam materials， since CFC（chlorofluorocarbons） as conventional physical blowing agent were banned。根据Sanchez-Lacombe在与温度相关的相互作用参数结合时的状态平衡的实验结果。该交互参数是由适合的易度决定的，是相对于绝对温度的不合理的。《差异可能与自由卷理论相关》，Stern等人。

Solubility and diffusivity of gas in polymer are important properties for development and process control of polymer production plant. The gas solubility and diffusivity under high pressures and temperatures are needed for production of polymeric foams, In this work, the solubility and the diffusivity of following systems were investigated.Solubility and diffusivity:Gas : C0ィイD22ィエD2Polymer : polystyrene, polypropylene, high-density polyethylene, poly(butylene succinate), poly(butylene succinate-co-adipate), poly(vinyl acetate)Gas: NィイD22ィエD2Polymer : polystyrene, polypropylene, high-density polyethyleneSolubility :Gas : HCFC-142b, HFC-134a, HFC-152aPolymer : polystyreneThese systems were expected as new polymeric foam materials, since CFCs (chlorofluorocarbons) as conventional physical blowing agents were banned. Experimental results of the solubility were correlated by the Sanchez-Lacombe equation of state in conjunction with a temperature dependent interaction parameter. The interaction parameter determined from fitting the solubility was inversely proportional to absolute temperature. The diffusivities could be correlated with the free volume theory by Stern et al.