SC—CO2中聚氨酯吸附樟脑的研究
Studies of Polyurethane Adsorbing Camphor in Supercritical Carbon Dioxide
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摘要: 研究了在SC-CO2中不同聚合物对樟脑的吸附,发现聚氨酯、乙烯-醋酸乙烯酯共聚物等非晶型和高分子的吸附效果优于聚乙烯等结晶型高分子。继而以聚氨酯为对象,分别讨论了实验温度、压力、吸附时间和不同共溶剂分子对其吸附结果的影响,结果表明,实验温度越高,吸附时间越长,则聚氨酯对樟脑的吸附量越大。当吸附时间相同,吸附量随压力增先增后减,在临界压附近会出现一级大值,在共溶剂的使用中,醇类分子比酮类和胺类分子能更大地提高聚氨酯的对樟脑的吸附量。Abstract: In this paper, camphor molecules were impregnated respectively into different polymers in supercritical carbon dioxide. The results show that polyurethane, ethylene vinyl acetate copolymer and acrylonitrile butadiene styrene terpolymer adsorbed more c