摘要
研究了超临界CO2 中降压时间以及小分子的溶度参数、亲电性和芳香性等因素对聚氨酯吸附小分子的影响,考察了小分子比蒸发速率对小分子在聚氨酯中解吸的影响.结果表明聚氨酯易于吸附亲电性试剂和多数芳香族小分子.
A systematic study about the absorption of small molecules into polyurethane was undertaken in supercritical carbon dioxide. Changes in mass of PU were given in terms of the changes of factors such as decompression time,solubility parameter,electrophilic and aromatic character of small molecules. The effect of specific evaporation velocity of small molecules on desorption was observed. The results showed that polyurethane is easy to absorb electrophilic and aromatic compounds. The more rapid its specific evaporation velocity is,the faster the small molecule is desorbed.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2000年第4期345-350,共6页
Acta Physico-Chimica Sinica
基金
国家自然科学基金资助项目
关键词
聚氨酯
吸附
解吸
超临界二氧化碳
小分子
Supercritical carbon dioxide,Polyurethane,Absorption, Effect
