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Citation: Ye Shu-Ji, Chen Ming-Cai, Hu Hong-Qi, Guo Yuan-Qiang. Effects on the Absorption of Small Molecules into Polyurethane in Supercritical Carbon Dioxide[J]. Acta Physico-Chimica Sinica, ;2000, 16(04): 345-350. doi: 10.3866/PKU.WHXB20000410 shu

Effects on the Absorption of Small Molecules into Polyurethane in Supercritical Carbon Dioxide

1.
Guangzhou Institute of Chemistry,Academia Sinica,Guangzhou 510650

Received Date: 27 August 1999
Available Online: 15 April 2000

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.
- Supercritical carbon dioxide,
- Polyurethane,
- Absorption,
- Effect
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