Swelling of Nitrile Rubber by Selected Aromatics Blended in a Synthetic Jet Fuel

详细信息    查看全文

• 作者：John L. Graham ; Richard C. Striebich ; Kevin J. Myers ; Donald K. Minus ; and William E. Harrison III
• 刊名：Energy & Fuels
• 出版年：2006
• 出版时间：March 2006
• 年：2006
• 卷：20
• 期：2
• 页码：759 - 765
• 全文大小：126K
• 年卷期：v.20,no.2(March 2006)
• ISSN：1520-5029

文摘

To examine the contributions of different types of aromatics, the volume swell of nitrile rubber O-rings wasdetermined in aromatic-free synthetic JP-5 fuel and in synthetic JP-5 fuel blended with selected aromatics.Additionally, partition coefficients between the O-ring and fuel phases were measured for the fuel and aromaticspecies. Volume swell was measured using an in situ optical dilatometry technique that provided temporaldata, while partition coefficients were measured using direct thermal desorption GC-MS analysis of swollenO-ring samples. For the hydrocarbons studied, the data indicate a correlation between partition coefficient andvolume swell. The propensity to swell nitrile rubber was found to increase with the polarity and hydrogen-bonding character of the aromatics, suggesting that swelling of nitrile rubber requires disrupting the attractiveforces between cyano groups on adjacent polymer chains and replacing them with cyano group-aromaticinteractions. Volume swell was also found to decrease with increasing molecular weight.