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Acetone influence on glass transition of poly(methyl methacrylate) and polystyrene in compressed carbon dioxide

Jun He, Auteur ; Bo Wang, Auteur |

Dans Industrial & engineering chemistry research (Vol. 48 N° 10, Mai 2009)

In this work, the glass transitions of poly(methyl methacrylate) and polystyrene in compressed gaseous acetone/carbon dioxide were measured by an in situ creep compliance method at pressures lower than 7.0 MPa and at 318−338 K. When a small amou[...]

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Partition coefficients of methyl methacrylate and acetone between polymer and compressed carbon dioxide phases by an in situ infrared spectroscopy method

Jun He, Auteur ; Bo Wang, Auteur |

Dans Industrial & engineering chemistry research (Vol. 48 N° 15, Août 2009)

Partition coefficients of methyl methacrylate and acetone between some polymer and compressed gaseous carbon dioxide phases were determined by an in situ Fourier transform infrared (FTIR) spectroscopy method with a special designed high pressure[...]

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Response spectral characteristics and reliabilities of linear structures to both intensity and frequency content time-varying earthquake loads

Jun He, Auteur |

Dans Journal of structural engineering (Vol. 138 N° 12, Décembre 2012)

A numerical method for estimating the useful spectral characteristics of responses of classically damped linear elastic structures to the Yeh-Wen model of fully nonstationary random earthquake loads is developed. The derivation of the method is [...]

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The temperature, cosolvent, and blending effects on the partitions between polymer and compressed carbon dioxide

Jun He, Auteur ; Bo Wang, Auteur |

Dans Industrial & engineering chemistry research (Vol. 48 N° 15, Août 2009)

In this work, the temperature influence and blending effect on the partition of methyl methacrylate between poly(methyl methacrylate) and compressed gaseous carbon dioxide were investigated; the cosolvent effect of ethanol on the partition of ac[...]

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