膨胀计法测定苯乙烯本体聚合反应速率自动保存的.docx

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1、膨胀计法测定苯乙烯本体聚合反应速率七、实验数据记录时间（min）柱高（cm）△h△V/V1-△V/V1/(1-△V/V)ln1/(1-△V/V)026.150.000.001.001.000.0000524.641.510.030.971.030.02901021.904.250.080.921.090.08381519.756.400.120.881.140.12902017.708.450.160.841.190.17412515.7810.370.200.801.240.21823014.6611.4

2、90.220.781.280.24493513.1013.050.250.751.330.28334011.5114.640.280.721.380.32414510.8615.290.290.711.410.3412509.6216.530.310.691.450.3747558.5517.600.330.671.500.4046607.6518.500.350.651.540.4304八、计算示例以5min时的值为例进行计算ht=24.64cmV40=5.73—5.74mlA=17.66—17.68×1

3、0-3ml/cm[M]0=8.3769mol/l△V=V0-Vt=（h0-ht）AV0=V40-(40-h0)A=5.73-（40-26.15）×17.66×10-3=5.49ml（取两位小数）V=V0(1-d单/d聚)=5.49×（1-0.8712/1.050）=0.93ml△V/V=(26.15-24.64)×17.66×10-3/0.93=0.029Ln1/(1-△V/V)=0.0294(表格中数值均为通过计算机计算得到，中间过程值为准确值)其余时间的相应值按如上方法进行计算。做ln1/(1-△V/V

4、)—t的图，见第二页ln1/(1-△V/V)斜率0.0069