| 19 | The Effect of the Chain Length on MMA Free Radicl Polymerization显示文摘In the polymerization process of methyl methacrylate (MMA), the Arrhenius parameters (activation energy and frequency factor) of propagating reaction monotonically decrease with increasing monomer conversion. At the beginning and middle stage of the propagating reaction, the increase of radical chain length is the main reason of above mentioned change. And at the end stage, the sharp decrease of kp indicates that the activation energy is approximately incline to zero and the propagating reaction is controlled by molecular diffusion motion. | Wang, M Mao, YG Lu, YY Yang, RF Li, F Shen, JC | 2001 | Chinese Chemical Letters2001，12，11： | 0 |
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