y********d
发帖数: 327 | 1 书上看到一句话，关于PE的合成，不懂，哪位大大给释疑一下？
m Br [CH2]10-Br + 2m H2 ------> -[CH2-CH2]5m-
This is neither addition nor condensation polymerization.
为什么不是condensation 呢？ | g*******r
发帖数: 129 | 2 不是学化学的, 好象condensation应该有附产物, 如H2O. | y********d
发帖数: 327 | 3 我原来也这么想，后来觉得这个反应应该有HBr生成。Then I get confused ... | w**z
发帖数: 123 | 4 condensation usually requires mingling of two parts together,in addition to
the removal of a small molecule. in this case no of the other molecule (H2)
is integrated to the polymer structure.
However, I would probably call this "condensation" on a more general basis
because it just adds nothing to the polymer structure while extracting HBr. |
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